Add validation to background field

server/api/models/Project.js

@@ -5,7 +5,40 @@
  * @docs        :: https://sailsjs.com/docs/concepts/models-and-orm/models
  */
 
+const BACKGROUND_TYPES = ['gradient', 'image'];
+
+const BACKGROUND_GRADIENTS = [
+  'old-lime',
+  'ocean-dive',
+  'tzepesch-style',
+  'jungle-mesh',
+  'strawberry-dust',
+  'purple-rose',
+  'sun-scream',
+  'warm-rust',
+  'sky-change',
+  'green-eyes',
+  'blue-xchange',
+  'blood-orange',
+  'sour-peel',
+  'green-ninja',
+  'algae-green',
+  'coral-reef',
+  'steel-grey',
+  'heat-waves',
+  'velvet-lounge',
+  'purple-rain',
+  'blue-steel',
+  'blueish-curve',
+  'prism-light',
+  'green-mist',
+  'red-curtain',
+];
+
 module.exports = {
+  BACKGROUND_TYPES,
+  BACKGROUND_GRADIENTS,
+
   attributes: {
     //  ╔═╗╦═╗╦╔╦╗╦╔╦╗╦╦  ╦╔═╗╔═╗
     //  ╠═╝╠╦╝║║║║║ ║ ║╚╗╔╝║╣ ╚═╗