Method from_response

scrapy/http/request/form.py:74–102

(
        cls,
        response: TextResponse,
        formname: str | None = None,
        formid: str | None = None,
        formnumber: int = 0,
        formdata: FormdataType = None,
        clickdata: dict[str, str | int] | None = None,
        dont_click: bool = False,
        formxpath: str | None = None,
        formcss: str | None = None,
        **kwargs: Any,
    )

    @classmethod
    def from_response(
        cls,
        response: TextResponse,
        formname: str | None = None,
        formid: str | None = None,
        formnumber: int = 0,
        formdata: FormdataType = None,
        clickdata: dict[str, str | int] | None = None,
        dont_click: bool = False,
        formxpath: str | None = None,
        formcss: str | None = None,
        **kwargs: Any,
    ) -> Self:
        kwargs.setdefault("encoding", response.encoding)

        if formcss is not None:
            formxpath = HTMLTranslator().css_to_xpath(formcss)

        form = _get_form(response, formname, formid, formnumber, formxpath)
        formdata = _get_inputs(form, formdata, dont_click, clickdata)
        url = _get_form_url(form, kwargs.pop("url", None))

        method = kwargs.pop("method", form.method)
        if method is not None:
            method = method.upper()
            if method not in cls.valid_form_methods:
                method = "GET"

        return cls(url=url, method=method, formdata=formdata, **kwargs)


def _get_form_url(form: FormElement, url: str | None) -> str: