wip: field states and dependencies
This commit is contained in:
Björn Fromme
@@ -5,36 +5,40 @@ declare(strict_types=1);
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namespace App\Form\Service;
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use App\Form\Model\BookingCreateDto;
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use App\Form\ParticipantFieldHandler\Condition\FieldConditionInterface;
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/**
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* Provides dynamic field options for participant form fields.
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* Provides dynamic field options and state for participant form fields.
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*
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* This service acts as a field option provider registry for the participant form
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* system. It generates context-aware Symfony form field options based on the
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* overall booking context and individual participant data.
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* This service acts as both a field option provider and field state provider
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* for the participant form system. It generates context-aware Symfony form
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* field options and calculates dynamic field states based on conditional logic.
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*
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* Key Responsibilities:
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* - Manages field option providers for dynamic fields
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* - Calculates field states based on conditional logic
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* - Provides context-aware field configurations
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* - Handles interdependent field relationships
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* - Supports extensible field option generation
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* - Supports extensible field option and state generation
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*
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* The provider uses a callable pattern where each field has a function
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* that generates the appropriate Symfony form options based on the current
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* booking and participant state.
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* The provider uses a callable pattern for field options and a condition-based
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* system for field states, enabling complex conditional field behavior.
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*/
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class ParticipantFieldOptionsProvider
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class ParticipantFieldOptionsProvider implements FieldStateProviderInterface
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{
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/** @var array<string, callable> Field option providers indexed by field name */
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private array $fieldOptionProviders = [];
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/** @var array<string, array<string, FieldConditionInterface>> Field state conditions indexed by field name and state type */
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private array $fieldStateConditions = [];
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/**
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* Initializes the provider with required dependencies.
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*
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* The provider automatically registers all field option providers
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* during construction to ensure they're available for form building.
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* This approach keeps all field configuration logic centralized and
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* makes it easy to add new dynamic fields.
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* The provider automatically registers all field option providers and
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* field state conditions during construction to ensure they're available
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* for form building. This approach keeps all field configuration logic
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* centralized and makes it easy to add new dynamic fields.
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*
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* @param ParticipantRoomChoiceLoaderFactory $roomChoiceLoaderFactory Factory for creating room choice loaders
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*/
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@@ -42,6 +46,7 @@ class ParticipantFieldOptionsProvider
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private readonly ParticipantRoomChoiceLoaderFactory $roomChoiceLoaderFactory,
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) {
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$this->registerFieldOptionProviders();
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$this->registerFieldStateConditions();
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}
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/**
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@@ -139,8 +144,160 @@ class ParticipantFieldOptionsProvider
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// 'Vegetarian' => 'vegetarian',
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// 'Vegan' => 'vegan',
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// ],
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// // Could depend on room assignment or other factors
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// 'disabled' => !$this->hasMealOptions($bookingDto, $participantIndex),
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// ];
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}
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}
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/**
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* Calculates the dynamic state for a specified field.
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*
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* Evaluates all configured conditions for a field and returns the appropriate
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* state modifications. State conditions are organized by state type (readonly,
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* disabled, etc.) and evaluated independently.
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*
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* @param string $fieldName The name of the field to evaluate
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* @param BookingCreateDto $bookingDto The current booking data for context
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* @param int $participantIndex The index of the participant being evaluated
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* @param array<string, mixed> $formData Current form data for condition evaluation
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*
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* @return array<string, mixed> Symfony form field options for state modifications
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*/
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public function getFieldState(string $fieldName, BookingCreateDto $bookingDto, int $participantIndex, array $formData = []): array
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{
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if (!isset($this->fieldStateConditions[$fieldName])) {
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return [];
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}
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$stateModifications = [];
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$attributes = [];
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foreach ($this->fieldStateConditions[$fieldName] as $stateType => $condition) {
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if ($condition->evaluate($bookingDto, $participantIndex, $formData)) {
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switch ($stateType) {
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case 'readonly':
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$attributes['readonly'] = true;
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break;
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case 'disabled':
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$stateModifications['disabled'] = true;
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break;
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case 'required':
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$stateModifications['required'] = true;
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break;
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case 'hidden':
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$attributes['style'] = ($attributes['style'] ?? '').' display: none;';
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break;
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}
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}
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}
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if (!empty($attributes)) {
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$stateModifications['attr'] = $attributes;
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}
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return $stateModifications;
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}
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/**
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* Checks whether a field has state conditions configured.
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*
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* @param string $fieldName The name of the field to check
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*
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* @return bool True if the field has state conditions configured
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*/
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public function hasStateConditions(string $fieldName): bool
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{
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return isset($this->fieldStateConditions[$fieldName]) && !empty($this->fieldStateConditions[$fieldName]);
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}
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/**
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* Returns field names that trigger state re-evaluation for a given field.
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*
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* @param string $fieldName The name of the field to get dependencies for
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*
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* @return string[] Array of field names that affect the specified field's state
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*/
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public function getFieldStateDependencies(string $fieldName): array
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{
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if (!isset($this->fieldStateConditions[$fieldName])) {
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return [];
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}
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$dependencies = [];
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foreach ($this->fieldStateConditions[$fieldName] as $condition) {
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$dependencies = array_merge($dependencies, $condition->getDependentFields());
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}
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return array_unique($dependencies);
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}
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/**
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* Calculates field states for all configured fields at once.
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*
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* @param BookingCreateDto $bookingDto The current booking data for context
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* @param int $participantIndex The index of the participant being evaluated
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* @param array<string, mixed> $formData Current form data for condition evaluation
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*
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* @return array<string, array<string, mixed>> Field states indexed by field name
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*/
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public function getAllFieldStates(BookingCreateDto $bookingDto, int $participantIndex, array $formData = []): array
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{
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$allStates = [];
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foreach (array_keys($this->fieldStateConditions) as $fieldName) {
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$fieldState = $this->getFieldState($fieldName, $bookingDto, $participantIndex, $formData);
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if (!empty($fieldState)) {
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$allStates[$fieldName] = $fieldState;
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}
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}
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return $allStates;
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}
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/**
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* Registers field state conditions during service initialization.
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*
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* This method defines the conditional logic for field states. Each field
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* can have multiple state conditions (readonly, disabled, hidden, required)
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* that are evaluated independently.
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*
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* Adding new field state conditions:
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* To add conditional state logic for a field, register conditions here:
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*
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* $this->fieldStateConditions['fieldName'] = [
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* 'readonly' => new SomeCondition(),
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* 'disabled' => CompositeCondition::and(
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* new AgeRangeCondition(null, 17),
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* FieldValueCondition::equals('someField', 'someValue')
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* ),
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* ];
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*
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* Condition Types:
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* - 'readonly': Field is visible but not editable
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* - 'disabled': Field interaction is disabled
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* - 'required': Field becomes mandatory
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* - 'hidden': Field is not displayed
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*/
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private function registerFieldStateConditions(): void
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{
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// Example field state conditions would be registered here
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// For demonstration purposes, here are some example patterns:
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// Example 1: Make assignedRoomId readonly for participants under 18
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// $this->fieldStateConditions['assignedRoomId'] = [
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// 'readonly' => new AgeRangeCondition(null, 17),
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// ];
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// Example 2: Disable service selection if no room is assigned
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// $this->fieldStateConditions['serviceSelection'] = [
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// 'disabled' => FieldValueCondition::isEmpty('assignedRoomId'),
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// ];
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// Example 3: Complex condition with multiple criteria
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// $this->fieldStateConditions['advancedOptions'] = [
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// 'hidden' => CompositeCondition::or(
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// new AgeRangeCondition(null, 15),
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// FieldValueCondition::equals('userType', 'basic')
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// ),
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// ];
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}
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}
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