Added new columns to dashboard table

pkg/services/sqlstore/migrations/dashboard_mig.go

@@ -92,4 +92,14 @@ func addDashboardMigration(mg *Migrator) {
 		Sqlite("SELECT 0 WHERE 0;").
 		Postgres("SELECT 0;").
 		Mysql("ALTER TABLE dashboard MODIFY data MEDIUMTEXT;"))
+
+  // add column to store creator of a dashboard
+  mg.AddMigration("Add column created_by", NewAddColumnMigration(dashboardV2, &Column{
+    Name: "created_by", Type: DB_BigInt, Nullable: true,
+  }))
+
+  // add column to store updater of a dashboard
+  mg.AddMigration("Add column updated_by", NewAddColumnMigration(dashboardV2, &Column{
+    Name: "updated_by", Type: DB_BigInt, Nullable: true,
+  }))
 }

pkg/services/sqlstore/migrator/migrations.go

@@ -64,6 +64,10 @@ type AddColumnMigration struct {
 	column    *Column
 }
 
+func NewAddColumnMigration(table Table, col *Column) *AddColumnMigration {
+  return &AddColumnMigration{tableName: table.Name, column: col}
+}
+
 func (m *AddColumnMigration) Table(tableName string) *AddColumnMigration {
 	m.tableName = tableName
 	return m