django/bin/validate.py

   1 from django.core import meta
   2
   3 def validate_app(app_label):
   4     mod = meta.get_app(app_label)
   5     for klass in mod._MODELS:
   6         try:
   7             validate_class(klass)
   8         except AssertionError, e:
   9             print e
  10
  11 def validate_class(klass):
  12     opts = klass._meta
  13     # Fields.
  14     for f in opts.fields:
  15         if isinstance(f, meta.ManyToManyField):
  16             assert isinstance(f.rel, meta.ManyToMany), \
  17                 "ManyToManyField %s should have 'rel' set to a ManyToMany instance." % f.name
  18     # Inline related objects.
  19     for related in opts.get_followed_related_objects():
  20         assert len([f for f in related.opts.fields if f.core]) > 0, \
  21             "At least one field in %s should have core=True, because it's being edited inline by %s." % \
  22             (related.opts.object_name, opts.object_name)
  23     # All related objects.
  24     related_apps_seen = []
  25     for related in opts.get_all_related_objects():
  26         if related.opts in related_apps_seen:
  27             assert related.field.rel.related_name is not None, \
  28                 "Relationship in field %s.%s needs to set 'related_name' because more than one" \
  29                 " %s object is referenced in %s." % \
  30                 (related.opts.object_name, related.field.name, opts.object_name, rel_opts.object_name)
  31         related_apps_seen.append(related.opts)
  32     # Etc.
  33     if opts.admin is not None:
  34         assert opts.admin.ordering or opts.ordering, \
  35             "%s needs to set 'ordering' on either its 'admin' or its model," \
  36             " because it has 'admin' set." % opts.object_name
  37
  38 if __name__ == "__main__":
  39     import sys
  40     try:
  41         validate_app(sys.argv[1])
  42     except IndexError:
  43         sys.stderr.write("Usage: %s [appname]\n" % __file__)
  44         sys.exit(1)