WIP

main.ex

@@ -187,3 +187,52 @@ defmodule Sfe.HomeLive do
     {:noreply, assign(socket, :count, counter_value())}
   end
 end
+
+defmodule UserGroup do
+  use Ecto.Schema
+  schema "users_groups" do
+    field(:user_id)
+    field(:group_id)
+    timestamps()
+  end
+end
+
+defmodule User do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  schema "users" do
+    field(:email)
+    field(:avatar)
+    many_to_many(:groups, Group, join_through: UserGroup)
+    timestamps()
+  end
+
+  def create(struct \\ %__MODULE__{}, params) do
+    struct
+    |> cast(params, @required)
+    |> validate_required([:avatar, :email, :name])
+    |> validate_format(:avatar, :url)
+    |> validate_url_is_an_image(:avatar)
+    |> validate_format(:email, ~r/@/)
+    |> validate_length(:email, {:gt, 3}) # I don't know how to use this off the top of my head
+    |> validate_length(:name, 2)
+    # and more validations for name and email and whatever
+  end
+
+  def create_from_referral(struct \\ %__MODULE__{}, params) do
+    struct
+    |> create()
+    |> cast(params, [:referrer])
+    |> validate_referrer(:referrer)
+  end
+end
+
+defmodule Group do
+  use Ecto.Schema
+  schema "groups" do
+    field(:name)
+    many_to_many(:users, User, join_through: UserGroup)
+    timestamps()
+  end
+end

mix.exs

@@ -23,6 +23,7 @@ defmodule Sfe.MixProject do
   defp deps(),
     do: [
       # {:credo, "~> 1.6", only: [:dev, :test], runtime: false},
+      {:ecto, "~> 3.12"},
       {:bandit, "~> 1.2"},
       {:jason, "~> 1.0"},
       {:phoenix, "~> 1.7"},

mix.lock

@@ -1,6 +1,8 @@
 %{
   "bandit": {:hex, :bandit, "1.4.1", "6ff703b33a967bc20b41ed3840a4c58e62abe62b4cc598cff7429af78e174990", [:mix], [{:hpax, "~> 0.1.1", [hex: :hpax, repo: "hexpm", optional: false]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:thousand_island, "~> 1.0", [hex: :thousand_island, repo: "hexpm", optional: false]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "5bbc0a4c185358b7d566a3b7b32806723ae139a8704cdc841ad787b677adcb9a"},
   "castore": {:hex, :castore, "1.0.6", "ffc42f110ebfdafab0ea159cd43d31365fa0af0ce4a02ecebf1707ae619ee727", [:mix], [], "hexpm", "374c6e7ca752296be3d6780a6d5b922854ffcc74123da90f2f328996b962d33a"},
+  "decimal": {:hex, :decimal, "2.1.1", "5611dca5d4b2c3dd497dec8f68751f1f1a54755e8ed2a966c2633cf885973ad6", [:mix], [], "hexpm", "53cfe5f497ed0e7771ae1a475575603d77425099ba5faef9394932b35020ffcc"},
+  "ecto": {:hex, :ecto, "3.12.4", "267c94d9f2969e6acc4dd5e3e3af5b05cdae89a4d549925f3008b2b7eb0b93c3", [:mix], [{:decimal, "~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ef04e4101688a67d061e1b10d7bc1fbf00d1d13c17eef08b71d070ff9188f747"},
   "file_system": {:hex, :file_system, "1.0.0", "b689cc7dcee665f774de94b5a832e578bd7963c8e637ef940cd44327db7de2cd", [:mix], [], "hexpm", "6752092d66aec5a10e662aefeed8ddb9531d79db0bc145bb8c40325ca1d8536d"},
   "hpax": {:hex, :hpax, "0.1.2", "09a75600d9d8bbd064cdd741f21fc06fc1f4cf3d0fcc335e5aa19be1a7235c84", [:mix], [], "hexpm", "2c87843d5a23f5f16748ebe77969880e29809580efdaccd615cd3bed628a8c13"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},