🐛Fix auto level solutions numbering

Practice levels were being numbered normally.

app/templates/teachers/teacher-course-solution-view.jade

@@ -16,7 +16,7 @@ block content
 
     if view.levels
       each level, index in view.levels.models
-        h2.page-break-before ##{index + 1}. #{i18n(level.attributes, 'name')}
+        h2.page-break-before ##{view.levelNumberMap[level.get('original')]}. #{i18n(level.attributes, 'name')}
         h3(data-i18n="teacher.level_overview_solutions")
         i #{i18n(level.attributes, 'description')}
         div

app/views/teachers/TeacherCourseSolutionView.coffee

@@ -1,3 +1,4 @@
+utils = require 'core/utils'
 RootView = require 'views/core/RootView'
 CocoCollection = require 'collections/CocoCollection'
 Course = require 'models/Course'
@@ -16,6 +17,7 @@ module.exports = class TeacherCourseSolutionView extends RootView
       @supermodel.trackRequest(@course.fetch())
       @levels = new CocoCollection([], { url: "/db/course/#{@courseID}/level-solutions", model: Level})
       @supermodel.loadCollection(@levels, 'levels', {cache: false})
+      @levelNumberMap = {}
     super(options)
 
   camelCaseLanguage: (language) ->
@@ -44,4 +46,9 @@ module.exports = class TeacherCourseSolutionView extends RootView
         level.set 'begin',  _.template(programmableMethod.languages[@language] or programmableMethod.source)(programmableMethod.context)
         solution = programmableMethod.solutions?.find (x) => x.language is @language
         level.set 'solution',  _.template(solution?.source)(programmableMethod.context)
+    levels = []
+    for level in @levels?.models when level.get('original')
+      continue if @language? and level.get('primerLanguage') is @language
+      levels.push({key: level.get('original'), practice: level.get('practice') ? false})
+    @levelNumberMap = utils.createLevelNumberMap(levels)
     @render?()

server/middleware/courses.coffee

@@ -35,7 +35,7 @@ module.exports =
 
     levelOriginals = (mongoose.Types.ObjectId(levelID) for levelID in sortedLevelIDs)
     query = { original: { $in: levelOriginals }, slug: { $exists: true }}
-    select = {documentation: 1, intro: 1, name: 1, original: 1, slug: 1, thangs: 1, i18n: 1}
+    select = {documentation: 1, intro: 1, name: 1, original: 1, practice: 1, slug: 1, thangs: 1, i18n: 1}
     levels = yield Level.find(query).select(select).lean()
     levels.sort((a, b) -> sortedLevelIDs.indexOf(a.original + '') - sortedLevelIDs.indexOf(b.original + ''))
     res.status(200).send(levels)