From 90a4a1b635db04f91564537ad8a3e4afeaa6ea47 Mon Sep 17 00:00:00 2001
From: Scott Erickson <sderickson@gmail.com>
Date: Thu, 17 Jul 2014 16:22:06 -0700
Subject: [PATCH] Added setProjection so CocoModels can more easily get subsets
 of data.

---
 app/models/CocoModel.coffee           | 15 +++++++++++----
 test/app/models/CocoModel.spec.coffee |  8 ++++++++
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/app/models/CocoModel.coffee b/app/models/CocoModel.coffee
index 045843306..5da19cab3 100644
--- a/app/models/CocoModel.coffee
+++ b/app/models/CocoModel.coffee
@@ -13,8 +13,10 @@ class CocoModel extends Backbone.Model
 
   getMe: -> @me or @me = require('lib/auth').me
 
-  initialize: ->
-    super()
+  initialize: (attributes, options) ->
+    super(arguments...)
+    options ?= {}
+    @setProjection options.project
     if not @constructor.className
       console.error("#{@} needs a className set.")
     @addSchemaDefaults()
@@ -22,6 +24,8 @@ class CocoModel extends Backbone.Model
     @on 'error', @onError, @
     @on 'add', @onLoaded, @
     @saveBackup = _.debounce(@saveBackup, 500)
+    
+  setProjection: (@project) ->
 
   type: ->
     @constructor.className
@@ -116,8 +120,11 @@ class CocoModel extends Backbone.Model
     console.debug 'Patching', @get('name') or @, keys
     @save(attrs, options)
 
-  fetch: ->
-    @jqxhr = super(arguments...)
+  fetch: (options) ->
+    options ?= {}
+    options.data ?= {}
+    options.data.project = @project.join(',') if @project
+    @jqxhr = super(options)
     @loading = true
     @jqxhr
 
diff --git a/test/app/models/CocoModel.spec.coffee b/test/app/models/CocoModel.spec.coffee
index 67e019c9a..7f2529466 100644
--- a/test/app/models/CocoModel.spec.coffee
+++ b/test/app/models/CocoModel.spec.coffee
@@ -14,6 +14,14 @@ class BlandClass extends CocoModel
   urlRoot: '/db/bland'
 
 describe 'CocoModel', ->
+  describe 'setProjection', ->
+    it 'takes an array of properties to project and adds them as a query parameter', ->
+      b = new BlandClass({})
+      b.setProjection ['number', 'object']
+      b.fetch()
+      request = jasmine.Ajax.requests.mostRecent()
+      expect(decodeURIComponent(request.url).indexOf('project=number,object')).toBeGreaterThan(-1)
+  
   describe 'save', ->
 
     it 'saves to db/<urlRoot>', ->