Added i18nCoverage backend support.

app/models/CocoModel.coffee

@@ -284,6 +284,7 @@ class CocoModel extends Backbone.Model
     if schema.items and _.isArray data
       sum += @populateI18N(value, schema.items, path+'/'+index) for value, index in data
 
+    @updateI18NCoverage()
     sum
 
   @getReferencedModel: (data, schema) ->

app/schemas/models/level.coffee

@@ -253,6 +253,7 @@ c.extendSearchableProperties LevelSchema
 c.extendVersionedProperties LevelSchema, 'level'
 c.extendPermissionsProperties LevelSchema, 'level'
 c.extendPatchableProperties LevelSchema
+c.extendTranslationCoverageProperties LevelSchema
 
 module.exports = LevelSchema
 

app/schemas/schemas.coffee

@@ -144,6 +144,10 @@ me.getLanguageCodeArray = ->
 
 me.getLanguagesObject = -> return Language
   
+me.extendTranslationCoverageProperties = (schema) ->
+  schema.properties = {} unless schema.properties?
+  schema.properties.i18nCoverage = { title: 'i18n Coverage', type: 'array', items: { type: 'string' }}
+
 # OTHER
 
 me.classNamePattern = '^[A-Z][A-Za-z0-9]*$'  # starts with capital letter; just letters and numbers

server/levels/Level.coffee

@@ -11,6 +11,7 @@ LevelSchema.plugin(plugins.PermissionsPlugin)
 LevelSchema.plugin(plugins.VersionedPlugin)
 LevelSchema.plugin(plugins.SearchablePlugin, {searchable: ['name', 'description']})
 LevelSchema.plugin(plugins.PatchablePlugin)
+LevelSchema.plugin(plugins.TranslationCoveragePlugin)
 
 LevelSchema.post 'init', (doc) ->
   if _.isString(doc.get('nextLevel'))

server/levels/thangs/ThangType.coffee

@@ -9,5 +9,6 @@ ThangTypeSchema.plugin plugins.NamedPlugin
 ThangTypeSchema.plugin plugins.VersionedPlugin
 ThangTypeSchema.plugin plugins.SearchablePlugin, {searchable: ['name']}
 ThangTypeSchema.plugin plugins.PatchablePlugin
+ThangTypeSchema.plugin plugins.TranslationCoveragePlugin
 
 module.exports = mongoose.model('thang.type', ThangTypeSchema)

server/levels/thangs/thang_type_handler.coffee

@@ -35,6 +35,7 @@ ThangTypeHandler = class ThangTypeHandler extends Handler
     'rasterIcon'
     'featureImage'
     'spriteType'
+    'i18nCoverage'
   ]
 
   hasAccess: (req) ->

server/plugins/plugins.coffee

@@ -281,7 +281,7 @@ module.exports.SearchablePlugin = (schema, options) ->
 
   searchable = options.searchable
   unless searchable
-    throw Error('SearchablePlugin options must include list of searchable properties.')
+    throw new Error('SearchablePlugin options must include list of searchable properties.')
 
   index = {}
 
@@ -307,3 +307,19 @@ module.exports.SearchablePlugin = (schema, options) ->
       @index = @getOwner() unless access
 
     next()
+
+module.exports.TranslationCoveragePlugin = (schema, options) ->
+  
+  schema.uses_coco_translation_coverage = true
+  schema.set('autoIndex', true)
+  
+  index = {}
+  
+  if schema.uses_coco_versions
+    if not schema.uses_coco_names
+      throw Error('If using translation coverage and versioning, should also use names for indexing.')
+    index.slug = 1
+    
+  index.i18nCoverage = 1
+  
+  schema.index(index, {sparse: true, name: 'translation coverage index', background: true})