请求参数¶
以下是关于请求参数的参考信息。
这些是特殊的函数,您可以将其放在路径操作函数的参数中,或与 Annotated 一起使用在依赖函数中,以从请求中获取数据。
它包含:
Query()Path()Body()Cookie()Header()Form()File()
您可以直接从 fastapi 中导入它们。
from fastapi import Body, Cookie, File, Form, Header, Path, Query
fastapi.Query ¶
Query(
default=Undefined,
*,
default_factory=_Unset,
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。 在 FastAPI 关于查询参数的文档 中了解更多信息。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
alias
|
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。 在 FastAPI 关于查询参数的文档 中了解更多信息。
类型: |
description
|
人类可读的描述。 在 FastAPI 关于查询参数的文档 中了解更多信息。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
min_length
|
字符串的最小长度。 在 FastAPI 关于查询参数的文档 中了解更多信息。
类型: |
max_length
|
字符串的最大长度。 在 FastAPI 关于查询参数的文档 中了解更多信息。
类型: |
pattern
|
字符串的正则表达式模式。 在 [FastAPI 关于查询参数的文档](https://fastapi.org.cn/tutorial/query-params-str-validations/#add-regular-expressions) 中了解更多信息。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在 在 [FastAPI 关于查询参数的文档](https://fastapi.org.cn/tutorial/query-params-str-validations/#exclude-parameters-from-openapi) 中了解更多信息。
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Query( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#alternative-old-query-as-the-default-value)
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#alias-parameters)
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#declare-more-metadata)
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#declare-more-metadata)
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/)
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/)
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#add-regular-expressions
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#deprecating-parameters)
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
Read more about it in the
[FastAPI docs about Query parameters](https://fastapi.org.cn/tutorial/query-params-str-validations/#exclude-parameters-from-openapi
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.Query(
default=default,
default_factory=default_factory,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.Path ¶
Path(
default=...,
*,
default_factory=_Unset,
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
为路径操作声明一个路径参数。
在 FastAPI 关于路径参数和数值验证的文档 中了解更多信息。
from typing import Annotated
from fastapi import FastAPI, Path
app = FastAPI()
@app.get("/items/{item_id}")
async def read_items(
item_id: Annotated[int, Path(title="The ID of the item to get")],
):
return {"item_id": item_id}
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。 这不会影响
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。 在 FastAPI 关于路径参数和数值验证的文档 中了解更多信息。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。 在 FastAPI 关于路径参数数值验证的文档 中了解更多信息。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Path( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = ...,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
Read more about it in the
[FastAPI docs for Path Parameters and Numeric Validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#declare-metadata)
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
Read more about it in the
[FastAPI docs about Path parameters numeric validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/#number-validations-greater-than-and-less-than-or-equal)
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
"""
Declare a path parameter for a *path operation*.
Read more about it in the
[FastAPI docs for Path Parameters and Numeric Validations](https://fastapi.org.cn/tutorial/path-params-numeric-validations/).
```python
from typing import Annotated
from fastapi import FastAPI, Path
app = FastAPI()
@app.get("/items/{item_id}")
async def read_items(
item_id: Annotated[int, Path(title="The ID of the item to get")],
):
return {"item_id": item_id}
```
"""
return params.Path(
default=default,
default_factory=default_factory,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.Body ¶
Body(
default=Undefined,
*,
default_factory=_Unset,
embed=None,
media_type="application/json",
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
embed
|
当 当声明了多个 在 FastAPI 关于 Body - 多参数的文档 中了解更多信息。
类型: |
media_type
|
此参数字段的媒体类型。更改它会影响生成的 OpenAPI,但目前不会影响数据的解析。
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Body( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
embed: Annotated[
bool | None,
Doc(
"""
When `embed` is `True`, the parameter will be expected in a JSON body as a
key instead of being the JSON body itself.
This happens automatically when more than one `Body` parameter is declared.
Read more about it in the
[FastAPI docs for Body - Multiple Parameters](https://fastapi.org.cn/tutorial/body-multiple-params/#embed-a-single-body-parameter).
"""
),
] = None,
media_type: Annotated[
str,
Doc(
"""
The media type of this parameter field. Changing it would affect the
generated OpenAPI, but currently it doesn't affect the parsing of the data.
"""
),
] = "application/json",
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.Body(
default=default,
default_factory=default_factory,
embed=embed,
media_type=media_type,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.Cookie ¶
Cookie(
default=Undefined,
*,
default_factory=_Unset,
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Cookie( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.Cookie(
default=default,
default_factory=default_factory,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.Header ¶
Header(
default=Undefined,
*,
default_factory=_Unset,
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
convert_underscores=True,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
convert_underscores
|
自动将参数字段名称中的下划线转换为连字符。 在 FastAPI 关于请求头参数的文档 中了解更多信息。
类型: |
title
|
人类可读的标题。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Header( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
convert_underscores: Annotated[
bool,
Doc(
"""
Automatically convert underscores to hyphens in the parameter field name.
Read more about it in the
[FastAPI docs for Header Parameters](https://fastapi.org.cn/tutorial/header-params/#automatic-conversion)
"""
),
] = True,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.Header(
default=default,
default_factory=default_factory,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
convert_underscores=convert_underscores,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.Form ¶
Form(
default=Undefined,
*,
default_factory=_Unset,
media_type="application/x-www-form-urlencoded",
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
media_type
|
此参数字段的媒体类型。更改它会影响生成的 OpenAPI,但目前不会影响数据的解析。
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def Form( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
media_type: Annotated[
str,
Doc(
"""
The media type of this parameter field. Changing it would affect the
generated OpenAPI, but currently it doesn't affect the parsing of the data.
"""
),
] = "application/x-www-form-urlencoded",
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.Form(
default=default,
default_factory=default_factory,
media_type=media_type,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)
fastapi.File ¶
File(
default=Undefined,
*,
default_factory=_Unset,
media_type="multipart/form-data",
alias=None,
alias_priority=_Unset,
validation_alias=None,
serialization_alias=None,
title=None,
description=None,
gt=None,
ge=None,
lt=None,
le=None,
min_length=None,
max_length=None,
pattern=None,
regex=None,
discriminator=None,
strict=_Unset,
multiple_of=_Unset,
allow_inf_nan=_Unset,
max_digits=_Unset,
decimal_places=_Unset,
examples=None,
example=_Unset,
openapi_examples=None,
deprecated=None,
include_in_schema=True,
json_schema_extra=None,
**extra
)
| 参数 | 描述 |
|---|---|
default
|
如果未设置参数字段,则使用的默认值。
类型: |
default_factory
|
用于生成默认值的可调用对象(callable)。 这不会影响
类型: |
media_type
|
此参数字段的媒体类型。更改它会影响生成的 OpenAPI,但目前不会影响数据的解析。
类型: |
alias
|
参数字段的别名。 这将用于提取数据以及生成的 OpenAPI 中。当您因为 Python 保留关键字等原因无法使用想要的名称时,它特别有用。
类型: |
alias_priority
|
别名的优先级。这会影响是否使用别名生成器。
类型: |
validation_alias
|
“白名单”验证步骤。参数字段将是别名或定义的别名集中唯一允许的那个。
类型: |
serialization_alias
|
“黑名单”验证步骤。原始参数字段将是别名或别名集字段中的唯一一个,所有其他字段在序列化时将被忽略。
类型: |
title
|
人类可读的标题。
类型: |
description
|
人类可读的描述。
类型: |
gt
|
大于。如果设置,值必须大于此值。仅适用于数字。
类型: |
ge
|
大于或等于。如果设置,值必须大于或等于此值。仅适用于数字。
类型: |
lt
|
小于。如果设置,值必须小于此值。仅适用于数字。
类型: |
le
|
小于或等于。如果设置,值必须小于或等于此值。仅适用于数字。
类型: |
min_length
|
字符串的最小长度。
类型: |
max_length
|
字符串的最大长度。
类型: |
pattern
|
字符串的正则表达式模式。
类型: |
regex
|
在 FastAPI 0.100.0 和 Pydantic v2 中已弃用,请改用
类型: |
discriminator
|
用于在带标签的联合类型(tagged union)中区分类型的参数字段名称。
类型: |
strict
|
如果为
类型: |
multiple_of
|
值必须是此数字的倍数。仅适用于数字。
类型: |
allow_inf_nan
|
允许
类型: |
max_digits
|
十进制数值允许的最大位数。
类型: |
decimal_places
|
十进制数值允许的小数位数。
类型: |
examples
|
此字段的示例值。 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
example
|
在 OpenAPI 3.1.0 中已弃用(现已使用 JSON Schema 2020-12),尽管仍受支持。请改用 examples。
类型: |
openapi_examples
|
OpenAPI 特有的示例。 它将被添加到生成的 OpenAPI (例如在 Swagger UI(提供 在 FastAPI 关于声明请求示例数据的文档 中了解更多信息。
类型: |
deprecated
|
将此参数字段标记为已弃用。 它会影响生成的 OpenAPI(例如在
类型: |
include_in_schema
|
用于决定是否在生成的 OpenAPI 中包含此参数字段。您可能不需要它,但它是可用的。 这会影响生成的 OpenAPI (例如在
类型: |
json_schema_extra
|
任何额外的 JSON schema 数据。
类型: |
**extra
|
类型: |
源代码位于 fastapi/param_functions.py
def File( # noqa: N802
default: Annotated[
Any,
Doc(
"""
Default value if the parameter field is not set.
"""
),
] = Undefined,
*,
default_factory: Annotated[
Callable[[], Any] | None,
Doc(
"""
A callable to generate the default value.
This doesn't affect `Path` parameters as the value is always required.
The parameter is available only for compatibility.
"""
),
] = _Unset,
media_type: Annotated[
str,
Doc(
"""
The media type of this parameter field. Changing it would affect the
generated OpenAPI, but currently it doesn't affect the parsing of the data.
"""
),
] = "multipart/form-data",
alias: Annotated[
str | None,
Doc(
"""
An alternative name for the parameter field.
This will be used to extract the data and for the generated OpenAPI.
It is particularly useful when you can't use the name you want because it
is a Python reserved keyword or similar.
"""
),
] = None,
alias_priority: Annotated[
int | None,
Doc(
"""
Priority of the alias. This affects whether an alias generator is used.
"""
),
] = _Unset,
validation_alias: Annotated[
str | AliasPath | AliasChoices | None,
Doc(
"""
'Whitelist' validation step. The parameter field will be the single one
allowed by the alias or set of aliases defined.
"""
),
] = None,
serialization_alias: Annotated[
str | None,
Doc(
"""
'Blacklist' validation step. The vanilla parameter field will be the
single one of the alias' or set of aliases' fields and all the other
fields will be ignored at serialization time.
"""
),
] = None,
title: Annotated[
str | None,
Doc(
"""
Human-readable title.
"""
),
] = None,
description: Annotated[
str | None,
Doc(
"""
Human-readable description.
"""
),
] = None,
gt: Annotated[
float | None,
Doc(
"""
Greater than. If set, value must be greater than this. Only applicable to
numbers.
"""
),
] = None,
ge: Annotated[
float | None,
Doc(
"""
Greater than or equal. If set, value must be greater than or equal to
this. Only applicable to numbers.
"""
),
] = None,
lt: Annotated[
float | None,
Doc(
"""
Less than. If set, value must be less than this. Only applicable to numbers.
"""
),
] = None,
le: Annotated[
float | None,
Doc(
"""
Less than or equal. If set, value must be less than or equal to this.
Only applicable to numbers.
"""
),
] = None,
min_length: Annotated[
int | None,
Doc(
"""
Minimum length for strings.
"""
),
] = None,
max_length: Annotated[
int | None,
Doc(
"""
Maximum length for strings.
"""
),
] = None,
pattern: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
] = None,
regex: Annotated[
str | None,
Doc(
"""
RegEx pattern for strings.
"""
),
deprecated(
"Deprecated in FastAPI 0.100.0 and Pydantic v2, use `pattern` instead."
),
] = None,
discriminator: Annotated[
str | None,
Doc(
"""
Parameter field name for discriminating the type in a tagged union.
"""
),
] = None,
strict: Annotated[
bool | None,
Doc(
"""
If `True`, strict validation is applied to the field.
"""
),
] = _Unset,
multiple_of: Annotated[
float | None,
Doc(
"""
Value must be a multiple of this. Only applicable to numbers.
"""
),
] = _Unset,
allow_inf_nan: Annotated[
bool | None,
Doc(
"""
Allow `inf`, `-inf`, `nan`. Only applicable to numbers.
"""
),
] = _Unset,
max_digits: Annotated[
int | None,
Doc(
"""
Maximum number of digits allowed for decimal values.
"""
),
] = _Unset,
decimal_places: Annotated[
int | None,
Doc(
"""
Maximum number of decimal places allowed for decimal values.
"""
),
] = _Unset,
examples: Annotated[
list[Any] | None,
Doc(
"""
Example values for this field.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/)
"""
),
] = None,
example: Annotated[
Any | None,
deprecated(
"Deprecated in OpenAPI 3.1.0 that now uses JSON Schema 2020-12, "
"although still supported. Use examples instead."
),
] = _Unset,
openapi_examples: Annotated[
dict[str, Example] | None,
Doc(
"""
OpenAPI-specific examples.
It will be added to the generated OpenAPI (e.g. visible at `/docs`).
Swagger UI (that provides the `/docs` interface) has better support for the
OpenAPI-specific examples than the JSON Schema `examples`, that's the main
use case for this.
Read more about it in the
[FastAPI docs for Declare Request Example Data](https://fastapi.org.cn/tutorial/schema-extra-example/#using-the-openapi_examples-parameter).
"""
),
] = None,
deprecated: Annotated[
deprecated | str | bool | None,
Doc(
"""
Mark this parameter field as deprecated.
It will affect the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = None,
include_in_schema: Annotated[
bool,
Doc(
"""
To include (or not) this parameter field in the generated OpenAPI.
You probably don't need it, but it's available.
This affects the generated OpenAPI (e.g. visible at `/docs`).
"""
),
] = True,
json_schema_extra: Annotated[
dict[str, Any] | None,
Doc(
"""
Any additional JSON schema data.
"""
),
] = None,
**extra: Annotated[
Any,
Doc(
"""
Include extra fields used by the JSON Schema.
"""
),
deprecated(
"""
The `extra` kwargs is deprecated. Use `json_schema_extra` instead.
"""
),
],
) -> Any:
return params.File(
default=default,
default_factory=default_factory,
media_type=media_type,
alias=alias,
alias_priority=alias_priority,
validation_alias=validation_alias,
serialization_alias=serialization_alias,
title=title,
description=description,
gt=gt,
ge=ge,
lt=lt,
le=le,
min_length=min_length,
max_length=max_length,
pattern=pattern,
regex=regex,
discriminator=discriminator,
strict=strict,
multiple_of=multiple_of,
allow_inf_nan=allow_inf_nan,
max_digits=max_digits,
decimal_places=decimal_places,
example=example,
examples=examples,
openapi_examples=openapi_examples,
deprecated=deprecated,
include_in_schema=include_in_schema,
json_schema_extra=json_schema_extra,
**extra,
)