Añadida comprobación de los valores de meta_stu en la creación de un estudiante

sails/src/api/models/Student.js

-/* global sails */
+/* global sails, MetaStu */
+
+const bcrypt = require('bcrypt-nodejs')
 
 /**
 *  student.js
@@ -95,67 +97,51 @@ module.exports = {
       collection: "StuPicto",
       via: "student"
     },
-
-    toJSON: function () {
-      var student = this.toObject();
-      student.pic = sails.config.pictogram.urls.getStudentAvatarUrl(student.pic);
-      delete student.password;
-      return student;
-    },
   },
 
+  toJSON: function () {
+    var student = this.toObject();
+    student.pic = sails.config.pictogram.urls.getStudentAvatarUrl(student.pic);
+    delete student.password;
+    return student;
+  },
 
-  //
-  // Model hook for storing default configuration adding a new account
-  //
-  beforeCreate: function(attrs, next) {
-
-    MetaStu.find().exec(function(err, metaStu) {
+  /**
+   * Checks the given attributes before creating a new Student
+   * @param  {Object} attrs All student properties to be stored
+   * @param  {Function} next Function to be executed when the check process
+   *                         has been completed (an error object will be passed
+   *                         to the function if necesary)
+   */
+  beforeCreate: function (attrs, next) {
+    MetaStu.find().then(function (metaAttributes) {
+      var attributeValue;
+      var attributeDomains = {};
+      var validAttributes = {};
+
+      metaAttributes.forEach((metaAttribute) => {
+        validAttributes[metaAttribute.name] = metaAttribute.default_val;
+        attributeDomains[metaAttribute.name] = metaAttribute.domain.split(',');
+      });
 
-      if (err || !metaStu || metaStu.length == 0)
-        return next(err);
-      /* Default Configuration:
-            var configuration = {
-            "categories":"on",
-            "input_feedback":{"vibration":true,"click":false,"read":false,"highlight":false},
-            "input_selection":"drag",
-            "pictogram_size":"normal",
-            "tts_engine":"IVONA Text-to-Speech HQ",
-            "tts_voice":"child", -- NO USADO
-            "picto_select":"enlarge", -- NO USADO
-            "legend":"yes",
-            "legendsize":"50",
-            "animation":"yes", -- NO USADO
-            "tts_options":{phrase":true},
-            "picto_background":"#000000",
-            "phrase_background":"#ff0000"};
-
-      */
-      var configuration = [];
-      // The default configuration is built by meta_stu fields and its default values
-      for (var i = 0; i < metaStu.length; i++) {
-          configuration.push('"' + metaStu[i].name + '":' + metaStu[i].default_val);
+      attrs.attributes.keys().forEach((attributeKey) => {
+        attributeValue = attrs.attributes[attributeKey];
+        if (attributeDomains[attributeKey] &&
+            attributeDomains[attributeKey].indexOf(attributeValue) !== -1) {
+          validAttributes[attributeKey] = attributeValue;
+        } else {
+          sails.log.error(`Received invalid attribute \
+            ${attributeKey} with value "${attributeValue}`);
         }
-
-      attrs.attributes = JSON.parse("{" + configuration.toString() + "}");
-      //attrs.attributes = "{" + configuration.toString() + "}";
-      //console.log(attrs.attributes);
-
-      //
-      // Encrypt password before insertion
-      //
-      var bcrypt = require('bcrypt-nodejs');
-
-      bcrypt.genSalt(10, function(err, salt) {
-        if (err)
-          return next(err);
-        bcrypt.hash(attrs.password, salt, null, function(err, hash) {
-          if (err)
-            return next(err);
-          attrs.password = hash;
-          next();
-        });
       });
+
+      attrs.password = bcrypt.hashSync(attrs.password, bcrypt.genSaltSync());
+    }).catch((error) => {
+      if (error) {
+        next(error);
+      } else {
+        next(new Error());
+      }
     });
   },