tinyqc/app/Models/ControlTestModel.php

<?php

namespace App\Models;

use App\Models\BaseModel;

class ControlTestModel extends BaseModel
{
    protected $table            = 'control_tests';
    protected $primaryKey       = 'control_test_id';
    protected $useAutoIncrement = true;
    protected $returnType       = 'array';
    protected $useSoftDeletes   = true;
    protected $useTimestamps    = true;
    protected $allowedFields    = ['control_ref_id', 'test_ref_id', 'mean', 'sd'];

    public function getByControl($controlId)
    {
        $builder = $this->db->table('control_tests ct');
        $builder->select('ct.*, t.name as test_name, t.unit');
        $builder->join('dict_tests t', 't.test_id = ct.test_ref_id');
        $builder->where('ct.control_ref_id', $controlId);
        return $builder->get()->getResultArray();
    }

    public function getByControlAndTest($controlId, $testId)
    {
        return $this->where('control_ref_id', $controlId)
                    ->where('test_ref_id', $testId)
                    ->first();
    }
}