Use more fetch instead of find

fetch method returns a promise instead of an actual object. We used find
before, because this was the way we did things before upgrade to Ember
Model. Returning a promise from a model hook pauses router rendering for
the time a resource is loading, which makes it much easier to deal with
asynchronous requests. Thanks to that we can remove parts of the code,
which dealt with it manually.

assets/scripts/app/models/repo.coffee

@@ -135,5 +135,12 @@ require 'travis/model'
     repo = $.select(@find().toArray(), (repo) -> repo.get('slug') == slug)
     if repo.length > 0 then repo else @find(slug: slug)
 
+  fetchBySlug: (slug) ->
+    repos = $.select(@find().toArray(), (repo) -> repo.get('slug') == slug)
+    if repos.length > 0
+      repos[0]
+    else
+      @fetch(slug: slug).then (repos) -> Ember.get(repos, 'firstObject')
+
   # buildURL: (slug) ->
   #   if slug then slug else 'repos'

assets/scripts/app/models/user.coffee

@@ -58,7 +58,7 @@ require 'travis/model'
     @get('_rawPermissions').then (data) => permissions.set('content', data.push)
     permissions
   ).property()
-  
+
   updateLocale: (locale) ->
     @save()
     Travis.setLocale(locale)
@@ -77,7 +77,10 @@ require 'travis/model'
   poll: ->
     Travis.ajax.get '/users', (data) =>
       if data.user.is_syncing
-        Ember.run.later(this, this.poll.bind(this), 3000)
+        self = this
+        setTimeout ->
+          self.poll()
+        , 3000
       else
         @set('isSyncing', false)
         @setWithSession('syncedAt', data.user.synced_at)

assets/scripts/app/routes.coffee

@@ -218,7 +218,7 @@ Travis.BuildRoute = Ember.Route.extend
     repo.set('build', model)
 
   model: (params) ->
-    Travis.Build.find(params.build_id)
+    Travis.Build.fetch(params.build_id)
 
 Travis.JobRoute = Ember.Route.extend
   renderTemplate: ->
@@ -236,19 +236,12 @@ Travis.JobRoute = Ember.Route.extend
     repo.set('job', model)
     repo.activate('job')
 
-    # since we're no longer using promises, the setupController resolves right away,
+    if build = model.get('build')
-    # so we need to wait for build to be loaded
+      @controllerFor('build').set('build', build)
-    buildObserver = ->
+      repo.set('build', build)
-      if build = model.get('build')
-        @controllerFor('build').set('build', build)
-        repo.set('build', build)
-
-        model.removeObserver('build', buildObserver)
-    model.addObserver('build', this, buildObserver)
-    buildObserver.apply(this)
 
   model: (params) ->
-    Travis.Job.find(params.job_id)
+    Travis.Job.fetch(params.job_id)
 
 Travis.RepoIndexRoute = Ember.Route.extend Travis.SetupLastBuild,
   setupController: (controller, model) ->
@@ -275,30 +268,13 @@ Travis.RepoRoute = Ember.Route.extend
 
   model: (params) ->
     slug = "#{params.owner}/#{params.name}"
-    content = Ember.Object.create slug: slug, isLoaded: false, isLoading: true
-    proxy = Ember.ObjectProxy.create(content: content)
 
-    repos = Travis.Repo.bySlug(slug)
+    Travis.Repo.fetchBySlug(slug)
 
-    self = this
+  actions:
-
+    error: ->
-    observer = ->
+      Ember.run.next this, ->
-      if repos.get 'isLoaded'
+        @render('repos/not_found', outlet: 'main')
-        repos.removeObserver 'isLoaded', observer
-        proxy.set 'isLoading', false
-
-        if repos.get('length') == 0
-          Ember.run.next ->
-            self.render('repos/not_found', outlet: 'main')
-        else
-          proxy.set 'content', repos.objectAt(0)
-
-    if repos.length
-      proxy.set('content', repos[0])
-    else
-      repos.addObserver 'isLoaded', observer
-
-    proxy
 
 Travis.IndexRoute = Ember.Route.extend
   renderTemplate: ->
@@ -312,6 +288,10 @@ Travis.IndexRoute = Ember.Route.extend
     @container.lookup('controller:repos').activate()
     @container.lookup('controller:application').connectLayout 'home'
 
+Travis.IndexLoadingRoute = Ember.Route.extend
+  renderTemplate: ->
+    @render('index_loading')
+
 Travis.StatsRoute = Ember.Route.extend
   renderTemplate: ->
     $('body').attr('id', 'stats')

assets/scripts/lib/travis/ajax.coffee

@@ -59,7 +59,7 @@ Travis.ajax = Em.Object.create
     options = $.extend(options, Travis.ajax.DEFAULT_OPTIONS)
 
     if testMode?
-      console.log('RUnning ajax with', options.url)
+      console.log('Running ajax with', options.url)
 
       # we use jquery.mockjax for test, I don't want to hack it or rewrite it,
       # so let's just pretend we still use ajax if testing mode is on