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Building Database Applications in Elixir with Ecto

Create Your Repo Module

Explore how to create and configure an Ecto repository module in an Elixir application without Phoenix. Understand setting the adapter, OTP app, and database connection details to enable interaction with PostgreSQL or other databases using Ecto.

We'll cover the following...

Next, we need to create our application’s repository module. We went through this process in detail before, but we’ll run through it again here.

Creating repo.ex file

Open a new file called lib/my_app/repo.ex and add the following:

Elixir
defmodule MyApp.Repo do 
  use Ecto.Repo,
    otp_app: :my_app,
    adapter: Ecto.Adapters.Postgres 
end

Explanation

The use Ecto.Repo directive will make our module a bona fide Ecto repository—all of Ecto’s repository functions will be defined and made available on this module. For more details on how this works, see ...