Django Add A related_name argument to the Definit

Here's a one-to-many relationship model

Class Cats (models. Model):

#...

Catnum = models. Integerfield (Unique=true)

#...

Class Items (models. Model):

CATID = models. ForeignKey (Cats, to_field= ' catnum ', db_column= ' catid ')

#...

Unhandled exception in thread started by

Traceback (most recent):

File "c:\python27\lib\site-packages\django\core\management\commands\runserver.py", line +, in Inner_run

Self.validate (Display_num_errors=true)

File "c:\python27\lib\site-packages\django\core\management\base.py", line 253, in validate

Raise CommandError ("one or more models do not validate:\n%s"% error_text)

Django.core.management.base.CommandError:One or more models do not validate:

Beauty.items:Reverse Query name for field ' CATID ' clashes with field ' Cats.items '. Add a related_name argument to the Definit

Ion for ' catid '.

The error that occurred probably meant to add a related_name parameter, so the items model was changed to

Class Items (models. Model):

CATID = models. ForeignKey (Cats, to_field= ' catnum ', db_column= ' catid ', related_name= ' catid ')

#...

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