Django Polymorphic Method To Get Child Attribute. Django Forms Handling & Django Form Validation Master the Concept DataFlair By default, the non_polymorphic() method will be called on the queryset, so only the Parent model will be provided to the list template. Each subclassed model will require Django to perform an INNER JOIN to fetch the model fields from the database
Django Forms Handling & Django Form Validation Master the Concept DataFlair from data-flair.training
For large applications, get_child_models() can be used to query a plugin registration system So this method certainly has got it's shortcomings
Django Forms Handling & Django Form Validation Master the Concept DataFlair
With polymorphic models, you may query a base model, also known as the parent model, and get objects from the subclass, also known as the child model, that have all of their unique attributes and. PolymorphicModel declares one field for internal use (polymorphic_ctype) and provides a polymorphic. child_models should be set, or: get_child_models() should return a list with (Model, ModelAdmin) tuple
What is Polymorphism An Introduction with Examples in Java and Python Programmathically. Django polymorphic builds on top of standard django model inheritance, by adding extra column polymorphic_ctype which allows to identify subclass having only a parent object. It will provide you with a downcast() method on the model itself that will return your "child" object, as well as a special queryset class to deal with these problems!
Django ORM Relationships Cheat Sheet by Goga Patarkatsishvili Medium. Seamless Polymorphic Inheritance for Django Models That's what this library is designed for! The current release of django-polymorphic supports Django 2.2 - 4.0 on Python 3.6+.