Source code for scrapy.http.request.json_request

"""
This module implements the JsonRequest class which is a more convenient class
(than Request) to generate JSON Requests.

See documentation in docs/topics/request-response.rst
"""

import copy
import json
import warnings

from scrapy.http.request import Request
from scrapy.utils.deprecate import create_deprecated_class


[docs]class JsonRequest(Request): def __init__(self, *args, **kwargs): dumps_kwargs = copy.deepcopy(kwargs.pop('dumps_kwargs', {})) dumps_kwargs.setdefault('sort_keys', True) self._dumps_kwargs = dumps_kwargs body_passed = kwargs.get('body', None) is not None data = kwargs.pop('data', None) data_passed = data is not None if body_passed and data_passed: warnings.warn('Both body and data passed. data will be ignored') elif not body_passed and data_passed: kwargs['body'] = self._dumps(data) if 'method' not in kwargs: kwargs['method'] = 'POST' super(JsonRequest, self).__init__(*args, **kwargs) self.headers.setdefault('Content-Type', 'application/json') self.headers.setdefault('Accept', 'application/json, text/javascript, */*; q=0.01') def replace(self, *args, **kwargs): body_passed = kwargs.get('body', None) is not None data = kwargs.pop('data', None) data_passed = data is not None if body_passed and data_passed: warnings.warn('Both body and data passed. data will be ignored') elif not body_passed and data_passed: kwargs['body'] = self._dumps(data) return super(JsonRequest, self).replace(*args, **kwargs) def _dumps(self, data): """Convert to JSON """ return json.dumps(data, **self._dumps_kwargs)
JSONRequest = create_deprecated_class("JSONRequest", JsonRequest)