Copy model definition using inheritance

We have seen class inheritance (extension) in the previous recipe. Now we will see prototype inheritance, which is used to copy the entire definition of the existing model. In this recipe, we will make a copy of the library.book model.

Getting ready

We will continue using the my_library add-on module from the previous recipe.

How to do it...

Prototype inheritance is executed by using the _name and _inherit class attributes at the same time. Perform the following steps to generate a copy of the library.book model:

1. Add new file called library_book_copy.py to the /my_library/models/ directory.
2. Add the following content to the in library_book_copy.py file:

   from odoo import models, fields, api
   class LibraryBookCopy(models.Model):
       _name = "library.book.copy"
       _inherit = "library.book"
       _description = "Library Book's Copy"

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