November 2016
Beginner to intermediate
298 pages
6h 10m
English
Content preview from Odoo 10 Development Essentials
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Relationships between models
Looking again at our module design, we have these relationships:
- Each Task has a Stage. That's a many-to-one relationship, also known as a foreign key. The inverse is a one-to-many relationship, meaning that each Stage can have many Tasks.
- Each Task can have many Tags. That's a many-to-many relationship. The inverse relationship, of course, is also a many-to-many, since each Tag can be in many Tasks.
The following Entity Relationship Diagram can help visualizing the relationships we are about to create on the model. The lines ending with a triangle represent a many sides of the relationships:
Let's add the corresponding ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.