add column to JSON view

packages/datalib/src/CollectionGridDisplay.ts

@@ -70,9 +70,14 @@ function getDisplayColumn(basePath, columnName, display) {
 
 export function analyseCollectionDisplayColumns(rows, display) {
   const res = [];
+  const addedColumns = display?.config?.addedColumns;
   for (const row of rows || []) {
     getColumnsForObject([], row, res, display);
   }
+  for (const added of addedColumns || []) {
+    if (res.find(x => x.uniqueName == added)) continue;
+    res.push(getDisplayColumn([], added, display));
+  }
   return (
     res.map(col => ({
       ...col,

packages/datalib/src/GridDisplay.ts

@@ -92,6 +92,10 @@ export abstract class GridDisplay {
     }
   }
 
+  addDynamicColumn(name: string) {
+    this.includeInColumnSet('addedColumns', name, true);
+  }
+
   focusColumn(uniqueName: string) {
     this.setConfig(cfg => ({
       ...cfg,