Laravel redirect withErrors not working - php

Question

SO i've trying to make simple laravel validation, but kinda stuck because i cannot return validation error message.
Controller:
//for "GET" method
public function courseAdminCreate()
{
return view('course/adminCreate');
}
//for "POST" method
public function doCourseAdminCreate()
{
$rules = array(
'name' => 'required',
'contact_name' => 'required',
'contact_number' => 'required|numeric',
'account_number' => 'required|numeric',
'address' => 'required',
'latitude' => 'required',
'longitude' => 'required'
);
$validator = Validator::make(Input::all(), $rules);
if ($validator->fails()) {
//get error message
$messages = $validator->messages();
//die($messages); //if i using DIE command, error message appear
return redirect("course/admin/create")->withErrors($validator);
} else {
//Save to DB
}
}
Routes.php:
//other code
Route::get('course/admin/create', ['as' => 'courseAdminCreate', 'uses' => 'CourseController#courseAdminCreate']);
Route::post('course/admin/create', ['as' => 'doCourseAdminCreate', 'uses' => 'CourseController#doCourseAdminCreate']);
//other code
Views:
#extends('layouts.app')
#section('title')
Course
#stop
#section('content')
<div class="row">
<div class="col-lg-12">
<div class="panel panel-default">
<div class="panel-heading">
#yield('title') Add
</div>
<div class="panel-body">
{!! Form::open(['url' => '/course/admin/create']) !!}
<div class="row">
<div class="col-lg-12">
<!--START PRINT ERROR MESSAGE -->
#if (count($errors) > 0)
<div class="alert alert-warning alert-dismissable">
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button>
#foreach ($errors->all() as $error)
<li>{{ $error }}</li>
#endforeach
</div>
#endif
<!-- END PRINT ERROR MESSAGE -->
</div>
<div class="col-lg-6">
<div class="form-group">
<label>Course Name</label>
<input class="form-control" name="name" placeholder="name.." required>
</div>
<div class="form-group">
<label>Contact Name</label>
<input class="form-control" name="contact_name" placeholder="contact.." required>
</div>
<div class="form-group">
<label>Contact Number</label>
<input class="form-control" name="contact_number" placeholder="number.." required>
</div>
<div class="form-group">
<label>Account Number</label>
<input class="form-control" name="account_number" placeholder="account.." required>
</div>
</div>
<div class="col-lg-6">
<div class="form-group">
<label>Address</label>
<textarea class="form-control" name="address" rows="5" placeholder="address.." required></textarea>
</div>
<div class="form-group">
<label>latitude</label>
<input class="form-control" name="latitude" placeholder="latitude.." required>
</div>
<div class="form-group">
<label>longitude</label>
<input class="form-control" name="longitude" placeholder="longitude.." required>
</div>
</div>
<!-- /.col-lg-12 -->
<div class="col-lg-12">
<input type="submit" class="btn btn-default btn-success" value="Save"/>
Cancel
</div>
<!-- /.col-lg-12 -->
</div>
<!-- /.row (nested) -->
{!! Form::close() !!}
</div>
<!-- /.panel-body -->
</div>
<!-- /.panel -->
</div>
<!-- /.col-lg-12 -->
</div>
<!-- /.row -->
#stop
The validation is actually working, so for instance if i input other character beside numeric in "contact_number" it will redirect me back to course/admin/create, the problem are i cannot print the message. $errors in the view always count as empty array if i try to var_dump it.
Hope my information is enough, thank you very much.

Answer 1

The problem is probably in your controller. You can use the $this->validate() method in your Controller method instead of the facade method Validator::make. As you are not using any manually created validators/rules there is no point in using the make method.
If there is any error while validation, Laravel will automatically redirect back to the page the user is coming from - so you do not need any custom redirect logic.
Try this in your controller. You can inject the complete request into your doCourseAdminCreate method and pass it to the $this->validate() method.
//for "GET" method
public function courseAdminCreate()
{
return view('course/adminCreate');
}
//for "POST" method
public function doCourseAdminCreate(Request $request)
{
$rules = array(
'name' => 'required',
'contact_name' => 'required',
'contact_number' => 'required|numeric',
'account_number' => 'required|numeric',
'address' => 'required',
'latitude' => 'required',
'longitude' => 'required'
);
$this->validate($request, $rules);
// Save to db
}
All error messages are autommatically stored into the $errorvariable, that you are already using in your template.