December 2018
Beginner to intermediate
404 pages
10h 14m
English
Content preview from Odoo 12 Development Essentials - Fourth Edition
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Transient and abstract models
In the preceding code, and in most Odoo models, classes are based on the models.Model class. These types of model have permanent database persistence: database tables are created for them and their records are stored until explicitly deleted.
However, Odoo also provides two other model types to be used: transient and abstract models.
Transient models are based on the models.TransientModel class and are used for wizard-style user interaction. Their data is still stored in the database, but it is expected to be temporary. A vacuum job periodically clears old data from these tables. For example, the Load a Language dialog window, found in the Settings | Translations menu, uses a Transient model to store user selections ...
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