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Improve error message for bad FK resolution

This commit is contained in:
Andrew Godwin 2013-05-09 14:04:07 +01:00
parent 6e21a59402
commit ade34c44da
1 changed files with 2 additions and 0 deletions
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2
django/db/models/fields/related.py
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@ -958,6 +958,8 @@ class ForeignObject(RelatedField):
def resolve_related_fields(self): def resolve_related_fields(self):
if len(self.from_fields) < 1 or len(self.from_fields) != len(self.to_fields): if len(self.from_fields) < 1 or len(self.from_fields) != len(self.to_fields):
raise ValueError('Foreign Object from and to fields must be the same non-zero length') raise ValueError('Foreign Object from and to fields must be the same non-zero length')
if isinstance(self.rel.to, basestring):
raise ValueError('Related model %r cannot been resolved' % self.rel.to)
related_fields = [] related_fields = []
for index in range(len(self.from_fields)): for index in range(len(self.from_fields)):
from_field_name = self.from_fields[index] from_field_name = self.from_fields[index]