django-orchestra/orchestra/api/options.py

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from django.conf import settings as django_settings
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from django.core.exceptions import ImproperlyConfigured
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from django.utils.module_loading import autodiscover_modules
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from rest_framework.routers import DefaultRouter, Route, flatten, replace_methodname
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from orchestra import settings
from orchestra.utils.python import import_class
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from .helpers import insert_links, replace_collectionmethodname
class LinkHeaderRouter(DefaultRouter):
def get_api_root_view(self):
""" returns the root view, with all the linked collections """
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APIRoot = import_class(settings.API_ROOT_VIEW)
APIRoot.router = self
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return APIRoot.as_view()
def register(self, prefix, viewset, base_name=None):
""" inserts link headers on every viewset """
if base_name is None:
base_name = self.get_default_base_name(viewset)
insert_links(viewset, base_name)
self.registry.append((prefix, viewset, base_name))
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def get_viewset(self, prefix_or_model):
for _prefix, viewset, __ in self.registry:
if _prefix == prefix_or_model or viewset.model == prefix_or_model:
return viewset
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msg = "%s does not have a regiestered viewset" % prefix_or_model
raise KeyError(msg)
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def insert(self, prefix_or_model, name, field, **kwargs):
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""" Dynamically add new fields to an existing serializer """
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viewset = self.get_viewset(prefix_or_model)
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# setattr(viewset, 'inserted', getattr(viewset, 'inserted', []))
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if viewset.serializer_class is None:
viewset.serializer_class = viewset().get_serializer_class()
viewset.serializer_class.base_fields.update({name: field(**kwargs)})
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# if not name in viewset.inserted:
viewset.serializer_class.Meta.fields += (name,)
# viewset.inserted.append(name)
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# Create a router and register our viewsets with it.
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router = LinkHeaderRouter(trailing_slash=django_settings.APPEND_SLASH)
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autodiscover = lambda: (autodiscover_modules('api'), autodiscover_modules('serializers'))