[day-04] add training schema

With this we can represent a traning program for a user.

lib/wabanex/training.ex

@@ -0,0 +1,28 @@
+defmodule Wabanex.Training do
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  alias Wabanex.{Exercise, User}
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+
+  @fields [:start_date, :end_date, :user_id]
+  @required_fields [:start_date, :user_id]
+
+  schema "trainings" do
+    field :start_date, :date
+    field :end_date, :date
+
+    belongs_to :user, User
+
+    timestamps()
+  end
+
+  def changeset(params) do
+    %__MODULE__{}
+    |> cast(params, @fields)
+    |> validate_required(@required_fields)
+  end
+end

lib/wabanex/trainings/create.ex

@@ -0,0 +1,9 @@
+defmodule Wabanex.Trainings.Create do
+  alias Wabanex.{Training, Repo}
+
+  def call(params) do
+    params
+    |> Training.changeset()
+    |> Repo.insert()
+  end
+end

lib/wabanex/user.ex

@@ -3,6 +3,8 @@ defmodule Wabanex.User do
 
   import Ecto.Changeset
 
+  alias Wabanex.Training
+
   @primary_key {:id, :binary_id, autogenerate: true}
 
   @fields ~w(name email password)a
@@ -12,6 +14,8 @@ defmodule Wabanex.User do
     field :email, :string
     field :password, :string
 
+    has_many :trainings, Training
+
     timestamps()
   end
 

priv/repo/migrations/20210624003633_create_trainings_table.exs

@@ -0,0 +1,13 @@
+defmodule Wabanex.Repo.Migrations.CreateTrainingsTable do
+  use Ecto.Migration
+
+  def change do
+    create table(:trainings) do
+      add :start_date, :date, null: false
+      add :end_date, :date
+      add :user_id, references(:users), null: false
+
+      timestamps()
+    end
+  end
+end