Added i18n coverage logic to the CocoModel.

app/models/CocoModel.coffee

@@ -332,6 +332,30 @@ class CocoModel extends Backbone.Model
       error: ->
         console.error 'Miserably failed to fetch unnotified achievements', arguments
 
-CocoModel.pollAchievements = _.debounce CocoModel.pollAchievements, 500
+  CocoModel.pollAchievements = _.debounce CocoModel.pollAchievements, 500
+  
+  
+  #- Internationalization
+
+  updateI18NCoverage: ->
+    i18nObjects = @findI18NObjects()
+    console.log 'i18n objects', i18nObjects
+    langCodeArrays = (_.keys(i18n) for i18n in i18nObjects)
+    console.log 'lang code arrays', langCodeArrays
+    window.codes = langCodeArrays
+    @set('i18nCoverage', _.intersection(langCodeArrays...))
+    
+  findI18NObjects: (data, results) ->
+    data ?= @attributes
+    results ?= []
+    
+    if _.isPlainObject(data) or _.isArray(data)
+      for [key, value] in _.pairs data
+        if key is 'i18n'
+          results.push value
+        else if _.isPlainObject(value) or _.isArray(value)
+          @findI18NObjects(value, results)
+    
+    return results
 
 module.exports = CocoModel

test/app/models/CocoModel.spec.coffee

@@ -150,3 +150,27 @@ describe 'CocoModel', ->
           else return ready false
 
           request.response {status:200, responseText: JSON.stringify me}
+
+  describe 'updateI18NCoverage', ->
+    class FlexibleClass extends CocoModel
+      @className: 'Flexible'
+      @schema: {}
+
+    it 'only includes languages for which all objects include a translation', ->
+      m = new FlexibleClass({
+        i18n: { es: {}, fr: {} }
+        prop1: 1
+        prop2: 'string'
+        prop3: true
+        innerObject: {
+          i18n: { es: {}, de: {}, fr: {} }
+          prop4: [
+            {
+              i18n: { es: {} }
+            }
+          ]
+        }
+      })
+
+      m.updateI18NCoverage()
+      expect(JSON.stringify(m.get('i18nCoverage'))).toBe('["es"]')