Laravel call function from another class

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Welcome To Infinitbility!

If you are stuck calling function from another controller, relax you will definitely get a solution from this article.

If you want to use controller function please follow the business logic structure of laravel. sometimes it’s the reason of memory leak and security issue. I will never recommend using this method on your project.

here I will share two controllers to easily understand the calling a function from another controller.

Child Controller


<?php

namespace App\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

class ChildController extends Controller
{
    
    /**
     * Common function using on multiple controller
     */
    public function Calculation($firstNumber, $operator, $secondnumber){

        if($operator == '+'){
            $response = $firstNumber + $secondnumber;
        }elseif($operator == '-'){
            $response = $firstNumber - $secondnumber;
        }elseif($operator == '*'){
            $response = $firstNumber * $secondnumber;
        }elseif($operator == '/'){
            $response = $firstNumber / $secondnumber;
        }
        
        return $response;
    }

}

Parent Controller


<?php

namespace App\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Http\Controllers\ChildController;

class ParentController extends Controller
{
    protected $ChildController;
    public function __construct(ChildController $ChildController)
    {
        $this->ChildController = $ChildController;
    }

    /**
     * Parent function using child function
     */
    function calc(Request $Request){

        $firstNumber = $Request->input('firstNumber');
        $operator = $Request->input('operator'); 
        $secondnumber = $Request->input('secondnumber');

        $response = $this->ChildController->Calculation($firstNumber, $operator, $secondnumber);
        return $response;
    }
}