Ecto Patterns for Phoenix/Elixir

Ecto is the data layer for Phoenix applications: schemas, changesets, queries, migrations, and transactions. Good Ecto practice keeps domain logic in contexts, enforces constraints in the database, and uses transactions for multi-step workflows.

Schemas and Changesets

defmodule MyApp.Accounts.User do
  use Ecto.Schema
  import Ecto.Changeset

  schema "users" do
    field :email, :string
    field :hashed_password, :string
    field :confirmed_at, :naive_datetime
    has_many :memberships, MyApp.Orgs.Membership
    timestamps()
  end