execute controller/action from javascript in rails3

Question

I have a following function in my _new.html.erb. I would like to call a controller when the element_id_placeholder is changed:

 <script type="text/javascript">

    // When DOM loads, init the page.
    $(function() {
      // Executes a callback detecting changes with a frequency of 1 second
      $("#id_element_placeholder").observe_field(1, function( ) {                                       
        alert('Change observed! new value: ' + this.value );
        // call controller 

      });
    });

  </script>

I'm using rails 3

apneadiving · Accepted Answer · 2011-01-21 01:38:02Z

5

Use jQuery's ajax method:

$.ajax({
type: "GET",
url: "/articles/" + $(this).attr('value'),
success: function(data){}
});

http://api.jquery.com/jQuery.ajax/

answered Jan 21, 2011 at 1:38

apneadiving

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1 Comment

user140736 Over a year ago

Thanks that works but it goes to my controller/view. How would I call some method which would return me back the model Object or even a json object that I can build as part of that method?

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