Field validation in Lumen 5.5

Question

In Lumen version 5.2 the following validation in the Controller is working:

$this->validate($request, [
        'nome' => 'required',
        'email' => 'required|email',
        'cpf' => 'required',
    ]);

Iofc the following View:

@if (count($errors) > 0) {
    <div>
        <ul>
            @foreach($errors->all() as $error){
                    echo("<li>". $error . "</li>");
                 }
            @endforeach     
        </ul>
    </div>
@endif

It turns out that in version 5.5 of Lumen is not working.

The following error is displayed:1/1) Errorexception Undefined variable: errors in cadasPeople.php (line 8) at Application->Laravel Lumen Concerns{closure}(8, 'Undefined variable: errors', 'C: wamp64 www blog Resources views cadasPessoas.Ph p', 8, array('__path' => 'C: wamp64 www blog Resources views/cadastroPessoas.php ', '__data' => array('__env' => Object(Factory), 'app' => Object(Application)), 'obLevel' => 1, '__env' => Object(Factory), 'app' => Object(Application))) in cadastre('C: wamp64 www blog Resources views cadastroPe ssoas.php

Answer 1

Not working is very ambiguous, probably it is occurring 500 Internal server error (if DEBUG is turned off) or this displaying an Exception.

It seems to me it’s a series of typo:

Has a { not required, in "Views" this is not used:

@if (count($errors) > 0) { <--- ISTO
...
    @foreach($errors->all() as $error){ <--- ISTO

and }:

    echo("<li>". $error . "</li>");
 } <--- ISTO

and maybe echo also does not work (nor does it make sense, even if it works, to use echo, after all the rest did not need)

It must be so:

@if (count($errors) > 0)
    <div>
        <ul>
            @foreach ($errors->all() as $error)
                <li>{{ $error }}</li>
            @endforeach     
        </ul>
    </div>
@endif

Always make the examples according to the documentation: https://laravel.com/docs/5.5/validation#Quick-Displaying-the-validation-errors

Note: I don’t know if $errors works with count(), but in the example is with ->any(), so if the script still fails, switch to

@if ($errors->any())
    <div>
        <ul>
            @foreach ($errors->all() as $error)
                <li>{{ $error }}</li>
            @endforeach     
        </ul>
    </div>
@endif

---

Important note about $errors in Laravel/Lumen views

Why $errors is available it is necessary to add to middleware the Illuminate\View\Middleware\ShareErrorsFromSession, then go to bootstrap/app.php and add this:

$app->middleware([
   Illuminate\View\Middleware\ShareErrorsFromSession::class
]);

So the $errors will be "global", if not added Lumen will trigger the error:

Errorexception Undefined variable: errors