Add way for admins to grant users course prepaids

app/templates/admin/administer-user-modal.jade

@@ -31,7 +31,24 @@ block modal-body-content
         select.form-control#coupon-select
           for couponOption in coupons
             option(value=couponOption.id selected=coupon===couponOption.id)= couponOption.format
-
+    button#save-changes.btn.btn-primary Save Changes
+    
+  h3 Grant Prepaid for Courses
+  #prepaid-form.form
+    if view.state === 'creating-prepaid'
+      .progress.progress-striped.active
+        .progress-bar(style="width: 100%")
+      
+    else if view.state === 'made-prepaid'
+      .alert.alert-success Prepaid created!
+      
+    else
+      .form-group
+        label Seats
+        input#seats-input.form-control(type="number")
+      .form-group
+        button#add-seats-btn.btn.btn-primary Add Seats
+            
 block modal-footer-content
-  button#save-changes.btn.btn-primary Save Changes
+  
 

app/views/admin/AdministerUserModal.coffee

@@ -1,6 +1,7 @@
 ModalView = require 'views/core/ModalView'
 template = require 'templates/admin/administer-user-modal'
 User = require 'models/User'
+Prepaid = require 'models/Prepaid'
 
 module.exports = class AdministerUserModal extends ModalView
   id: "administer-user-modal"
@@ -9,6 +10,7 @@ module.exports = class AdministerUserModal extends ModalView
 
   events:
     'click #save-changes': 'onSaveChanges'
+    'click #add-seats-btn': 'onClickAddSeatsButton'
 
   constructor: (options, @userHandle) ->
     super(options)
@@ -58,3 +60,18 @@ module.exports = class AdministerUserModal extends ModalView
     options = {}
     options.success = => @hide()
     @user.patch(options)
+
+  onClickAddSeatsButton: ->
+    maxRedeemers = parseInt(@$('#seats-input').val())
+    return unless maxRedeemers and maxRedeemers > 0
+    prepaid = new Prepaid({
+      maxRedeemers: maxRedeemers
+      type: 'course'
+      creator: @user.id
+    })
+    prepaid.save()
+    @state = 'creating-prepaid'
+    @renderSelectors('#prepaid-form')
+    @listenTo prepaid, 'sync', ->
+      @state = 'made-prepaid'
+      @renderSelectors('#prepaid-form')

server/prepaids/Prepaid.coffee

@@ -1,6 +1,8 @@
 mongoose = require 'mongoose'
 config = require '../../server_config'
-PrepaidSchema = new mongoose.Schema {}, {strict: false, minimize: false,read:config.mongo.readpref}
+PrepaidSchema = new mongoose.Schema {
+  creator: mongoose.Schema.Types.ObjectId
+}, {strict: false, minimize: false,read:config.mongo.readpref}
 
 PrepaidSchema.index({code: 1}, { unique: true })
 PrepaidSchema.index({'redeemers.userID': 1})
@@ -16,10 +18,19 @@ PrepaidSchema.statics.generateNewCode = (done) ->
   
 PrepaidSchema.pre('save', (next) ->
   @set('exhausted', @get('maxRedeemers') <= _.size(@get('redeemers')))
-  next()
+  if not @get('code')
+    Prepaid.generateNewCode (code) =>
+      @set('code', code)
+      next()
+  else
+    next()
 )
 
 PrepaidSchema.post 'init', (doc) ->
   doc.set('maxRedeemers', parseInt(doc.get('maxRedeemers')))
 
+PrepaidSchema.statics.postEditableProperties = [
+  'creator', 'maxRedeemers', 'type'
+]
+
 module.exports = Prepaid = mongoose.model('prepaid', PrepaidSchema)

server/prepaids/prepaid_handler.coffee

@@ -242,5 +242,10 @@ PrepaidHandler = class PrepaidHandler extends Handler
         return @sendSuccess(res, (@formatEntity(req, prepaid) for prepaid in prepaids))
     else
       super(arguments...)
+
+  makeNewInstance: (req) ->
+    prepaid = super(req)
+    prepaid.set('redeemers', [])
+    return prepaid
       
 module.exports = new PrepaidHandler()