Laravel return error messages from custom validation-CodePudding

I can't find any solution on how to display error messages from custom validation. I can not find it even on StackOverflow. My problem is that I have my controller and I need to validate some stuff in my custom class.

Controller:

public function store()
{
    $customStuff = new MyTestClass();

    $variable =  $customStuff->myCustomValidation(5 );
    
    return view('test.index', compact('variable'));
}

And custom class:

namespace App\Classes;

class MyTestClass
{
    public function myCustomValidation($a = null, $b = null)
    {
        if (empty($a))
        {
            dd('error 1'); // how to throw message here
        }
        elseif (empty($b))
        {
            dd('error 2');  // how to throw message here
        }
        else
        {
            return ($a   $b);
        }
    }
}

This is just a sample code. I know how to use Validator inside Controller but is it possible to return an error back to the user if something is wrong in the custom class? Instead of dd(), it has to be an error message to the user.

CodePudding user response：

If you want to return that the validation failed to your view then do

return redirect()->back()->withErrors(['Message here!']);

And if you return as a API response then do

return response()->json(['error' => 'Message here!'], 404); // Or any other status code

CodePudding user response：

<?php

namespace App\Classes;

class MyTestClass
{
    public function myCustomValidation($a = null, $b = null)
    {
        abort_if(empty($a), 403, 'error 1');
        abort_if(empty($b), 403, 'error 2');

        return ($a   $b);
    }
}

CodePudding user response：

Why did you created a plain Class for validation?

You can use laravel rules if you are trying to create a custom validator

If you don't want to use a validator you can set a flash message