Undefined variable: $errors - laravel

Question

i try show errors after validate a form.
i use this code on the view:
#if($errors->has())
#foreach ($errors->all() as $error)
<div>{{ $error }}</div>
#endforeach
#endif
and in the controller:
public function searchActivity(Request $request){
$this->validate($request, [
'search' => 'required',
'date' => 'required_with:search|required|date|after:yesterday'
]);
return view(App::getLocale() . '.activities.ActivityResults');
}
but dont work.
What could be happening?
note: i use Laravel 5.3.

Answer 1

The has method may be used to determine if any error messages exist
for a given field:
if ($errors->has('email')) {
//
}
So we can check like
#if (count($errors) > 0)
<div class="alert alert-danger">
<ul>
#foreach ($errors->all() as $error)
<li>{{ $error }}</li>
#endforeach
</ul>
</div>
#endif
Ref Link : https://laravel.com/docs/5.3/validation

Answer 2

If you are getting the "Undefined variable: $errors...", check your routes and ensure that the route has the "web" middleware assigned to it. Check your route list:
php artisan route:list
As you can see from the sample output below, the admin routes do not have the "web" middleware assigned to it:
| | GET|HEAD | admin/home | home | App\Http\Controllers\HomeController#index | cors,auth
|
| | POST | admin/login | | App\Http\Controllers\Auth\LoginController#login | cors,guest
|
| | GET|HEAD | admin/login | login | App\Http\Controllers\Auth\LoginController#showLoginForm | cors,guest
|
| | POST | admin/logout | logout | App\Http\Controllers\Auth\LoginController#logout | cors
As mentioned by #patricus in his answer:
The $errors variable is made available to the views in the
Illuminate\View\Middleware\ShareErrorsFromSession middleware. This
middleware is included in the web middleware group by default.
If your route is not using the web middleware group, make sure that
whatever group it is in includes this middleware (along with
Illuminate\Session\Middleware\StartSession, since the errors are
stored in the session).
To fix this, wrap the affected routes in your routes/web.php or routes/api.php within a group and assign the "web" middleware to the group, like so:
Route::group(['middleware' => 'web'], function () {
Auth::routes();
});
Then check again:
php artisan route:list
Sample output:
| | POST | admin/login | | App\Http\Controllers\Auth\LoginController#login | cors,web,guest
|
| | GET|HEAD | admin/login | login | App\Http\Controllers\Auth\LoginController#showLoginForm | cors,web,guest
|
| | POST | admin/logout | logout | App\Http\Controllers\Auth\LoginController#logout | cors,web
|
| | POST | admin/password/email | password.email | App\Http\Controllers\Auth\ForgotPasswordController#sendResetLinkEmail | cors,web,guest
|
| | POST | admin/password/reset | password.update | App\Http\Controllers\Auth\ResetPasswordController#reset | cors,web,guest
|
| | GET|HEAD | admin/password/reset | password.request | App\Http\Controllers\Auth\ForgotPasswordController#showLinkRequestForm | cors,web,guest
|
| | GET|HEAD | admin/password/reset/{token} | password.reset | App\Http\Controllers\Auth\ResetPasswordController#showResetForm | cors,web,guest
|
| | POST | admin/register | | App\Http\Controllers\Auth\RegisterController#register | cors,web,guest
|
| | GET|HEAD | admin/register | register | App\Http\Controllers\Auth\RegisterController#showRegistrationForm | cors,web,guest

Answer 3

use #if($errors->any()) instead of #if($errors->has())
and if this could help this code works well with me
#if(!empty($errors))
#if($errors->any())
<ul class="alert alert-danger" style="list-style-type: none">
#foreach($errors->all() as $error)
<li>{!! $error !!}</li>
#endforeach
</ul>
#endif
#endif

Answer 4

I think it is better use a front end validator like jqueryValidator.
Because to validate this form you have to turn off the Javascript in your browser.Then it will sometimes damage your work in loading datatables or related js works inside your project.
But if u are using a backend validation this may help you to understand it better.
Here, in the blade:
#if(!$errors->isEmpty())
<div class="alert alert-danger ">
×
<div class="error">
{{--#if(isset($errors))--}}
{{ $errors->first('email') }}
{{ $errors->first('password') }}
{{ $errors->first('confirmPassword') }}
{{ $errors->first('FirstName') }}
{{ $errors->first('LastName') }}
{{ $errors->first('JoinDate') }}
{{ $errors->first('dob') }}
</div>
</div>
#endif
And in the created request class inside the rule() function
return [
'email' => 'required|between:3,64|email|unique:employees',
'password' =>'required|min:5|max:10',
'confirmPassword' =>'required|same:password',
'FirstName' =>'required',
'JoinDate' =>'required|after:dob',
'LastName' =>'required',
'dob' =>'required',
];

Answer 5

#patricus made very good answer.
You can append 'web' middleware to your routes and all errors will appear in view:
Route::get('path', Controller::class .'#method')->middleware(['web']);

Answer 6

use
#foreach($errors as $error)
{{ $error}}}
#endforeach
I use this syntax for error

Answer 7

The $errors variable is made available to the views in the Illuminate\View\Middleware\ShareErrorsFromSession middleware. This middleware is included in the web middleware group by default.
If your route is not using the web middleware group, make sure that whatever group it is in includes this middleware (along with Illuminate\Session\Middleware\StartSession, since the errors are stored in the session).