switched to binary ids for db

priv/repo/migrations/20200913000515_create_users_auth_tables.exs

@@ -4,7 +4,8 @@ defmodule Bones73k.Repo.Migrations.CreateUsersAuthTables do
   def change do
     execute("CREATE EXTENSION IF NOT EXISTS citext", "")
 
-    create table(:users) do
+    create table(:users, primary_key: false) do
+      add(:id, :binary_id, primary_key: true)
       add(:email, :citext, null: false)
       add(:hashed_password, :string, null: false)
       add(:confirmed_at, :naive_datetime)
@@ -13,8 +14,9 @@ defmodule Bones73k.Repo.Migrations.CreateUsersAuthTables do
 
     create(unique_index(:users, [:email]))
 
-    create table(:users_tokens) do
-      add(:user_id, references(:users, on_delete: :delete_all), null: false)
+    create table(:users_tokens, primary_key: false) do
+      add(:id, :binary_id, primary_key: true)
+      add(:user_id, references(:users, type: :binary_id, on_delete: :delete_all), null: false)
       add(:token, :binary, null: false)
       add(:context, :string, null: false)
       add(:sent_to, :string)

priv/repo/migrations/20200914162043_create_properties.exs

@@ -2,11 +2,12 @@ defmodule Bones73k.Repo.Migrations.CreateProperties do
   use Ecto.Migration
 
   def change do
-    create table(:properties) do
+    create table(:properties, primary_key: false) do
+      add(:id, :binary_id, primary_key: true)
       add(:name, :string)
       add(:price, :decimal)
       add(:description, :text)
-      add(:user_id, references(:users, on_delete: :nothing))
+      add(:user_id, references(:users, type: :binary_id, on_delete: :nothing))
 
       timestamps()
     end

priv/repo/seeds.exs

@@ -10,10 +10,10 @@
 # We recommend using the bang functions (`insert!`, `update!`
 # and so on) as they will fail if something goes wrong.
 
+import Ecto.Query
 alias Bones73k.Repo
 alias Bones73k.Accounts
 alias Bones73k.Accounts.User
-alias Bones73k.Properties
 alias Bones73k.Properties.Property
 
 ############################################################################
@@ -114,15 +114,18 @@ count_to_take = 123
 
 mock_props = props_json |> File.read!() |> Jason.decode!() |> Enum.take_random(count_to_take)
 
+random_user_query = from User, order_by: fragment("RANDOM()"), limit: 1
+
 mock_props =
   Enum.map(mock_props, fn e ->
     add_dt = NaiveDateTime.from_iso8601!(e["inserted_at"])
+    rand_user = Repo.one(random_user_query)
 
     %{
       name: e["name"],
       price: e["price"],
       description: e["description"],
-      user_id: e["user_id"],
+      user_id: rand_user.id,
       inserted_at: add_dt,
       updated_at: add_dt
     }