Gab Social. All are welcome.

app/models/concerns/user_roles.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module UserRoles
+  extend ActiveSupport::Concern
+
+  included do
+    scope :admins, -> { where(admin: true) }
+    scope :moderators, -> { where(moderator: true) }
+    scope :staff, -> { admins.or(moderators) }
+  end
+
+  def staff?
+    admin? || moderator?
+  end
+
+  def role
+    if admin?
+      'admin'
+    elsif moderator?
+      'moderator'
+    else
+      'user'
+    end
+  end
+
+  def role?(role)
+    case role
+    when 'user'
+      true
+    when 'moderator'
+      staff?
+    when 'admin'
+      admin?
+    else
+      false
+    end
+  end
+
+  def promote!
+    if moderator?
+      update!(moderator: false, admin: true)
+    elsif !admin?
+      update!(moderator: true)
+    end
+  end
+
+  def demote!
+    if admin?
+      update!(admin: false, moderator: true)
+    elsif moderator?
+      update!(moderator: false)
+    end
+  end
+end