Intro to Elixir (GraphQL mutations and CRUD)

GraphQL is truly the REST of the future. In this tutorial, we build out some of our mutation functionality and add CRUD functionality to the post schema of our application. We also look at setting up password encryption and decryption as well as Token and Session handling in Phoenix for User Authentication via the GraphQL Endpoint.

GraphQL features two different types of operations; Mutations and Queries. In the last post, we look at just Queries, but in this post we add Mutations to our endpoint. These mutations allow us to change the underlying data system in our program. This gives us the ability to read, update, create, and delete data from our system via requests. These mutation requests can also be used to do more complicated tasks such as passing login tokens and session ids to the user.

Phoenix 1.3's context model really helps us out in many of these instances. Rather then having to write and rewrite many different similar functions for the same functionality, we can easily use the boilerplate functions that were created for us when we ran our generators to access our data without getting our hands too dirty. This type of programming works really well in a GraphQL API Endpoint and also is suited for average RESTful APIs as well.

Full Github Source Code is here

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