Fix validation for arrays

Author: spinn

src/components/QuestionTypes/BaseType.vue

@@ -31,7 +31,7 @@
         allowedChars: null,
         alwaysAllowedKeys: ['ArrowLeft', 'ArrowRight', 'Delete', 'Backspace'],
         focused: false,
-        canReceiveFocus: false,
+        canReceiveFocus: false
       }
     },
     mounted() {
@@ -166,6 +166,11 @@
             return v.trim().length > 0
           }
 
+          if (Array.isArray(v)) {
+            // Don't allow empty arrays
+            return v.length > 0
+          }
+
           // All other non-null values are allowed to pass through
           return true
         }

src/components/QuestionTypes/MultipleChoiceType.vue

@@ -54,36 +54,39 @@
   export default {
     extends: BaseType,
     name: QuestionType.MultipleChoice,
+
     data() {
       return {
         editingOther: false
       }
     },
+
     mounted() {
       if (this.question.multiple) {
         this.dataValue = []
       }
 
       this.addKeyListener()
     },
+
     beforeDestroy() {
       this.removeKeyListener()
     },
+
     watch: {
       active(value) {
         if (value) {
           this.addKeyListener()
 
-          if (this.question.multiple) {
-            if (this.question.answered) {
-              this.enterPressed = false
-            }
+          if (this.question.multiple && this.question.answered) {
+            this.enterPressed = false
           }
         } else {
           this.removeKeyListener()
         }
       }
     },
+    
     methods: {
       addKeyListener() {
         this.removeKeyListener()