id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
22526	New check method on models not documented in release notes	Kevin Brown	nobody	"Django 1.7 adds a new `check` command for models that is called on the class.  As far as I can tell, this is only mentioned (briefly) in the documentation for the check framework.

https://docs.djangoproject.com/en/1.7/topics/checks/#field-model-and-manager-checks

If users create a model that has a method `check`, calling `manage.py check` will fail (because of the conflicting method names).

{{{
Traceback (most recent call last):
  File ""manage.py"", line 12, in <module>
    execute_from_command_line(sys.argv)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/__init__.py"", line 427, in execute_from_command_line
    utility.execute()
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/__init__.py"", line 419, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/base.py"", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/base.py"", line 337, in execute
    output = self.handle(*args, **options)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/commands/check.py"", line 39, in handle
    self.check(app_configs=app_configs, tags=tags, display_num_errors=True)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/management/base.py"", line 370, in check
    all_issues = checks.run_checks(app_configs=app_configs, tags=tags)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/checks/registry.py"", line 59, in run_checks
    new_errors = check(app_configs=app_configs)
  File ""/home/<>/.virtualenvs/<>/local/lib/python2.7/site-packages/django/core/checks/model_checks.py"", line 16, in check_all_models
    if app_configs is None or model._meta.app_config in app_configs]
TypeError: unbound method check() must be called with [model name] instance as first argument (got nothing instead)
}}}

This is not mentioned in the release notes for Django 1.7 at all and worked fine in previous versions:

https://docs.djangoproject.com/en/1.7/releases/1.7/"	Cleanup/optimization	closed	Documentation	1.7-beta-2	Release blocker	fixed			Ready for checkin	1	0	0	0	0	0