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from django.core import meta
def validate_app(app_label):
mod = meta.get_app(app_label)
for klass in mod._MODELS:
try:
validate_class(klass)
except AssertionError, e:
print e
def validate_class(klass):
opts = klass._meta
# Fields.
for f in opts.fields:
if isinstance(f, meta.ManyToManyField):
assert isinstance(f.rel, meta.ManyToMany), \
"ManyToManyField %s should have 'rel' set to a ManyToMany instance." % f.name
# Inline related objects.
for related in opts.get_followed_related_objects():
assert len([f for f in related.opts.fields if f.core]) > 0, \
"At least one field in %s should have core=True, because it's being edited inline by %s." % \
(related.opts.object_name, opts.object_name)
# All related objects.
related_apps_seen = []
for related in opts.get_all_related_objects():
if related.opts in related_apps_seen:
assert related.field.rel.related_name is not None, \
"Relationship in field %s.%s needs to set 'related_name' because more than one" \
" %s object is referenced in %s." % \
(related.opts.object_name, related.field.name, opts.object_name, rel_opts.object_name)
related_apps_seen.append(related.opts)
# Etc.
if opts.admin is not None:
assert opts.admin.ordering or opts.ordering, \
"%s needs to set 'ordering' on either its 'admin' or its model," \
" because it has 'admin' set." % opts.object_name
if __name__ == "__main__":
import sys
try:
validate_app(sys.argv[1])
except IndexError:
sys.stderr.write("Usage: %s [appname]\n" % __file__)
sys.exit(1)
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