46 lines
1.9 KiB
Python
46 lines
1.9 KiB
Python
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from django.urls import NoReverseMatch
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from rest_framework.reverse import reverse
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def link_wrap(view, view_names):
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def wrapper(self, request, *args, **kwargs):
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""" wrapper function that inserts HTTP links on view """
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links = []
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for name in view_names:
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try:
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url = reverse(name, request=self.request)
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except NoReverseMatch:
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url = reverse(name, args, kwargs, request=request)
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links.append('<%s>; rel="%s"' % (url, name))
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response = view(self, request, *args, **kwargs)
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response['Link'] = ', '.join(links)
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return response
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for attr in dir(view):
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try:
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setattr(wrapper, attr, getattr(view, attr))
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except:
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pass
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return wrapper
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def insert_links(viewset, basename):
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collection_links = ['api-root', '%s-list' % basename]
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object_links = ['api-root', '%s-list' % basename, '%s-detail' % basename]
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exception_links = ['api-root']
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list_links = ['api-root']
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retrieve_links = ['api-root', '%s-list' % basename]
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# Determine any `@action` or `@link` decorated methods on the viewset
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for methodname in dir(viewset):
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method = getattr(viewset, methodname)
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view_name = '%s-%s' % (basename, methodname.replace('_', '-'))
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if hasattr(method, 'collection_bind_to_methods'):
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list_links.append(view_name)
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retrieve_links.append(view_name)
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setattr(viewset, methodname, link_wrap(method, collection_links))
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elif hasattr(method, 'bind_to_methods'):
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retrieve_links.append(view_name)
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setattr(viewset, methodname, link_wrap(method, object_links))
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viewset.handle_exception = link_wrap(viewset.handle_exception, exception_links)
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viewset.list = link_wrap(viewset.list, list_links)
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viewset.retrieve = link_wrap(viewset.retrieve, retrieve_links)
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