Add model for admins

app/models/site_role.rb

@@ -0,0 +1,3 @@
+class SiteRole < ApplicationRecord
+  validates :name, presence: true
+end

app/models/user.rb

@@ -1,4 +1,6 @@
 class User < ApplicationRecord
+  has_and_belongs_to_many :site_roles
+
   has_secure_password
   generates_token_for :password_reset, expires_in: 4.hours do
     password_salt.last(10) # Invalidates when password changed
@@ -35,4 +37,8 @@ class User < ApplicationRecord
 
     "#{first_name} #{last_name}"
   end
+
+  def admin?
+    site_roles.include? SiteRole.find_by(name: "Admin")
+  end
 end

db/migrate/20240526085315_create_user_roles.rb

@@ -0,0 +1,14 @@
+class CreateUserRoles < ActiveRecord::Migration[7.1]
+  def change
+    create_table :site_roles do |t|
+      t.string :name, null: false
+
+      t.timestamps
+    end
+
+    create_table :site_roles_users do |t|
+      t.belongs_to :user
+      t.belongs_to :site_role
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_05_26_084840) do
+ActiveRecord::Schema[7.1].define(version: 2024_05_26_085315) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -20,6 +20,19 @@ ActiveRecord::Schema[7.1].define(version: 2024_05_26_084840) do
     t.datetime "updated_at", null: false
   end
 
+  create_table "site_roles", force: :cascade do |t|
+    t.string "name", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "site_roles_users", force: :cascade do |t|
+    t.bigint "user_id"
+    t.bigint "site_role_id"
+    t.index ["site_role_id"], name: "index_site_roles_users_on_site_role_id"
+    t.index ["user_id"], name: "index_site_roles_users_on_user_id"
+  end
+
   create_table "users", force: :cascade do |t|
     t.string "username", limit: 20, null: false
     t.string "password_digest", limit: 200, null: false

test/fixtures/site_roles.yml

@@ -0,0 +1,2 @@
+admin:
+  name: Admin

test/integration/permissions_test.rb

@@ -0,0 +1,11 @@
+require "test_helper"
+
+class PermissionsTest < ActionDispatch::IntegrationTest
+  test "admin? returns true for users with an admin role" do
+    user = users(:trevor)
+    assert_not user.admin?
+
+    user.site_roles << site_roles(:admin)
+    assert user.admin?
+  end
+end

test/models/site_role_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class UserRoleTest < ActiveSupport::TestCase
+  test "name must exist" do
+    assert_must_exist(site_roles(:admin), :name)
+  end
+end