December 2018
Beginner to intermediate
404 pages
10h 14m
English
Content preview from Odoo 12 Development Essentials - Fourth Edition
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Extending Python methods
The business logic that's coded into Python methods can also be extended. For this, Odoo borrows the mechanism that Python already provides for inherited objects to extend their parent class behavior.
As a practical example, we will extend the Library Book ISBN validation logic. The logic provided by the base Library app only validates modern 13-digit ISBNs, but some older titles might have a 10-digit ISBN. We will extend the _check_isbn() method to also validate these cases.
Add this additional method in the library_member/models/library_book.py file:
from odoo import api, fields, modelsclass Book(models.Model): _inherit = 'library.book' is_available = fields.Boolean('Is Available?', readonly=False) @api.multi def ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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