Laravel 5 basics (9)-form-php Tutorial

Laravel5 basics (9)-form first let's modify the route to add an article release. Route: get (& #39; articlescreate & #39;, & #39; [email & #160; protected] & #39;); then modify the controller publicfunctioncreate () {returnview (& #39; art Laravel 5 basics (9)-form

First, let's modify the route to add an article release.

Route::get('articles/create', '[email protected]');

Then modify the controller

    public function create() {        return view('articles.create');    }

We return a view to create this view. Of course we can use HTML to create a form directly, but we have a better function. We use an open-source library, illuminate \ html developed by Jeffrey Way. Install the dependency Library:

composer require illuminate/html

The laravel library must be registered in laravel for use. Inconfig/app.php, We can see what laravel providesproviderField, which describes the laravel library function. InLaravel Framewirk Service Providers...Add the newly addedHtmlProvider

'Illuminate\Html\HtmlServiceProvider',

We do not want to useIlluminate\Html\FromFacadeFor such a long name, we need a short name. In the currentapp.phpFind the aliases segment and add the alias at the end.

'Form'      => 'Illuminate\Html\FormFacade','Html'      => 'Illuminate\Html\HtmlFacade',

OK. Now let's create a view,views/articles/create.blade.php

@ Extends ('layout ') @ section ('content') Write a New Article
  {-- Use the illuminate \ html open source library we added --}}{!! Form: open ()!!} {!! Form: close ()!!} @ Stop

Access/articles/createWhy? Let's test 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'));    }

You are not mistaken.showAdddd()Method, this method simply outputs a message and then dies. Visit again/articles/createWhat did you see, and you saw the outputshow.

Why do we accesscreateThe result is routed to us.show? Let's check what happened to the route.

Route::get('articles', '[email protected]');Route::get('articles/{id}', '[email protected]');Route::get('articles/create', '[email protected]');

The above is our route. Note thatarticles/{id}This means that this is a wildcard.articles/All the other things will match. do you know? Our/articles/createIt is also matched by him. OMG!

The solution is to adjust the order:

Route::get('articles', '[email protected]');Route::get('articles/create', '[email protected]');Route::get('articles/{id}', '[email protected]');

That is, you should always pay attention to this problem in route settings from special to normal. Now we are accessingarticles/createEverything is OK.

Check the source code in the browser and you will find that not onlymethodAndactionA hidden_tokenThe field is used as the server's verification of the form to avoid forgery attacks by hackers.

Let's modify our view and add fields:

@ Extends ('layout ') @ section ('content') Write a New Article
  {-- Use the illuminate \ html open source library we added --}}{!! 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 a form is submittedpostMethod submissionarticles/createBut according to the RESTful habits, we hopepostTo/articlesTo modify the Form method of the view and set the submission path.

{!! Form::open(['url' => 'articles']) !!}

Then we process the form submission event in the route.

Route::post('/articles', '[email protected]');

Let's process the controller.

// Note: delete the following use Statement. We use the Request // use App \ Http \ Requests \ Request in the facade interface; // introduce Requestuse Illuminate \ Support \ Facades \ Request; public function store () in the namespace below () {// use Illuminate \ Html \ Request to return all form input fields $ input = Request: all (); // we directly return $ input, return $ input ;}

We can directly see the json result of the input form. If you only needtitleField value, you can useRequest::get('titel').

How can I add it to a database? With the help of the model, we can directly use the following method,

Article::create($input);

It's so easy. if we don't forget the Mass Assignment, we define it in our model. $fillableArray to define the fields that can be directly stored in createWhen filling.

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. But don't forget. We also have a field calledpublished_at, Let's deal with it.

    public function store() {        $input = Request::all();        $input['published_at'] = Carbon::now();        Article::create($input);                return redirect('articles');    }

Add a new record in the test.

Another problem is that the newly added controller should be shown at the beginning. let's modify the following controller.

Public function index () {// Obtain the Article in reverse order // you can do this // $ articles = Article: orderBy ('hhed _ at', 'desc ') -> get (); // simple method. of course, there is also oldest () $ articles = Article: latest ('hhed _ at')-> get (); return view ('Articles. index', compact ('Articles '));}