September 2018
Beginner to intermediate
218 pages
4h 27m
English
Content preview from Magento 2 Development Quick Start Guide
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The around plugin
The around plugin runs around the observed method in a way that allows us to run some code before and after the original method call. This is a very powerful concept, as we get to change the incoming parameters as well as the return value of a function.
When writing the around plugin, there are a few key points to remember:
- The first parameter coming into the plugin is the observed type instance.
- The second parameter coming into the plugin is a callable/Closure. Usually, this parameter is typed and named as callable $proceed. We must make sure to forward the same parameters to this callable as the original method signature.
- All other parameters are parameters of the original observed method.
- The plugin must return the same ...
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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.