feat(single-select): add option to force array output for single-sele…

…ct mode

src/model/config.model.ts

@@ -27,6 +27,8 @@ export class ConfigInstance {
   hideCheckboxes: boolean = false;
   /** single or multiple select */
   multiple: boolean = true;
+  /** force ngModel to be an array for single select too */
+  forceArrayOutput = false;
   /** disable user interaction */
   disabled: boolean = false;
   /** all the configuration for the header (visible if dropdown closed) */

src/w11k-select.directive.ts

@@ -522,7 +522,7 @@ export function w11kSelect (w11kSelectConfig: Config,
 
           let modelValue;
 
-          if (scope.config.multiple) {
+          if (scope.config.multiple || scope.config.forceArrayOutput) {
             modelValue = viewValue;
           } else {
             modelValue = viewValue[0];
@@ -531,12 +531,18 @@ export function w11kSelect (w11kSelectConfig: Config,
           return modelValue;
         }
 
-        function validateRequired(viewValue) {
-          if (scope.config.multiple === true && scope.config.required === true && viewValue.length === 0) {
-            return false;
-          }
-          if (scope.config.multiple === false && scope.config.required === true && viewValue === undefined) {
-            return false;
+        function validateRequired (value): boolean {
+          if (scope.config.required) {
+            if (scope.config.multiple === true && value.length === 0) {
+              return false;
+            }
+            if (scope.config.multiple === false && scope.config.forceArrayOutput === true && value.length === 0) {
+              return false;
+            }
+            if (scope.config.multiple === false && value === undefined) {
+              return false;
+            }
+
           }
 
           return true;