# Behaelter Numbers Backend Edit Fix This document describes the changes made to fix the backend edit functionality for the `behaelter_numbers` field in the `tl_vr_wa_reservation` table. ## Issue Description The backend edit functionality for the `behaelter_numbers` field was not handling the new data format correctly, which was causing errors. The new data format stores both the behaelter number and the associated member number, while the old format only stored the behaelter numbers. ## Changes Made ### 1. WeinanlieferungReservationContainerListener.php #### onBehaelterNumbersLoadCallback The `onBehaelterNumbersLoadCallback` method was updated to handle the new data format: - It now checks if the data is in the new format (array of objects with behaelter and member) - If it's the new format, it extracts just the behaelter numbers for display in the backend - If it's the old format, it continues to work as before - This ensures that the backend edit form displays just the behaelter numbers as a comma-separated list, regardless of the data format #### onBehaelterNumbersSaveCallback The `onBehaelterNumbersSaveCallback` method was updated to handle the new data format: - It now properly handles both the old and new formats when checking used numbers from existing reservations - It preserves member information when saving by: - Checking if the original value is in the new format - Creating a map of behaelter number to member number from the original data - Getting the member associated with the reservation as a fallback - Creating a new data structure that preserves the member information for existing behaelter numbers and uses the default member number for new ones - This ensures that member information is not lost when editing behaelter numbers in the backend ## Data Structure The `behaelter_numbers` field now stores a JSON-encoded array of objects, each with: - `behaelter`: The behaelter number - `member`: The associated member number Example: ```json [ { "behaelter": "123", "member": "456" }, { "behaelter": "789", "member": "456" } ] ``` ## Backward Compatibility The implementation maintains backward compatibility with existing data: - If the `behaelter_numbers` field contains the old format (simple array of behaelter numbers), it's automatically handled correctly - When saving, the old format is converted to the new format, with all behaelters associated with the booking member's number ## Testing The changes were tested with both the old and new data formats to ensure: - The backend edit form displays just the behaelter numbers as a comma-separated list - Member information is preserved when saving - Validation of behaelter numbers works correctly - The implementation handles both formats correctly when checking used numbers