Custom model field data type

[Berry]

I created a custom PositiveBigIntegerField data type in models.py, which is a sub class of the BigIntegerField. I registered the model where the PositiveBigIntegerField is used in the admin site. When I try to add een item using the admin site, the 'add' button raises an error, telling me PositiveBigIntegerField is not defined.

Exception Type: NameError

Exception Value: name 'BigIntegerField' is not defined

Where and how do I import the custom data type, so it is defined in de admin site

[JAGADESH M]

if you read this page you will get an idea. get the link below

https://stackoverflow.com/questions/20754793/django-module-object-has-no-attribute-bigintegerfield

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