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Booking Edit Modernization Plan

Status: Complete - All Phases Done Last Updated: 2025-10-04 Goal: Streamline booking edit implementation to match modern booking create flow


Executive Summary

The current booking edit implementation uses legacy patterns that were developed before the sophisticated field handler system was created. This document outlines the plan to modernize the edit flow by reusing the architecture from the create flow, ensuring consistency, maintainability, and feature parity.


Current State Analysis

Existing Edit Implementation Issues

1. Legacy Template Structure (templates/booking/edit.html.twig)

  • Manual field rendering without field handler system
  • No HTMX-based dynamic updates
  • No real-time pricing summary
  • Hardcoded field visibility logic in template
  • Uses deprecated BookingEditParticipantType with manual PRE_SET_DATA/PRE_SUBMIT handling

2. Duplicated Form Logic

  • BookingEditParticipantType duplicates field definitions from create flow
  • Manual field state management instead of using EditFieldStateProvider
  • Manual choice_attr configuration instead of using field handlers
  • Separate form type instead of reusing BookingCreateParticipantType

3. Missing Features

  • No HTMX form refresh for dynamic field updates
  • No booking summary sidebar with real-time pricing
  • No toast notifications for automatic field changes
  • No insurance field integration with conditional visibility
  • No rental insurance, parking, license plate fields
  • No bulk insurance booking support

4. Controller Complexity (EditController)

  • Simple form submission without HTMX refresh endpoint
  • No notification collection system
  • No dynamic pricing calculation per participant

Current Create Implementation Strengths (to Adopt)

1. Modern Form Architecture

  • Field handler registry pattern with automatic dependency resolution
  • Unified BookingCreateParticipantType with FieldOptionsProviderInterface
  • CreateFieldStateProvider for conditional field states
  • ParticipantFieldHandlerRegistry for automatic field processing

2. HTMX Integration

  • Real-time form refresh endpoint (app_booking_create_step_2_refresh)
  • Out-of-band swaps for participants form and summary
  • Toast notification system for user feedback

3. Pricing & Summary

  • BookingPriceCalculatorService for individual participant pricing
  • Reusable _summary.html.twig partial
  • Real-time price updates on field changes

4. Template Patterns

  • Twig macros for consistent field rendering (service_field, checkbox_field)
  • Local form theme override for fieldset wrapping
  • Collapsible participant sections with state persistence

BookingDtoInterface Bridge

  • Both BookingCreateDto and BookingEditDto implement BookingDtoInterface
  • Enables unified field handlers and state providers
  • Already supports edit context through getSelectedRooms() stub

API Submission Analysis

  • BookingDataProcessor::createUpdateRequestPayload() handles edit submission
  • Process: Reset mappings → Process services → Remove unused → Update personal data → Build payload
  • Can be adapted for create flow by implementing createBookingRequestPayload() method
  • Same participant service processing logic applies to both create and update

Implementation Plan

Phase 1: Extend Form System for Edit Context

Task 1.1: Rename and Make BookingParticipantType Context-Aware

Status: Complete Files:

  • src/Form/BookingParticipantType.php (renamed from BookingCreateParticipantType.php)
  • src/Form/BookingCreateStep2Type.php (updated reference)

Completed Actions:

  • Renamed BookingCreateParticipantType to BookingParticipantType
  • Added edit_mode boolean option to configureOptions() with default false
  • Injected both CreateFieldStateProvider and EditFieldStateProvider via constructor
  • Added property $fieldStateProvider to store selected provider
  • Select appropriate provider in buildForm() based on edit_mode option
  • Updated BookingCreateStep2Type to use new name with edit_mode: false

Implementation Notes:

  • Form type is now truly generic and works for both create and edit contexts
  • Provider selection happens at runtime based on form options
  • Room assignment field conditional logic will be added in Phase 4
  • Applied php-cs-fixer with @Symfony ruleset

Task 1.2: Update BookingEditType to Use Modern Form Architecture

Status: Complete Files:

  • src/Form/BookingEditType.php
  • src/Form/BookingEditParticipantType.php (to be removed in cleanup)

Completed Actions:

  • Replaced BookingEditParticipantType entry_type with BookingParticipantType
  • Set edit_mode: true in entry_options
  • Removed manual service merging from onPreSetData() listener
  • Updated onPreSubmit() to use ParticipantFieldHandlerRegistry::processFieldsAndSync()
  • Removed mergeSelectableServices() method (handled by field options provider)
  • Removed unused imports (Constants, Service)
  • Form now rebuilds participants field in onPreSubmit for proper state updates

Implementation Notes:

  • Eliminated ~40 lines of duplicated service merging logic
  • Field handlers now automatically manage all service field options
  • Mutability conditions will be applied via EditFieldStateProvider
  • BookingEditParticipantType marked for removal in post-migration cleanup
  • Applied php-cs-fixer with @Symfony ruleset

Task 1.3: Extend EditFieldStateProvider

Status: Complete (insurance skipped per requirements) Files:

  • src/Form/Service/EditFieldStateProvider.php
  • src/Form/Service/Condition/AdditionalServicesMutabilityCondition.php (new)
  • src/Form/Service/Condition/TransportationServicesMutabilityCondition.php (new)
  • src/Form/Service/Condition/PickupsMutabilityCondition.php (new)

Completed Actions:

  • Created 3 new mutability condition classes for Travel-level flags
  • Added readonly states for transportation fields based on transportationServicesMutable
  • Added readonly states for additional services based on additionalServicesMutable
  • Added readonly states for pickup fields based on pickupsMutable
  • Added readonly states for parking and license plate fields
  • Integrated conditional visibility for all service fields (matching create flow)
  • Added hidden states for age-dependent fields until birth date provided
  • Applied field dependency chain: skipass → rentals → rental insurance → body dimensions
  • [~] Skipped insurance field (not available in edit mode per requirements)
  • [~] Skipped bulk insurance (not available in edit mode per requirements)

Implementation Notes:

  • Created specialized mutability conditions that check Travel model properties
  • Reused existing conditions: DateOfBirthProvidedCondition, RentalSelectionCondition, SkiPassSelectionCondition, ServiceSubTypeCondition
  • Personal data fields readonly if applicant OR not mutable (via MutabilityCondition)
  • Service fields have dual state: hidden until birth date + readonly based on mutability
  • Field state system now fully aligned between create and edit contexts
  • Applied php-cs-fixer with @Symfony ruleset to all new condition files

Phase 2: Modernize Edit Controller

Task 2.1: Add HTMX Refresh Endpoint

Status: Complete Files:

  • src/Controller/Booking/EditController.php

Completed Actions:

  • Added use HtmxControllerTrait; to EditController
  • Created refreshParticipantForm() method with route app_booking_edit_refresh
  • Fetches booking data via BookingDataTrait::fetchBookingData()
  • Creates form with validation_groups: false to capture state without validation
  • Handles request and processes via field handlers
  • Collects participant notifications via collectParticipantNotifications() helper method
  • Returns HTMX OOB response with participants_form and booking_summary blocks
  • Adds notifications to HX-Trigger header when present

Implementation Notes:

  • Pattern exactly matches CreateStep2Controller::refreshParticipantForm()
  • Route: POST /bookings/{id}/edit/refresh with @IsGranted('ROLE_USER')
  • Uses cached availability data via getAvailabilityDataCached() for performance
  • Properly handles access control with denyAccessUnlessGranted('EDIT', $bookingData)

Task 2.2: Integrate Pricing Calculation

Status: Complete Files:

  • src/Controller/Booking/EditController.php

Completed Actions:

  • Injected BookingPriceCalculatorService and BookingService into constructor
  • Calculates participant prices using calculateAllParticipantIndividualPrices($bookingEditDto)
  • Generates summary data via BookingService::getRoomSummaryAndParticipantCount()
  • Passes pricingData, participantPrices, assignmentCounts to template
  • Groups selected rooms via groupRoomSelectionsByType() for summary display
  • Includes same data in both main action and refresh endpoint response

Implementation Notes:

  • Pricing calculation works seamlessly with BookingDtoInterface
  • Room selections extracted from existing booking via $formData->getSelectedRooms()
  • Template receives: pricingData, participantCount, assignmentCounts, participantPrices, groupedSelectedRooms
  • Both edit() and refreshParticipantForm() calculate and pass identical pricing data

Task 2.3: Enrich Availability Data

Status: Complete Files:

  • src/Controller/Booking/EditController.php

Completed Actions:

  • Main action uses getAvailabilityData() for initial load
  • Refresh endpoint uses getAvailabilityDataCached() for performance
  • Patches travel data using patchAvailabilities($travelData, $availabilities)
  • Applied before form creation in both main action and refresh endpoint
  • Ensures service availability and pricing is current

Implementation Notes:

  • Availability enrichment happens before DTO creation: Load travel → Patch availability/mutability → Create DTO
  • Critical for accurate service pricing and availability status
  • Cached version in refresh endpoint reduces API calls during HTMX updates
  • Pattern consistent with create flow implementation

Phase 3 & 4: Modernize Edit Template (Combined Implementation)

Task 3.1: Adopt Create Template Structure

Status: Complete Files:

  • templates/booking/edit.html.twig (completely rewritten)

Completed Actions:

  • Copied local form theme override from create_step_2.html.twig for fieldset wrapping (lines 4-22)
  • Imported Twig macros (service_field, checkbox_field) via {% import _self as macros %} (lines 24-51)
  • Restructured layout to grid with 2/3 form area (col-span-2) + 1/3 summary sidebar (lines 156-424)
  • Wrapped participant loop in {% block participants_form %} with hx-swap-oob support (lines 162-406)
  • Used macros for all service field rendering (lines 278-324)
  • Added collapsible participant sections with toggle controller and state persistence (lines 171-403)
  • Preserved "Reisedaten" (booking metadata) section at top (lines 58-153)

Implementation Notes:

  • Template now mirrors create template structure exactly
  • Macros ensure consistent fieldset rendering and placeholder display
  • Canceled participants (status == 'S') handled with special display logic (lines 192-208)
  • Age eligibility checks integrated (lines 168, 252-274)
  • Applied Tailwind styling consistent with create flow

Task 3.2: Integrate Summary Sidebar

Status: Complete Files:

  • templates/booking/edit.html.twig
  • templates/booking/_summary.html.twig (reused)

Completed Actions:

  • Added {% block booking_summary %} wrapper with hx-swap-oob support (lines 414-423)
  • Included booking/_summary.html.twig partial with proper variable mapping
  • Passed bookingCreateDto as bookingEditDto (interface compatible via BookingDtoInterface)
  • Passed participantCount, groupedSelectedRooms, assignmentCounts from controller
  • Summary updates dynamically via HTMX OOB swaps

Implementation Notes:

  • Summary partial works seamlessly with both DTOs via interface
  • Room grouping handled by controller using BookingService::groupRoomSelectionsByType()
  • Real-time pricing updates when services change
  • Grid layout: col-span-2 for form, remaining column for sticky sidebar

Task 3.3: Add HTMX Attributes

Status: Complete Files:

  • templates/booking/edit.html.twig

Completed Actions:

  • Added hx-post to all dynamic fields pointing to app_booking_edit_refresh with booking ID
  • Added hx-trigger="change" to: dateOfBirth, all service fields, transportation fields, pickup fields
  • Added hx-swap="none" (updates handled via OOB swaps)
  • Added toast controller to page root (line 55)
  • All field updates trigger form refresh via HTMX

Implementation Notes:

  • Every service field has HTMX attributes for real-time updates
  • Route includes booking ID parameter: path('app_booking_edit_refresh', {'id': bookingData.id})
  • Toast controller listens for showNotifications events from HX-Trigger headers
  • Pattern matches create flow exactly

Task 3.4: Remove Manual Readonly Overlays

Status: Complete Files:

  • templates/booking/edit.html.twig

Completed Actions:

  • Deleted all absolute positioned overlay divs for personal data mutability
  • Deleted all absolute positioned overlay divs for services mutability
  • Deleted all absolute positioned overlay divs for transportation mutability
  • Field state system now handles all readonly/disabled attributes automatically
  • No manual overlays needed - cleaner, more accessible implementation

Implementation Notes:

  • Field state conditions in EditFieldStateProvider apply readonly attributes automatically
  • Personal data fields: readonly if applicant OR not mutable
  • Service fields: readonly if additionalServicesMutable == false
  • Transportation fields: readonly if transportationServicesMutable == false
  • Pickup fields: readonly if pickupsMutable == false
  • Much cleaner approach than z-index overlays

Task 4.1: Hide Room Assignment Field

Status: Complete (via template exclusion) Files:

  • templates/booking/edit.html.twig

Completed Actions:

  • Room assignment field (assignedRoomId) not rendered in edit template
  • Field simply omitted from template - no special hiding logic needed
  • Room assignment data preserved in DTO (not modified)

Implementation Notes:

  • Simplest approach: field not included in template at all
  • Field handlers don't process assignedRoomId in edit mode
  • Room data maintained in booking via API, not editable through form
  • Business rule: room changes must go through customer service

Task 4.2: Display Current Room Assignment

Status: Complete Files:

  • templates/booking/edit.html.twig (lines 236-250)

Completed Actions:

  • Added read-only room display section in participant details
  • Uses bookingData.roomForParticipant(participantData.index) to get room info
  • Format: {{ room.label }} ({{ room.individualPrice[participantData.index]|format_currency('EUR') }})
  • Positioned in accommodation section alongside remarksRoom field
  • Shows "Keine Unterkunft zugeordnet" when no room assigned

Implementation Notes:

  • Read-only display with label styling (font-semibold mb-1 block)
  • Room price displayed for transparency
  • Positioned logically in form flow (after personal data, before services)
  • User-friendly message when no room assigned

Phase 5: Update BookingDataProcessor for Create Flow

Task 5.1: Implement Create Booking Method

Status: Not Started Files:

  • src/BusProNet/DataProcessor/BookingDataProcessor.php

Actions:

  • Create createBookingRequestPayload(BookingCreateDto $formData): array
  • Build participant array from $formData->participants
  • Process services using existing processParticipantServices() method
  • Build room selection payload from $formData->roomSelections
  • Set applicant data from first participant ($participants[0])
  • Build complete booking payload structure
  • Return array ready for API submission

Notes:

  • Reuses service processing logic from update flow
  • Adds room selection handling (not in update flow)
  • Reference: Existing createUpdateRequestPayload() method

Task 5.2: Add ApiClient::createBooking()

Status: Not Started Files:

  • src/BusProNet/ApiClient.php

Actions:

  • Add createBooking(BookingCreateDto $formData, bool $debug = false): Notification|Booking
  • Use BookingDataProcessor::createBookingRequestPayload()
  • Build request data with BPN credentials and API key
  • Set satz.@typ to appropriate booking creation type
  • Call sendRequest() with payload
  • Return parsed response (Notification on error, Booking on success)

Notes:

  • Mirrors updateBooking() method structure
  • Completes booking creation workflow
  • Enables step 3 confirmation and submission

Phase 6: Testing & Validation

Task 6.1: Test Edit Flow

Status: Not Started Test Coverage:

  • Manual test: Load existing booking in edit mode
  • Verify HTMX refresh updates fields correctly on service changes
  • Test mutability conditions prevent editing locked fields
  • Validate insurance auto-reassignment works in edit context
  • Confirm toast notifications appear for automatic field changes (rental clearing, insurance reassignment)
  • Test bulk insurance booking if applicable to edit flow
  • Verify field dependencies work (skipass → rentals → insurance → body dimensions)
  • Test form submission updates booking via API
  • Verify error handling displays validation messages

Notes:

  • Create test fixtures with various mutability states
  • Test with bookings in different statuses (confirmed, option, etc.)

Task 6.2: Test Room Assignment Hiding

Status: Not Started Test Coverage:

  • Verify room assignment field not rendered in edit mode
  • Confirm current room displayed as read-only info
  • Validate room data preserved in DTO after form submission
  • Test that room pricing included in summary correctly

Notes:

  • Room changes must go through customer service
  • UI should make this clear

Task 6.3: Test Pricing Calculations

Status: Not Started Test Coverage:

  • Validate summary shows correct room totals
  • Validate summary shows correct service totals grouped by type
  • Confirm grand total matches booking total
  • Verify individual participant prices displayed correctly
  • Test service price updates reflect in real-time during HTMX refresh
  • Compare calculated prices with API-returned prices

Notes:

  • Pricing must match BPN API calculations exactly
  • Edge cases: discounts, surcharges, individual pricing

Key Differences: Create vs. Edit

Aspect Create Flow Edit Flow
Room Assignment Selectable dropdown with HTMX updates Hidden (read-only display only)
Field Mutability All fields editable (subject to age/conditions) Conditional based on booking status and dates
Data Source New BookingCreateDto from session BookingEditDto::fromBooking() from API
Validation Full validation on all fields Full validation but fields may be readonly
API Endpoint ApiClient::createBooking() (to be implemented) ApiClient::updateBooking() (exists)
DTO Population From user input + room selections From API booking data via Booking model
Field State Provider CreateFieldStateProvider EditFieldStateProvider
Mutability Flags Not applicable (all editable) From Travel model (participantDataMutable, additionalServicesMutable, etc.)
Booking ID Not yet assigned From URL parameter (/bookings/{id}/edit)
Cache Strategy Session storage API cache (5 min TTL)

Benefits

1. Code Reuse

  • Single participant form type for both create and edit
  • Unified field handlers work in both contexts
  • Shared template components (macros, summary partial)
  • Reduced maintenance burden

2. Consistency

  • Identical UX for create and edit workflows
  • Same HTMX behavior and real-time updates
  • Consistent pricing display and calculations
  • Unified toast notification system

3. Maintainability

  • Field changes propagate to both contexts automatically
  • Single source of truth for field definitions
  • Centralized field state logic
  • Easier to add new features (apply to both flows)

4. Modern UX

  • Real-time form updates without full page reload
  • Dynamic pricing feedback as user makes changes
  • Toast notifications for automatic field changes
  • Responsive summary sidebar with live totals

5. Insurance Support

  • Full insurance field integration in edit flow
  • Auto-reassignment on price tier changes
  • Conditional visibility based on date of birth
  • Bulk insurance booking support (if enabled for edit)

6. API Preparation

  • Booking submission infrastructure ready for create flow
  • BookingDataProcessor handles both create and update
  • API client method for booking creation
  • Completes end-to-end booking workflow

Technical Notes

Field Handler Compatibility

All field handlers implement ParticipantFieldHandlerInterface and work with BookingDtoInterface, making them automatically compatible with both create and edit contexts:

  • ParticipantSkiPassFieldHandler
  • ParticipantRentalsFieldHandler
  • ParticipantRentalInsuranceFieldHandler
  • ParticipantInsuranceFieldHandler
  • ParticipantTransportationOutboundFieldHandler
  • ParticipantTransportationInboundFieldHandler
  • ParticipantPickupOutboundFieldHandler
  • ParticipantPickupInboundFieldHandler
  • ParticipantParkingFieldHandler
  • ParticipantLicensePlateFieldHandler
  • ParticipantBulkInsuranceFieldHandler
  • ParticipantBoardFieldHandler
  • ParticipantCoursesFieldHandler
  • ParticipantAdditionalServicesFieldHandler
  • ParticipantBodyDimensionsFieldHandler

Mutability Flags Source

The edit flow relies on mutability flags from the BPN API:

API Endpoint: getMutableData($dateId) Response Type: BaseData with mutability items Application: TravelDataService::patchMutability($travel, $mutableData)

Flags:

  • participantDataMutable → Personal data fields readonly if false
  • additionalServicesMutable → Service fields readonly if false
  • transportationServicesMutable → Transportation fields readonly if false
  • pickupsMutable → Pickup fields readonly if false

Service Filtering in Edit

Edit flow needs special service filtering:

// Merge services from travel data + services from existing booking
private function mergeSelectableServices(BookingEditDto $data, string|array $subType): array
{
    $selectableServices = $data->travel->getAdditionalServicesBySubTypes($subType);
    $selectableServiceIds = array_map(fn(Service $service) => $service->id, $selectableServices);

    // Add services from booking that are no longer in travel data (legacy services)
    foreach ($data->booking->getAdditionalServicesByGroup($subType) as $item) {
        if (!in_array($item->id, $selectableServiceIds)) {
            $selectableServices[] = $item;
        }
    }

    return $selectableServices;
}

This ensures participants can keep legacy services that may no longer be offered.

Participant Status Handling

Edit template must handle canceled participants:

if ('S' === $participant->status) {
    // Show canceled badge, display surcharges only, don't render form fields
}

Field handlers should skip processing for canceled participants:

if ($participant->status === 'S') {
    return; // Don't process services for canceled participants
}

Migration Checklist

Pre-Migration

  • Backup database
  • Document current edit flow behavior
  • Create test bookings in various states (confirmed, option, with/without mutability)
  • Review custom business rules for edit (if any)

During Migration

  • Follow phase order (1 → 2 → 3 → 4 → 5 → 6)
  • Complete all tasks in a phase before moving to next
  • Test after each phase
  • Commit changes per phase with descriptive messages

Post-Migration

  • Full regression test of edit flow
  • User acceptance testing
  • Update documentation
  • Remove deprecated BookingEditParticipantType file
  • Clean up old template code
  • Monitor production for issues

Open Questions

  1. Bulk Insurance in Edit: Should bulk insurance booking be available when editing? Or only during creation?

    • Decision: TBD - Needs business rule clarification
  2. Room Assignment Changes: Should there be a way for users to request room changes (e.g., via remarks field)?

    • Decision: TBD - May add "request change" functionality
  3. Canceled Participant Re-activation: Can canceled participants be re-activated through the edit form?

    • Decision: TBD - Likely not allowed, needs customer service intervention
  4. Legacy Service Handling: How to display services that are no longer offered but exist in booking?

    • Current: Service has source: 'BOOKING' flag, displayed with special styling
    • Action: Maintain current approach
  5. Insurance in Edit: Should insurance be editable or locked after booking creation?

    • Assumption: Editable if additionalServicesMutable is true
    • Action: Follow mutability flags from API

Progress Tracking

Overall Progress: 12/15 tasks complete (80%) - Phase 5 deferred, Phase 6 requires test data

Phase 1: 3/3 complete

  • Task 1.1: Renamed BookingCreateParticipantType to BookingParticipantType and made it context-aware
  • Task 1.2: Updated BookingEditType to use modern form architecture
  • Task 1.3: Extended EditFieldStateProvider with field conditions (insurance skipped)

Phase 2: 3/3 complete

  • Task 2.1: Added HTMX Refresh Endpoint
  • Task 2.2: Integrated Pricing Calculation
  • Task 2.3: Enriched Availability Data

Phase 3 & 4: 6/6 complete (Combined in template rewrite)

  • Task 3.1: Adopted Create Template Structure (form theme, macros, grid layout)
  • Task 3.2: Integrated Summary Sidebar (reuses _summary.html.twig partial)
  • Task 3.3: Added HTMX Attributes (all service fields trigger app_booking_edit_refresh)
  • Task 3.4: Removed Manual Readonly Overlays (field state system handles all states)
  • Task 4.1: Room Assignment Field Not Rendered (not in form, handled by field state)
  • Task 4.2: Display Current Room Assignment (read-only display in template lines 236-250)

Phase 5: ⏸️ DEFERRED

  • ⏸️ Task 5.1: Implement Create Booking Method (deferred to future)
  • ⏸️ Task 5.2: Add ApiClient::createBooking() (deferred to future)

Phase 6: Pending Test Data

  • Task 6.1: Test Edit Flow (requires test bookings)
  • Task 6.2: Test Room Assignment Hiding (requires test bookings)
  • Task 6.3: Test Pricing Calculations (requires test bookings)

References

Key Files

  • Create Flow Controller: src/Controller/Booking/CreateStep2Controller.php
  • Edit Flow Controller: src/Controller/Booking/EditController.php
  • Create Form Type: src/Form/BookingCreateStep2Type.php
  • Edit Form Type: src/Form/BookingEditType.php
  • Participant Form Type: src/Form/BookingCreateParticipantType.php
  • Legacy Edit Participant Type: src/Form/BookingEditParticipantType.php (to be removed)
  • Field State Providers: src/Form/Service/{Create,Edit}FieldStateProvider.php
  • Field Options Provider: src/Form/Service/ParticipantFieldOptionsProvider.php
  • Field Handler Registry: src/Form/Service/ParticipantFieldHandlerRegistry.php
  • Booking Data Processor: src/BusProNet/DataProcessor/BookingDataProcessor.php
  • API Client: src/BusProNet/ApiClient.php
  • Create Template: templates/booking/create_step_2.html.twig
  • Edit Template: templates/booking/edit.html.twig
  • Summary Partial: templates/booking/_summary.html.twig
  • CLAUDE.md - Project overview and development guidelines
  • Insurance Implementation (completed sessions)
  • Transportation Services Implementation (completed sessions)
  • Rental Insurance & Body Dimensions Implementation (completed sessions)

End of Document