mirror of https://github.com/scrapy/scrapy.git
77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
from __future__ import annotations
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import copy
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import json
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import warnings
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from typing import TYPE_CHECKING, Any, overload
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from scrapy.http.request import Request, RequestTypeVar
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if TYPE_CHECKING:
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# typing.Self requires Python 3.11
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from typing_extensions import Self
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class JsonRequest(Request):
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__slots__ = ("_dumps_kwargs",)
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attributes: tuple[str, ...] = (*Request.attributes, "dumps_kwargs")
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def __init__(
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self, *args: Any, dumps_kwargs: dict[str, Any] | None = None, **kwargs: Any
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) -> None:
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dumps_kwargs = copy.deepcopy(dumps_kwargs) if dumps_kwargs is not None else {}
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dumps_kwargs.setdefault("sort_keys", True)
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self._dumps_kwargs: dict[str, Any] = dumps_kwargs
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body_passed = kwargs.get("body") is not None
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data: Any = kwargs.pop("data", None)
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data_passed: bool = data is not None
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if body_passed and data_passed:
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warnings.warn(
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"Both body and data passed. data will be ignored", stacklevel=2
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)
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elif not body_passed and data_passed:
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kwargs["body"] = self._dumps(data)
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if "method" not in kwargs:
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kwargs["method"] = "POST"
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super().__init__(*args, **kwargs)
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self.headers.setdefault("Content-Type", "application/json")
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self.headers.setdefault(
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"Accept", "application/json, text/javascript, */*; q=0.01"
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)
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@property
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def dumps_kwargs(self) -> dict[str, Any]:
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return self._dumps_kwargs
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@overload
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def replace(
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self, *args: Any, cls: type[RequestTypeVar], **kwargs: Any
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) -> RequestTypeVar: ...
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@overload
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def replace(self, *args: Any, cls: None = None, **kwargs: Any) -> Self: ...
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def replace(
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self, *args: Any, cls: type[Request] | None = None, **kwargs: Any
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) -> Request:
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body_passed = kwargs.get("body") is not None
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data: Any = kwargs.pop("data", None)
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data_passed: bool = data is not None
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if body_passed and data_passed:
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warnings.warn(
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"Both body and data passed. data will be ignored", stacklevel=2
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)
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elif not body_passed and data_passed:
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kwargs["body"] = self._dumps(data)
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return super().replace(*args, cls=cls, **kwargs)
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def _dumps(self, data: Any) -> str:
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"""Convert to JSON"""
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return json.dumps(data, **self._dumps_kwargs)
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