Closes#5237
Generics/ModelViewset performs filtering on: list, retrieve, put, patch and destroy (plus method equivalents).
i.e. on list plus anything that calls `get_object`.
This PR makes schema generation follow that.
It adds `AutoSchema._allows_filters()` which can be overridden in subclasses.
I’ve made this initially “private” so we can make quick changes if needs be in a 3.7.1 etc.
The documentation generator calls view.get_serializer() in order to
inspect it for documentation generation. However, if get_serializer()
throws an APIException (e.g. PermissionDenied), it doesn't get caught at
the call site, but instead propagates up and aborts the entire view.
With the try/except in this commit, the documentation generator instead
gratiously ignores that particular view and moves on to the next one
instead. Practical concequences of this commit is that the docs no
longer break if any view's get_serializer(..) throws an APIException.
* Initial Refactor Step
* Add descriptor class
* call from generator
* proxy back to generator for implementation.
* Move `get_link` to descriptor
* Move `get_description` to descriptor
* Remove need for generator in get_description
* Move get_path_fields to descriptor
* Move `get_serializer_fields` to descriptor
* Move `get_pagination_fields` to descriptor
* Move `get_filter_fields` to descriptor
* Move `get_encoding` to descriptor.
* Pass just `url` from SchemaGenerator to descriptor
* Make `view` a property
Encapsulates check for a view instance.
* Adjust API Reference docs
* Add `ManualSchema` class
* Refactor to `ViewInspector` plus `AutoSchema`
The interface then is **just** `get_link()`
* Add `manual_fields` kwarg to AutoSchema
* Add schema decorator for FBVs
* Adjust comments
* Docs: Provide full params in example
Ref feedback b52e372f8f (r137254795)
* Add docstring for ViewInstpector.__get__ descriptor method.
Ref https://github.com/encode/django-rest-framework/pull/5354#discussion_r137265022
* Make `schemas` a package.
* Split generators, inspectors, views.
* Adjust imports
* Rename to EndpointEnumerator
* Adjust ManualSchema to take `fields`
… and `description`.
Allows `url` and `action` to remain dynamic
* Add package/module docstrings
