Building a Forum Elixir GraphQL Backend with Absinthe

Setting up a Phoenix app with Absinthe to serve our data layer over GraphQL

Previously, we built the data model for a Forum as one app in an umbrella application. Today we'll add a Phoenix app to the umbrella and use Absinthe to provide access to the data model via GraphQL for end users.

We'll begin by creating the Phoenix application itself. We don't need Ecto, because our data layer manages the interaction with the database, and we don't need webpack

cd apps # If you don't already have the latest installer mix archive.install hex phx_new 1.4.0 mix firestorm --no-ecto --no-webpack cd firestorm

Now that we have a Phoenix app, we'd like to introduce our initial dependencies. We need absinthe and absinthe_plug for absinthe itself. We also depend on our data layer from the umbrella.

# mix.exs defmodule Firestorm.Mixfile do # ... defp deps do [ # ... {:absinthe, "~> 1.4"}, {:absinthe_plug, "~> 1.4"}, {:firestorm_data, in_umbrella: true} ] end end

We'll fetch the dependencies:

mix deps.get

In our...

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