April 2016
Beginner to intermediate
300 pages
6h 58m
English
Content preview from Programming PhoenixBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Wrapping Up
In this chapter, we pushed Ecto a little harder. We started with queries and went deep into the query API. We explored constraints and how Ecto integrates with the database, ensuring that our data is kept clean and consistent. We also built a category layer. Along the way, you learned many things about the Phoenix philosophy:
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We used Ecto’s query API, which is independent of the repository API, to do some basic queries.
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We used two forms of queries, a keyword list–based syntax and a pipe-based syntax.
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We used fragments to pass SQL commands through the query API unchanged.
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We explored the different ways Ecto queries work with relationships, beyond data preloading.
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We wrote constraint-style validations for unique indexes and foreign-key ...
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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.