December 2018
Beginner to intermediate
404 pages
10h 14m
English
Content preview from Odoo 12 Development Essentials - Fourth Edition
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Selecting extension points with XPath
In some cases, we may not have an attribute with a unique value to use as the XML node selector. This can happen when the element to select does not have a name attribute, as is the case for the <group>, <notebook>, or <page> View elements. Another frequent case is when there are several elements with the same name attribute, as in the case of Kanban QWeb Views, where the same field can be included more than once in the same XML template.
For these cases, we need a more sophisticated way to locate the XML element to extend. Being XML, the natural way to locate elements in XML is to use XPath expressions.
For example, taking the Book form View defined in the previous chapter, an XPath expression to locate ...
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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.