Fix bug with related

[treyhunner]

Before I made this fix, I experienced this error when starting my app:

  File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 590, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 608, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1198, in add_q
    clause = self._add_q(where_part, used_aliases)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1234, in _add_q
    current_negated=current_negated)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1100, in build_filter
    allow_explicit_fk=True)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1357, in setup_joins
    names, opts, allow_many, allow_explicit_fk)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1265, in names_to_path
    field, model, direct, m2m = opts.get_field_by_name(name)
  File "/usr/local/lib/python2.7/site-packages/django/db/models/options.py", line 373, in get_field_by_name
    cache = self.init_name_map()
  File "/usr/local/lib/python2.7/site-packages/django/db/models/options.py", line 404, in init_name_map
    for f, model in self.get_all_related_objects_with_model():
  File "/usr/local/lib/python2.7/site-packages/django/db/models/options.py", line 466, in get_all_related_objects_with_model
    self._fill_related_objects_cache()
  File "/usr/local/lib/python2.7/site-packages/django/db/models/options.py", line 494, in _fill_related_objects_cache
    cache[f.related] = None
AttributeError: 'CustomForeignKey' object has no attribute 'related'

[macro1]

I can't seem to reproduce it... Seems fairly sane though. I think it will be unnecessary in 1.7.

[treyhunner]

👍 the new changes look fine to me. I think it's ready to be merged.