Question

I am trying to get a jQuery.ajax to call back to the calling instance to process messages. However, I cannot get the calling instance into the function.

In the GetHistory call, a list of messages are returned and I want the Process method to act on each one. The problem is that during the callback function execution an error is returned stating “this.Process is undefined”. This is why I am guessing the instance is not being set.

I also tried adding the parameter to .ajax of ‘context:this’, but that didn’t seem to help.

class MessageHandler

  @messages: []

  Process: (message) ->
      messages.push message

  GetHistory: ->    
    jQuery.ajax url:'/home/BidDetail', dataType: 'json', data: 'auctionId=1', success:     (data) ->
      @Process record for record in data.records when record.type == 'BID'

Answer 1

Have you tried using => (the fat arrow) as suggested in Coffeescript/Javascript variable scope?