mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-11 04:07:39 +03:00
58 lines
2.8 KiB
Python
58 lines
2.8 KiB
Python
"""Mixin classes that provide a determine_content(request) method to return the content type and content of a request.
|
|
We use this more generic behaviour to allow for overloaded content in POST forms.
|
|
"""
|
|
|
|
class ContentMixin(object):
|
|
"""Base class for all ContentMixin classes, which simply defines the interface they provide."""
|
|
|
|
def determine_content(self, request):
|
|
"""If the request contains content return a tuple of (content_type, content) otherwise return None.
|
|
Note that content_type may be None if it is unset.
|
|
Must be overridden to be implemented."""
|
|
raise NotImplementedError()
|
|
|
|
|
|
class StandardContentMixin(ContentMixin):
|
|
"""Standard HTTP request content behaviour.
|
|
See RFC 2616 sec 4.3 - http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.3"""
|
|
|
|
def determine_content(self, request):
|
|
"""If the request contains content return a tuple of (content_type, content) otherwise return None.
|
|
Note that content_type may be None if it is unset."""
|
|
|
|
if not request.META.get('CONTENT_LENGTH', None) and not request.META.get('TRANSFER_ENCODING', None):
|
|
return None
|
|
return (request.META.get('CONTENT_TYPE', None), request.raw_post_data)
|
|
|
|
|
|
class OverloadedContentMixin(ContentMixin):
|
|
"""HTTP request content behaviour that also allows arbitrary content to be tunneled in form data."""
|
|
|
|
"""The name to use for the content override field in the POST form.
|
|
Set this to *None* to desactivate content overloading."""
|
|
CONTENT_PARAM = '_content'
|
|
|
|
"""The name to use for the content-type override field in the POST form.
|
|
Taken into account only if content overloading is activated."""
|
|
CONTENTTYPE_PARAM = '_contenttype'
|
|
|
|
def determine_content(self, request):
|
|
"""If the request contains content, returns a tuple of (content_type, content) otherwise returns None.
|
|
Note that content_type may be None if it is unset."""
|
|
if not request.META.get('CONTENT_LENGTH', None) and not request.META.get('TRANSFER_ENCODING', None):
|
|
return None
|
|
content_type = request.META.get('CONTENT_TYPE', None)
|
|
|
|
if (request.method == 'POST' and self.CONTENT_PARAM and
|
|
request.POST.get(self.CONTENT_PARAM, None) is not None):
|
|
|
|
# Set content type if form contains a non-empty CONTENTTYPE_PARAM field
|
|
content_type = None
|
|
if self.CONTENTTYPE_PARAM and request.POST.get(self.CONTENTTYPE_PARAM, None):
|
|
content_type = request.POST.get(self.CONTENTTYPE_PARAM, None)
|
|
request.META['CONTENT_TYPE'] = content_type # TODO : VERY BAD, avoid modifying original request.
|
|
|
|
return (content_type, request.POST[self.CONTENT_PARAM])
|
|
else:
|
|
return (content_type, request.raw_post_data)
|