tasks_controller.rb

def update
    @task = Task.find_by_id(params[:id])
    
    respond_to do |format|
      if @task.update_attributes(params[:task])
        flash[:success] = "<strong>Success!</strong> #{@task.subject} was successfully edited.".html_safe
      end
      format.js { render :template => "admin/tasks/update.js.erb", 
        :locals => { :task => @task, :redirect_path =>   } #admin_tasks_path
      } # update.js.erb
    end
  end

update.js.erb

jQuery(function($) {
	<%= render :partial => "admin/shared/modal_ujs",
		:locals => { 
			:resource => task,
			:form_el => "edit-task-form#{task.id}",
			:redirect_path => redirect_path
		} 
	%>
});