Preserve members and labels when transfer card to another board

server/api/helpers/get-label-ids-for-card.js

@@ -0,0 +1,17 @@
+module.exports = {
+  inputs: {
+    id: {
+      type: 'json',
+      custom: (value) => _.isString(value) || _.isArray(value),
+      required: true,
+    },
+  },
+
+  async fn(inputs, exits) {
+    const cardLabels = await sails.helpers.getCardLabelsForCard(inputs.id);
+
+    const labelIds = sails.helpers.mapRecords(cardLabels, 'labelId', _.isArray(inputs.id));
+
+    return exits.success(labelIds);
+  },
+};