Laravel Errors validation returning null - php

Question

Yesterday I started with Laravel, currently busy with my first project, a simple news page.
Unfortunately, I've met some problems while validating my post request, I've tried to search on Google for my issue. And I tried to use those fixes, but strange enough I had no result.
The problem is:
When I post data the normal 'form page' will be shown without any errors. I'm aware that I have double error outputs, it's just for the test.
What do I want to reach?
I want that the validation error will be shown
routes.php
<?php
Route::group(['middleware' => ['web']], function() {
Route::get('/', function() {
return redirect()->route('home');
});
Route::get('/home', [
'as' => 'home',
'uses' => 'HomeController#home',
]);
Route::get('/add_article', [
'as' => 'add_article',
'uses' => 'HomeController#add_article',
]);
Route::post('/add_article', [
'as' => 'add_article.newarticle',
'uses' => 'HomeController#post_article',
]);
});
HomeController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\News;
class HomeController extends Controller
{
public function home(News $news)
{
$articles = $news->orderBy('id','desc')->take(3)->get();
return view('home.home')->with('articles', $articles);
}
public function add_article()
{
return view('home.add_article');
}
public function post_article(Request $request)
{
$this->validate($request, [
'title' => 'required|max:64',
'content' => 'required|max:2048',
]);
// $newNews = new News;
// $newNews->title = $request->title;
// $newNews->content = $request->content;
// $newNews->save();
}
}
add_article.blade.php
#extends('templates.default')
#section('content')
<div class="row">
<div class="col-sm-12 col-md-6 col-lg-6 col-xl-6 offset-md-3 offset-lg-3 offset-xl-3">
<p class="lead">New news article</p>
<div class="card">
<div class="card-header">
<h5 class="mb-0"> </h5>
</div>
<div class="card-body">
#if (count($errors) > 0)
<div class="alert alert-danger">
<ul>
#foreach ($errors->all() as $error)
<li>{{ $error }}</li>
#endforeach
</ul>
</div>
#endif
<form method="post" action="{{ route('add_article.newarticle') }}">
<div class="form-group">
<label for="title" style="margin-bottom:0px;">
Title:
</label>
<input class="form-control" type="text" name="title" placeholder="Please enter your title!" id="title">
#if ($errors->has('title'))
{{ $errors->first('title') }}
#endif
</div>
<div class="form-group">
<label for="content" style="margin-bottom:0px;">
Content:
</label>
<textarea class="form-control" rows="3" name="content" placeholder="Please enter your message!" id="content" style="resize:none;"></textarea>
#if ($errors->has('content'))
{{ $errors->first('content') }}
#endif
</div>
<div class="form-group text-right">
<button class="btn btn-primary" type="submit">
Create news
</button>
</div>
{{ csrf_field() }}
</form>
</div>
</div>
</div>
</div>
#endsection
I hope someone can help me to resolve this issue!

Answer 1

use App\Http\Requests;
Remove This from HomeController.php and try.

Answer 2

Your validation is passing but you are not doing anything after so it's not going to show anything unless you tell it to.
Also make sure you use $request->all() instead of $request in the validator as the first one will return the actual input values that were submitted.
use Validator;
public function post_article(Request $request)
{
$validator = Validator::make($request->all(), [
'title' => 'required|max:64',
'content' => 'required|max:2048',
]);
if ($validator->fails()) {
return redirect('home')
->withErrors($validator)
->withInput();
}
// $newNews = new News;
// $newNews->title = $request->title;
// $newNews->content = $request->content;
// $newNews->save();
return redirect()->route('home')->with('message', 'Article created.');
}
}
Then in your view add the following at the top:
#if(Session::has('message'))
<div class="alert alert-success">
×
{{ Session::get('message') }}
</div>
#endif
#if (count($errors) > 0)
<div class="alert alert-danger">
<ul>
#foreach ($errors->all() as $error)
<li>{{ $error }}</li>
#endforeach
</ul>
</div>
#endif

Answer 3

Based on those validation rules you will only see errors when the title is empty or longer than 64 characters, or the content is empty or longer than 2048 characters. Make sure the data you are testing with is long enough to trigger any errors.
For data that passes validation the code currently does not save (commented out), nor does it return a new location or view so it will show a blank page. You should probably save the data and redirect to the index or a show page with a success message.