Question

I am requesting a JSON response via $.ajax in my rails project.

jQuery ->
  testAjax()


testAjax = ->
  $.ajax
    url: "/gmap/test"
    data: "id=2"
    type: "GET"
    dataType: "json"
    complete: (data_response) ->
      result = $.parseJSON(data_response)
      alert(result.name)

I seem to get a correct json string back (according to Firebug console), which looks like this:

{"name":"Space Needle","latitude":47.620471,"longitude":-122.349341}

However, I get an error complaining “TypeError: result is null”

If I use

alert(data_response.responseText)

in the complete function, I get the json string. So the problem seems to be the parsing. (???)

Answer 1

Dooh! Thanks @KevinB, your comment about success and complete has solved it. It’s so simple, use the former instead of the latter:

jQuery ->
  testAjax()
  #initialize()


testAjax = ->
  $.ajax
    url: "/gmap/test"
    data: "id=2"
    type: "GET"
    contentType: "application/json"
    dataType: "json"
    success: (data) ->
      alert(data.name)