admin status change

app/controllers/panel/users_controller.rb

@@ -43,7 +43,10 @@ class Panel::UsersController < ApplicationController
     @user.remove_avatar! if params[:file]
     @user.avatar = params[:file] if params[:file]
     
-    if @user.update_attributes(params[:user])
+    if @user.id.to_s.eql?(session['warden.user.user.key'][1].to_s) && @user.admin != params[:user][:admin].to_i.to_b
+      flash.now[:error] = t('panel.cant_revoke_self_admin')
+    end
+    if !flash[:error] && @user.update_attributes(params[:user])
       flash[:notice] = t('panel.update_success_user')
       redirect_to :action => :index
     else