May 2016
Beginner to intermediate
388 pages
9h 18m
English
Content preview from Learning Pentaho CTools
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Using preChange and postChange
Now it's time to cover preChange and postChange. These two functions will only be available in components whose main purpose is to be used as filters. Examples of this are select, input, date range, radio button, button, multi button, and so on.
Every component where we can set a parameter to store the selections and the lifecycle of the component will trigger fireChange to that parameter. We have the option to specify the function that will be executed both before this happens and after applying the changes to the parameter, preChange and postChange. Take a look at following image:
As you can figure out, that the first ...
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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.