MessagesTable.php

<?php
declare(strict_types=1);

namespace App\Model\Table;

use Cake\ORM\RulesChecker;
use Cake\ORM\Table;
use Cake\Validation\Validator;

/**
 * Messages Model
 *
 * @property \App\Model\Table\UsersTable&\Cake\ORM\Association\BelongsTo $Users
 * @property \App\Model\Table\UsersTable&\Cake\ORM\Association\BelongsTo $Users
 * @method \App\Model\Entity\Message newEmptyEntity()
 * @method \App\Model\Entity\Message newEntity(array $data, array $options = [])
 * @method \App\Model\Entity\Message[] newEntities(array $data, array $options = [])
 * @method \App\Model\Entity\Message get($primaryKey, $options = [])
 * @method \App\Model\Entity\Message findOrCreate($search, ?callable $callback = null, $options = [])
 * @method \App\Model\Entity\Message patchEntity(\Cake\Datasource\EntityInterface $entity, array $data, array $options = [])
 * @method \App\Model\Entity\Message[] patchEntities(iterable $entities, array $data, array $options = [])
 * @method \App\Model\Entity\Message|false save(\Cake\Datasource\EntityInterface $entity, $options = [])
 * @method \App\Model\Entity\Message saveOrFail(\Cake\Datasource\EntityInterface $entity, $options = [])
 * @method \App\Model\Entity\Message[]|\Cake\Datasource\ResultSetInterface|false saveMany(iterable $entities, $options = [])
 * @method \App\Model\Entity\Message[]|\Cake\Datasource\ResultSetInterface saveManyOrFail(iterable $entities, $options = [])
 * @method \App\Model\Entity\Message[]|\Cake\Datasource\ResultSetInterface|false deleteMany(iterable $entities, $options = [])
 * @method \App\Model\Entity\Message[]|\Cake\Datasource\ResultSetInterface deleteManyOrFail(iterable $entities, $options = [])
 * @mixin \Cake\ORM\Behavior\TimestampBehavior
 */
class MessagesTable extends Table
{
    /**
     * Initialize method
     *
     * @param array $config The configuration for the Table.
     * @return void
     */
    public function initialize(array $config): void
    {
        parent::initialize($config);

        $this->setTable('messages');
        $this->setDisplayField('id');
        $this->setPrimaryKey('id');

        $this->addBehavior('Timestamp');

        $this->belongsTo('SentUsers', [
            'className' => 'Users',
            'foreignKey' => 'sender_user_id',
            'joinType' => 'INNER',
        ]);
        $this->belongsTo('ReceivedUsers', [
            'className' => 'Users',
            'foreignKey' => 'receiver_user_id',
            'joinType' => 'INNER',
        ]);
    }

    /**
     * Default validation rules.
     *
     * @param \Cake\Validation\Validator $validator Validator instance.
     * @return \Cake\Validation\Validator
     */
    public function validationDefault(Validator $validator): Validator
    {
        $validator
            ->uuid('sender_user_id')
            ->notEmptyString('sender_user_id');

        $validator
            ->uuid('receiver_user_id')
            ->notEmptyString('receiver_user_id');

        $validator
            ->integer('amount')
            ->requirePresence('amount', 'create')
            ->notEmptyString('amount');

        $validator
            ->scalar('type')
            ->maxLength('type', 255)
            ->requirePresence('type', 'create')
            ->notEmptyString('type');

        return $validator;
    }

    /**
     * Returns a rules checker object that will be used for validating
     * application integrity.
     *
     * Note: existsIn validation rules are defined here but may be skipped during save
     * when called with pre-loaded User entities (e.g., in AwardService). Database
     * foreign key constraints provide backup enforcement in such cases.
     *
     * @param \Cake\ORM\RulesChecker $rules The rules object to be modified.
     * @return \Cake\ORM\RulesChecker
     */
    public function buildRules(RulesChecker $rules): RulesChecker
    {
        $rules->add($rules->existsIn('sender_user_id', 'SentUsers'), ['errorField' => 'sender_user_id']);
        $rules->add($rules->existsIn('receiver_user_id', 'ReceivedUsers'), ['errorField' => 'receiver_user_id']);

        return $rules;
    }
}