## Description
The `choices` field for the `ChoiceField` class should be able to be edited after `ChoiceField.__init__` is called.
```
field = ChoiceField(choices=[1,2])
field.choices = [1] # Should no longer allow `2` as a choice
```
Currently, you must update `choices`, `grouped_choices`, and `choice_strings_to_values` to achieve this. This P/R keeps `grouped_choices` and `choice_strings_to_values` in sync whenever the `choices` are edited.
* Add regression test for #2505. Thanks @pySilver!
* Add regression test for #5087
* Revert "Cached the field's root and context property."
This reverts commit 792005806b.
Python Reference:
distutils.util.strtobool(val)
Convert a string representation of truth to true (1) or false (0).
True values are y, yes, t, true, on and 1; false values are n, no, f, false, off and 0. Raises ValueError if val is anything else.
* Start test case
* Added 'requests' test client
* Address typos
* Graceful fallback if requests is not installed.
* Add cookie support
* Tests for auth and CSRF
* Py3 compat
* py3 compat
* py3 compat
* Add get_requests_client
* Added SchemaGenerator.should_include_link
* add settings for html cutoff on related fields
* Router doesn't work if prefix is blank, though project urls.py handles prefix
* Fix Django 1.10 to-many deprecation
* Add django.core.urlresolvers compatibility
* Update django-filter & django-guardian
* Check for empty router prefix; adjust URL accordingly
It's easiest to fix this issue after we have made the regex. To try
to fix it before would require doing something different for List vs
Detail, which means we'd have to know which type of url we're
constructing before acting accordingly.
* Fix misc django deprecations
* Use TOC extension instead of header
* Fix deprecations for py3k
* Add py3k compatibility to is_simple_callable
* Add is_simple_callable tests
* Drop python 3.2 support (EOL, Dropped by Django)
* schema_renderers= should *set* the renderers, not append to them.
* API client (#4424)
* Fix release notes
* Add note about 'User account is disabled.' vs 'Unable to log in'
* Clean up schema generation (#4527)
* Handle multiple methods on custom action (#4529)
* RequestsClient, CoreAPIClient
* exclude_from_schema
* Added 'get_schema_view()' shortcut
* Added schema descriptions
* Better descriptions for schemas
* Add type annotation to schema generation
* Coerce schema 'pk' in path to actual field name
* Deprecations move into assertion errors
* Use get_schema_view in tests
* Updte CoreJSON media type
* Handle schema structure correctly when path prefixs exist. Closes#4401
* Add PendingDeprecation to Router schema generation.
* Added SCHEMA_COERCE_PATH_PK and SCHEMA_COERCE_METHOD_NAMES
* Renamed and documented 'get_schema_fields' interface.
* Add Meta.fields = '__all__' to serializer classes where required.
* Add explicit on_delete=models.CASCADE to ForeignKey fields.
* Use '.remote_field' and '.model' in preference to '.rel' and '.to' when inspecting model fields.
* Use new value_from_object in preference to internal _get_val_from_obj
