Merge branch 'issue/74' into 'develop'

Issue #74: Fix validation on backend

Closes #74

See merge request !73

src/utils/validationHandler.ts

@@ -166,6 +166,19 @@ export class ValidationHandler {
     private static validateInput(input: Input, inputAnswers: InputAnswerDict): string {
         const errors: string[] = [];
 
+        let inputMandatory: boolean = false;
+
+        for (const val of input.validation) {
+            if (val.type === ValidationType.MANDATORY) {
+                inputMandatory = true;
+                break;
+            }
+        }
+
+        if ((inputAnswers[input.id] === undefined || inputAnswers[input.id][0].value === "") && !(inputMandatory)) {
+            return;
+        }
+
         for (const validation of input.validation) {
 
             switch (validation.type) {