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
25154	Migration errors don't contain enough information to debug properly	Brandon Moser	nobody	"After creating a migration, via `makemigrations`, I attempted to run `sqlmigrate`, but received the following error. I have 3 migrations using the object referenced. It would be helpful to add the exact migration operation in the traceback. I think the migration traceback should, also, show the model/table and column that is part of the error.

{{{
Traceback (most recent call last):
  File ""manage.py"", line 11, in <module>
    execute_from_command_line(sys.argv)
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py"", line 385, in execute_from_command_line
    utility.execute()
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py"", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/base.py"", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/commands/sqlmigrate.py"", line 30, in execute
    return super(Command, self).execute(*args, **options)
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/base.py"", line 338, in execute
    output = self.handle(*args, **options)
  File ""/usr/local/lib/python2.7/dist-packages/django/core/management/commands/sqlmigrate.py"", line 61, in handle
    sql_statements = executor.collect_sql(plan)
  File ""/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py"", line 82, in collect_sql
    migration.apply(project_state, schema_editor, collect_sql=True)
  File ""/usr/local/lib/python2.7/dist-packages/django/db/migrations/migration.py"", line 108, in apply
    operation.database_forwards(self.app_label, schema_editor, project_state, new_state)
  File ""/usr/local/lib/python2.7/dist-packages/django/db/migrations/operations/fields.py"", line 139, in database_forwards
    schema_editor.alter_field(from_model, from_field, to_field)
  File ""/usr/local/lib/python2.7/dist-packages/django/db/backends/schema.py"", line 460, in alter_field
    return self._alter_many_to_many(model, old_field, new_field, strict)
  File ""/usr/local/lib/python2.7/dist-packages/django/db/backends/schema.py"", line 764, in _alter_many_to_many
    new_field.rel.through._meta.get_field_by_name(new_field.m2m_reverse_field_name())[0],
  File ""/usr/local/lib/python2.7/dist-packages/django/utils/functional.py"", line 17, in _curried
    return _curried_func(*(args + moreargs), **dict(kwargs, **morekwargs))
  File ""/usr/local/lib/python2.7/dist-packages/django/db/models/fields/related.py"", line 2224, in _get_m2m_reverse_attr
    return getattr(self, cache_attr)
AttributeError: 'VersionedManyToManyField' object has no attribute '_m2m_reverse_name_cache'
}}}

'''Note''': I have posted this error to the CleanerVersion team due to the exact error.
"	New feature	new	Migrations	1.7	Normal				Unreviewed	0	0	0	0	0	0