Adds a User.admin scope (#25416).

git-svn-id: http://svn.redmine.org/redmine/trunk@16449 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/user.rb

@@ -129,6 +129,10 @@ class User < Principal
   after_save :update_notified_project_ids, :destroy_tokens, :deliver_security_notification
   after_destroy :deliver_security_notification
 
+  scope :admin, lambda {|*args|
+    admin = args.size > 0 ? !!args.first : true
+    where(:admin => admin)
+  }
   scope :in_group, lambda {|group|
     group_id = group.is_a?(Group) ? group.id : group.to_i
     where("#{User.table_name}.id IN (SELECT gu.user_id FROM #{table_name_prefix}groups_users#{table_name_suffix} gu WHERE gu.group_id = ?)", group_id)
@@ -707,7 +711,7 @@ class User < Principal
   # Returns true if the user is allowed to delete the user's own account
   def own_account_deletable?
     Setting.unsubscribe? &&
-      (!admin? || User.active.where("admin = ? AND id <> ?", true, id).exists?)
+      (!admin? || User.active.admin.where("id <> ?", id).exists?)
   end
 
   safe_attributes 'firstname',

test/unit/user_test.rb

@@ -36,6 +36,24 @@ class UserTest < ActiveSupport::TestCase
     @dlopper = User.find(3)
   end
 
+  def test_admin_scope_without_args_should_return_admin_users
+    users = User.admin.to_a
+    assert users.any?
+    assert users.all? {|u| u.admin == true}
+  end
+
+  def test_admin_scope_with_true_should_return_admin_users
+    users = User.admin(true).to_a
+    assert users.any?
+    assert users.all? {|u| u.admin == true}
+  end
+
+  def test_admin_scope_with_false_should_return_non_admin_users
+    users = User.admin(false).to_a
+    assert users.any?
+    assert users.all? {|u| u.admin == false}
+  end
+
   def test_sorted_scope_should_sort_user_by_display_name
     # Use .active to ignore anonymous with localized display name
     assert_equal User.active.map(&:name).map(&:downcase).sort,
@@ -1049,7 +1067,7 @@ class UserTest < ActiveSupport::TestCase
   end
 
   def test_own_account_deletable_should_be_false_for_a_single_admin
-    User.where(["admin = ? AND id <> ?", true, 1]).delete_all
+    User.admin.where("id <> ?", 1).delete_all
 
     with_settings :unsubscribe => '1' do
       assert_equal false, User.find(1).own_account_deletable?