通过Javascript动态添加Rails

Question

I have a rails form that includes a listbox

<div id = "tloList">
    <%= select_tag("task[tlo_ids][]", options_from_collection_for_select(TLO.all, "id", "statement"), :multiple => true, :onchange => "populateTasks()") %>.
</div>

<div id = "taskList">
</div>

<script>
  function populateTasks(){
     alert("CLICKED"); 
   }

<script>

After a user selects a TLO, I want to dynamically create another select tag for Tasks in the TaskList div. I've had no success with the following insider the populateTask() function by have had zero luck:

document.getElementById("taskList").insert(<%= select_tag("tlo[task_ids][]", options_from_collection_for_select(Task.all, "id", "statement"), :multiple => true %>);

Does anyone see what I am doing incorrectly?

Answer 1

Are you getting an exception or is it not working as expected? It looks like your syntax is off. You may have an extra space in options_from_collection_for select(TLO.all, "id", "statement") Try this: options_from_collection_for_select(TLO.all, "id", "statement")

Also, where is your closing parens for your select_tag ?