Fix field pre-filling issues

Author: spinn

src/components/QuestionTypes/BaseType.vue

@@ -36,7 +36,7 @@
     },
     mounted() {
       if (this.question.answer) {
-        this.dataValue = this.question.answer
+        this.dataValue = this.answer = this.question.answer
       } else if (this.question.multiple) {
         this.dataValue = []
       }

src/components/QuestionTypes/MultipleChoiceType.vue

@@ -70,8 +70,15 @@
     },
 
     mounted() {
-      if (this.question.multiple) {
-        this.dataValue = []
+      if (this.question.answer) {
+        // Set initial answer when we have one
+        this.question.options.forEach(o => {
+          const optionValue = o.choiceValue()
+
+          if (this.question.answer === optionValue || (Array.isArray(this.question.answer) && this.question.answer.indexOf(optionValue) !== -1)) {
+            this.toggleAnswer(o)
+          }
+        })
       }
 
       this.addKeyListener()

src/models/QuestionModel.js

@@ -124,8 +124,8 @@ export default class QuestionModel {
       this.placeholder = 'yyyy-mm-dd'
     }
 
-    if (this.multiple) {
-      this.answer = []
+    if (this.multiple && !Array.isArray(this.answer)) {
+      this.answer = this.answer ? [this.answer] : []
     }
   }