First, let us modify the routing to add an article to publish.
Route::get('articles/create', 'ArticlesController@create');
Then modify the controller
public function create() { return view('articles.create'); }
We return a view and create a new view. Of course we could create the form directly using HTML, but we have a more functional way. We use an open source library, illuminatehtml developed by Jeffrey Way. Install dependent libraries:
composer require illuminate/html
Laravel’s library needs to be registered in laravel before it can be used. Inconfig/app.php
, we can see theprovider
field provided by laravel, which describes the library functions of laravel. InLaravel Framewirk Service Providers...
finally add our newHtmlProvider
'Illuminate\Html\HtmlServiceProvider',
We don’t want to use a long name likeIlluminateHtmlFromFacade
to import, we need a short name. Find the aliases section in the currentapp.php
and add the alias at the end.
'Form' => 'Illuminate\Html\FormFacade', 'Html' => 'Illuminate\Html\HtmlFacade',
OK, now let’s create the view,views/articles/create.blade.php
@extends('layout') @section('content') Write a New Article
{{--使用我们添加的 illuminate\html 开源库--}} {!! Form::open() !!} {!! Form::close() !!} @stop
Visit/articles/create
and see the error, Why? Let’s test it to see what went wrong. Make the following changes in the controller:
public function show($id) { dd('show'); $article = Article::findOrFail($id); return view('articles.show', compact('article')); }
That’s right, you read that right, just add thedd()
method to theshow
method. This method simply outputs a message and then dies. Let’s visit/articles/create
again. What do you see? You see the outputshow
.
Why did we accesscreate
and the resulting route gave usshow
? Let’s check the route and see what happened.
Route::get('articles', 'ArticlesController@index'); Route::get('articles/{id}', 'ArticlesController@show'); Route::get('articles/create', 'ArticlesController@create');
The above is our route, notice thatarticles/{id}
means this is a wildcard, everything afterarticles/
will match, did you know? Our/articles/create
was also matched by him. OMG!
The solution is to adjust the order:
Route::get('articles', 'ArticlesController@index'); Route::get('articles/create', 'ArticlesController@create'); Route::get('articles/{id}', 'ArticlesController@show');
That is, from special to ordinary, you should always pay attention to this issue in future routing settings. Now we are accessingarticles/create
and everything is OK.
Check the source code in the browser, you will find that not onlymethod
andaction
are generated, but also a hidden_token
field is generated as the server verifies the form to avoid forgery attacks by hackers.
Let’s modify our view and add fields:
@extends('layout') @section('content') Write a New Article
{{--使用我们添加的 illuminate\html 开源库--}} {!! Form::open() !!} {!! Form::label('title', 'Title:') !!} {!! Form::text('title', null, ['class' => 'form-control']) !!} {!! Form::label('body', 'Body:') !!} {!! Form::textarea('body', null, ['class' => 'form-control']) !!} {!! Form::submit('Add Article', ['class' => 'btn btn-primary form-control']) !!} {!! Form::close() !!} @stop
When the form is submitted, it is actually submitted toarticles/create
using thepost
method, but according to RESTful habits, we hope to be able topost
to/articles
, let’s modify the form of the view Method to set the submission path.
{!! Form::open(['url' => 'articles']) !!}
Then we handle the form submission event in the route.
Route::post('/articles', 'ArticlesController@store');
Let’s deal with the controller
//注意:将下面的 use 语句删除,我们使用 facade 接口中的 Request //use App\Http\Requests\Request; //引入下面的命名空间中的 Request use Illuminate\Support\Facades\Request; public function store() { //使用 Illuminate\Html\Request 来返回全部的表单输入字段 $input = Request::all(); //我们直接返回$input,来看一下 return $input; }
We can directly see the json result of the input form. If you only need the value of thetitle
field, you can useRequest::get('titel')
.
How to add it to the database? With the help of the model, we can directly adopt the following method,
Article::create($input);
It’s that simple, it’s that willful
If we didn’t forget Mass Assignment, we defined the$fillable
array in our model to define those fields that can be filled directly duringcreate
.
Modify the controller, add it to the model, and store it in the database.
public function store() { $input = Request::all(); Article::create($input); return redirect('articles'); }
Try adding a record, it’s great. But don't forget. We also have a field calledpublished_at
, let’s deal with that.
public function store() { $input = Request::all(); $input['published_at'] = Carbon::now(); Article::create($input); return redirect('articles'); }
Add a new record and test it.
There is another problem, the newly added one should be displayed at the front, let’s modify the following controller.
public function index() { //倒序获取文章 //可以这样 //$articles = Article::orderBy('published_at', 'desc')->get(); //简单方式,当然还有 oldest() $articles = Article::latest('published_at')->get(); return view('articles.index', compact('articles')); }
The above introduces the basics of Laravel 5 (9) - Form, including the content. I hope it will be helpful to friends who are interested in PHP tutorials.