safekat/ci4/app/Models/Chat/ChatModel.php

<?php

namespace App\Models;

use CodeIgniter\Model;

class ChatModel extends Model
{
    protected $table            = 'chats';
    protected $primaryKey       = 'id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $useSoftDeletes   = false;
    protected $protectFields    = true;
    protected $allowedFields    = [];

    protected bool $allowEmptyInserts = false;
    protected bool $updateOnlyChanged = true;

    protected array $casts = [];
    protected array $castHandlers = [];

    // Dates
    protected $useTimestamps = false;
    protected $dateFormat    = 'datetime';
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';
    protected $deletedField  = 'deleted_at';

    // Validation
    protected $validationRules      = [];
    protected $validationMessages   = [];
    protected $skipValidation       = false;
    protected $cleanValidationRules = true;

    // Callbacks
    protected $allowCallbacks = true;
    protected $beforeInsert   = [];
    protected $afterInsert    = [];
    protected $beforeUpdate   = [];
    protected $afterUpdate    = [];
    protected $beforeFind     = [];
    protected $afterFind      = [];
    protected $beforeDelete   = [];
    protected $afterDelete    = [];

    
    public function getChat(int $chat_id)
    {
        $this->db->table('chats')
        ->select([
            "chats.id as chatId",
            "users.id as userId",
            "users.email",
            "chat_messages.created_at as messageCreatedAt",
            "chat_messages.message as messageText",
            ]
        )
        ->join("users","users.id == chat_messages.user_id","left")
        ->join("chat_messages","chats.id == chat_messages.chat_id","left");

    }
}