November 2017
Intermediate to advanced
496 pages
12h 50m
English
Content preview from Agile Web Development with Rails 5.1
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We cover:
- Performing validation and error reporting
- Unit testing
Chapter 7Task B: Validation and Unit Testing
At this point, we have an initial model for a product, as well as a complete maintenance application for this data provided for us by Rails scaffolding. In this chapter, we’re going to focus on making the model more bulletproof—as in, making sure that errors in the data provided never get committed to the database—before we proceed to other aspects of the Depot application in subsequent chapters.
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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.