Laravel 5 framework learning subviews and form reuse, laravel framework_PHP tutorial

Laravel 5 framework learning subviews and form reuse, laravel framework

We need to deal with the problem of editing articles. Of course we can add new routes manually, like this:

Copy code The code is as follows:
Route::get('/articles/{id}/edit', 'ArticleController@edit');

Let’s use artisan’s route:list on the command line to view our current routes:

Copy code The code is as follows:
php artisan route:list

In the case of RESTful compliance, it may be a good choice to directly use laravel's resource route. However, we will remove all routes and only add the only one:

Copy code The code is as follows:
Route::resource('articles', 'ArticlesController');

Use php artisan route:list again to view the routes. Wow, a bunch of routes that meet our expectations are generated. Look at each item carefully.

Now add method in controller:

  public function edit($id) {
    $article = Article::findOrFail($id);

    return view('articles.edit', compact('article'));
  }

Create the view now

@extends('layout')

@section('content')
  <h1>Edit: {!! $article->title !!} </h1>

  <hr/>

  ...

Okay, I admit that these codes were copied from create.blade.php and modified a bit. The question is do we need to repeat them? We will deal with this issue later, now let’s look at the form submission issue. In the route, php artisan route:list, look again, the modification uses the PATCH method, let’s modify the view:

Copy code The code is as follows:
{!! Form::open(['method' => 'PATCH', 'url' => 'articles/' . $article->id]) !!}

Visit /articles/1/edit in the browser, check the source code, and find that laravel automatically generates the hidden field of _method=PATCH.

The first problem is that we edit the article, but the information of the article is not displayed. Let’s modify the view:

Copy code The code is as follows:
{!! Form::model($article, ['method' => 'PATCH', 'url' => 'articles/' . $article->id]) !!}

OK, everything's ok, except that the published_on field is still set to the current date, we'll deal with that later.

Now add method in controller:

  public function update($id, \Illuminate\Http\Request $request) {
    $article = Article::findOrFail($id);
    $article->update($request->all());

    return redirect('articles');
  }

We also need to verify during the modification process. Let's reuse our Request class and rename CreateArticleRequest to the more general ArticleRequest. Don't forget to modify the parameters in the store method.

  public function update($id, Requests\ArticleRequest $request) {
    $article = Article::findOrFail($id);
    $article->update($request->all());

    return redirect('articles');
  }

The remaining problem now is that our new and edit use most of the same code, such as display errors, but there are two copies of them, let's fix this problem.

We create a new file list.blade.php directly under views/articles, and copy the error handling code from create.blade.php:

@if ($errors->any())
  <ul class="alert alert-danger">
    @foreach($errors->all() as $error)
      <li>{{ $error }}</li>
    @endforeach
  </ul>
@endif

In create.blade.php just replace the error handling code with the following statement:

Copy code The code is as follows:
@include('articles.list')

Let’s deal with the form code again. The form code is almost the same except for the form and the submit button. We create a view articles/form_partial.blade.php and copy the code

<div class="form-group">
  {!! Form::label('title', 'Title:') !!}
  {!! Form::text('title', null, ['class' => 'form-control']) !!}
</div>

<div class="form-group">
  {!! Form::label('body', 'Body:') !!}
  {!! Form::textarea('body', null, ['class' => 'form-control']) !!}
</div>

<div class="form-group">
  {!! Form::label('published_at', 'Publish On:') !!}
  {!! Form::input('date', 'published_at', date('Y-m-d'), ['class' => 'form-control']) !!}
</div>

<div class="form-group">
  {{--这里要设置变量，依据是编辑还是修改来改变，当然也可以不放置在partial中--}}
  {!! Form::submit($submitButtonText, ['class' => 'btn btn-primary form-control']) !!}
</div>

Modify create.blade.php

@extends('layout')

@section('content')
  <h1>Write a New Article</h1>

  <hr/>

  @include('articles.list')

  {{--使用我们添加的 illuminate\html 开源库--}}
  {!! Form::open(['url' => 'articles']) !!}
    @include('articles.form_partial', ['submitButtonText' => 'Add Article'])
  {!! Form::close() !!}

@stop

Modify edit.blade.php

@extends('layout')

@section('content')
  <h1>Edit: {!! $article->title !!} </h1>

  <hr/>

  @include('articles.list')
  {{--使用我们添加的 illuminate\html 开源库--}}
  {!! Form::model($article, ['method' => 'PATCH', 'url' => 'articles/' . $article->id]) !!}
  @include('articles.form_partial', ['submitButtonText' => 'Update Article'])

  {!! Form::close() !!}

@stop

The above is all the content introduced to you in this article. I hope it will help you master the Laravel5 framework.

http://www.bkjia.com/PHPjc/981359.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/981359.htmlTechArticleLaravel 5 framework learning subviews and form reuse, laravel framework we need to deal with the problem of editing articles. Of course we can add new routes manually, like this: Copy the code...