fix(nocodb): prevent column deletion if it is used in a calendar view

packages/nocodb/src/models/CalendarRange.ts

@@ -112,4 +112,30 @@ export default class CalendarRange implements CalendarRangeType {
 
     return data && new CalendarRange(data);
   }
+
+  public static async IsColumnBeingUsedAsRange(
+    columnId: string,
+    ncMeta = Noco.ncMeta,
+  ) {
+    return (
+      (
+        await ncMeta.metaList2(null, null, MetaTable.CALENDAR_VIEW_RANGE, {
+          xcCondition: {
+            _or: [
+              {
+                fk_from_column_id: {
+                  eq: columnId,
+                },
+              },
+              {
+                fk_to_column_id: {
+                  eq: columnId,
+                },
+              },
+            ],
+          },
+        })
+      ).length > 0
+    );
+  }
 }

packages/nocodb/src/services/columns.service.ts

@@ -25,6 +25,7 @@ import type CustomKnex from '~/db/CustomKnex';
 import type SqlClient from '~/db/sql-client/lib/SqlClient';
 import type { BaseModelSqlv2 } from '~/db/BaseModelSqlv2';
 import type { NcRequest } from '~/interface/config';
+import { CalendarRange } from '~/models';
 import { AppHooksService } from '~/services/app-hooks/app-hooks.service';
 import formulaQueryBuilderv2 from '~/db/formulav2/formulaQueryBuilderv2';
 import ProjectMgrv2 from '~/db/sql-mgr/v2/ProjectMgrv2';
@@ -2264,6 +2265,15 @@ export class ColumnsService {
         }
         /* falls through to default */
       }
+      case UITypes.DateTime:
+      case UITypes.Date: {
+        if (await CalendarRange.IsColumnBeingUsedAsRange(column.id, ncMeta)) {
+          NcError.badRequest(
+            `The column '${column.column_name}' is being used in Calendar View. Please delete Calendar View first.`,
+          );
+        }
+        break;
+      }
 
       // on deleting created/last modified columns, keep the column in table and delete the column from meta
       case UITypes.CreatedTime: