Backbone Save() Not Sending Post

Question

I'm new to Backbone so hopefully I'm just missing something simple. I'm working on building a simple survey creation/survey taking app to work through nested models, etc. I'm running a restful Rails server for the back-end.

I'm struggling with getting the survey models to save to the server though. It doesn't seem like a post request is actually happening and thus it's not actually getting updated. Any ideas what I'm missing?

Survey model:

class SurveyMe.Models.Survey extends Backbone.Model

Survey Edit View:

 class SurveyMe.Views.SurveyEdit extends Backbone.View

      template: JST['templates/surveys/survey_edit']

      initialize: ->
        @model.on('all', @render, this)

      events: {
        'click #back': 'back'
        'submit #survey': 'update'
      }

      render: ->
        $(@el).html(@template(survey: @model))
        this

      back: ->
        Backbone.history.navigate("surveys",true)

      update: ->
        @model.set("title", $('#title').val())
        @model.set("survey_limit", $('#survey_limit').val())
        @model.save()
        Backbone.history.navigate("surveys",true)

Survey Edit Template:

<h1>Edit Survey</h1>
<form id="survey">
<div class="input-group">
    <span class="input-group-addon">Title:</span>
    <input id="title" type="text" class="form-control" value="<%= @survey.get('title') %>">
    <br>
</div>
<br>
<div class="input-group">
    <span class="input-group-addon">Desired Responses:</span>
    <input id="survey_limit" type="text" class="form-control" value="<%= @survey.get('survey_limit') %>">
    <br>
</div>
<hr>
<button class="btn" id="back">Back</button>
<input type="submit" class="btn" id="update" value="Update">
</form>

EDIT: Adding Index/Router/Collection

Index:

class SurveyMe.Views.SurveysIndex extends Backbone.View

  template: JST['templates/surveys/index']

  events:
    'submit #survey':'createSurvey'

  initialize: ->
    @collection.on('reset', @render, this)
    @collection.on('add', @addSurvey, this)

  render: ->
    $(@el).html(@template())
    @collection.each(@addSurvey)
    console.log(@collection.length)
    this  

  addSurvey: (survey) ->
    view = new SurveyMe.Views.Survey(model: survey)
    @$('#surveys').append(view.render().el)

  createSurvey: ->
    console.log("Survey created")

Router:

class SurveyMe.Routers.Surveys extends Backbone.Router
  routes: 
    'surveys/:id': 'edit',
    'surveys': "index"

  initialize: ->
    @collection = new SurveyMe.Collections.Surveys()
    @collection.fetch(reset: true)

  index: ->
    view = new SurveyMe.Views.SurveysIndex(collection: @collection)
    $("#container").html(view.render().el)

  edit: (id) ->
    survey = @collection.get(id)
    view = new SurveyMe.Views.SurveyEdit(model: survey)
    $("#container").html(view.render().el)

Collection:

class SurveyMe.Collections.Surveys extends Backbone.Collection

  model: SurveyMe.Models.Survey

  url: '/surveys/'

Answer 1

Wild guess here but it may be because you are using a simple arrow instead of a fat arrow in coffeescript:

update: ->
  @title = $('#title').val()
  @survey_limit = $('#survey_limit').val()
  this.save()

You are getting into this method from an even, which means that this is scoped to the event trigger rather than the model. Use the fat arrow:

update: =>

And it should be fine...