How to send GET request to rails from javascript

Question

I've been googling all day and still couldn't find any answers.So basically in my javascript function, I want to send a GET request to my rails controller and the rails controller will send back a JSON object. Any idea how do I do this? thnx

Answer 1

Using jQuery I would do something like this:

In the selector and event you want, for instance on clicking some element:

$(function() {
  $('#foo').click( function(){
    var params = '{"field1": "value1", "field2: "value2"}'; 
    $.get('/controller/bar', params, function(data){ 
      alert(data); 
    });
  });
});

Then in your Rails controller:

def bar
  /// hack hack hack
  render :json => {"response" => "OK"}
end

The in your routes.rb:

  match 'controller/bar' => 'controller#bar'

Finally, change "controller" according to your code. Firebug is your friend!