Rails select_tag onchange操作是否没有Ajax？

Question

In my index action of the hours controller I want to be able to switch between the diplayed hours. I am using a calendar_for table and inside the calendar I display the tracked times (hours) of the different user of my rails app. As I am using a quite complex calendar structure with some calculation inside, I don't know how to extract it to a partial, so I want the onchange event, which fires in the select_tag, to reload the index action with a different parameter.

I tried

<% form_for :hours, :url => { :action => "index" } do |f| %>
  <%= select_tag :user_id, options_from_collection_for_select(User.find(:all), :id, :name),
  { :onchange => "this.form.submit();"} %>
<% end %>

but this brings me to the new / form view (like i want to add a new record)? also the url just shows /hours

Any help would be appreciated....

I basically want that after changing the select menu the url looks like /hours?user_id=<id from select_tag>

thanks

Answer 1

I do not quite understand why do you need a form? The simplest way from my opinion is update your application.js file with something like this (assuming you use jquery):

$("#selector_id").change ( function () {
  window.location.replace('/hours?'+this.id);
});

Though probably there is some pretty rails helper for that.