cssd-back/app/InputValue.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class InputValue extends Model
{
    public $fillable = ['value','test_result_id','input_id'];
    public function input()
    {
        return $this->belongsTo('App\Input');
    }
    public function test_result()
    {
        return $this->belongsTo('App\TestResult');
    }
}