Merge area17#670: Fix Multi select field doesn't prevent user from pi…

…cking duplicated option

Update distributed assets

dist/assets/admin/twill-manifest.json

@@ -12,19 +12,19 @@
   "Inter-Regular.woff": "/assets/admin/fonts/Inter-Regular.aebfbb3c.woff",
   "Inter-Regular.woff2": "/assets/admin/fonts/Inter-Regular.bffaed79.woff2",
   "chunk-common.css": "/assets/admin/css/chunk-common.f96d24c0.css",
-  "chunk-common.js": "/assets/admin/js/chunk-common.81774312.js",
+  "chunk-common.js": "/assets/admin/js/chunk-common.b6c4ec97.js",
   "chunk-vendors.css": "/assets/admin/css/chunk-vendors.e0f3ef32.css",
   "chunk-vendors.js": "/assets/admin/js/chunk-vendors.aa8e5164.js",
   "icons-files.svg": "/assets/admin/icons/icons-files.3cdbddfb2725088d.svg",
   "icons-wysiwyg.svg": "/assets/admin/icons/icons-wysiwyg.63f0e2d625dc615e.svg",
   "icons.svg": "/assets/admin/icons/icons.2ee8758aafe79e18.svg",
   "main-buckets.css": "/assets/admin/css/main-buckets.b3760912.css",
-  "main-buckets.js": "/assets/admin/js/main-buckets.3d6452dd.js",
+  "main-buckets.js": "/assets/admin/js/main-buckets.35c291fc.js",
   "main-dashboard.css": "/assets/admin/css/main-dashboard.27f5455a.css",
-  "main-dashboard.js": "/assets/admin/js/main-dashboard.19416c7e.js",
+  "main-dashboard.js": "/assets/admin/js/main-dashboard.aaca0931.js",
   "main-form.css": "/assets/admin/css/main-form.96525dd9.css",
-  "main-form.js": "/assets/admin/js/main-form.60c04e5c.js",
+  "main-form.js": "/assets/admin/js/main-form.39aa8e28.js",
   "main-free.js": "/assets/admin/js/main-free.6761fc8a.js",
   "main-listing.css": "/assets/admin/css/main-listing.77e7845a.css",
-  "main-listing.js": "/assets/admin/js/main-listing.b1f6f49e.js"
+  "main-listing.js": "/assets/admin/js/main-listing.f521581b.js"
 }

frontend/js/components/VSelect/ExtendedVSelect.vue

@@ -79,6 +79,20 @@
           // eslint-disable-next-line no-return-assign
           return this.multiple ? this.mutableValue.pop() : this.mutableValue = null
         }
+      },
+      /**
+       * Check if the given option is currently selected.
+       * @param  {Object|String}  option
+       * @return {Boolean}        True when selected | False otherwise
+       * https://github.com/sagalbot/vue-select/commit/8a601c0ac3311adb89bc6e31b8cf215b1343d93c
+       */
+      isOptionSelected (option) {
+        return this.valueAsArray.some(value => {
+          if (typeof value === 'object') {
+            return this.optionObjectComparator(value, option)
+          }
+          return value === option || value === option[this.index]
+        })
       }
     },
     mounted () {