feat: Version 2

Closes #627, closes #1047

server/api/helpers/utils/map-records.js

@@ -1,4 +1,7 @@
-const recordsValidator = (value) => _.isArray(value);
+/*!
+ * Copyright (c) 2024 PLANKA Software GmbH
+ * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
+ */
 
 module.exports = {
   sync: true,
@@ -6,7 +9,6 @@ module.exports = {
   inputs: {
     records: {
       type: 'ref',
-      custom: recordsValidator,
       required: true,
     },
     attribute: {
@@ -17,14 +19,23 @@ module.exports = {
       type: 'boolean',
       defaultsTo: false,
     },
+    withoutNull: {
+      type: 'boolean',
+      defaultsTo: false,
+    },
   },
 
   fn(inputs) {
     let result = _.map(inputs.records, inputs.attribute);
+
     if (inputs.unique) {
       result = _.uniq(result);
     }
 
+    if (inputs.withoutNull) {
+      result = _.without(result, null);
+    }
+
     return result;
   },
 };