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- """
- 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
- 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)
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