Laravel 5框架学习之子视图和表单复用_PHP
我们需要处理编辑文章的问题。当然我们可以手工添加新的路由,就像这样:
代码如下:
Route::get('/articles/{id}/edit', 'ArticleController@edit');
让我们在命令行下使用 artisan 的 route:list 来查看我们当前的路由:
代码如下:
php artisan route:list
在符合 RESTful 的情况下,可能直接使用 laravel 的 resource 路由是一种好的选择,然我们将所有的路由都去掉,只添加唯一的一个:
代码如下:
Route::resource('articles', 'ArticlesController');
再次使用 php artisan route:list 查看路由,哇,一堆的符合我们期望的路由产生了。每一项都仔细查看一下。
现在在控制器中添加方法:
public function edit($id) { $article = Article::findOrFail($id); return view('articles.edit', compact('article')); }
现在创建视图
@extends('layout') @section('content') <h1 id="Edit-article-title">Edit: {!! $article->title !!} </h1> <hr/> ...
好吧,我承认这些代码都是从 create.blade.php 中拷贝出来的,修改了一下,问题是我们需要重复吗?后面我们会处理这个问题,现在来看一下表单的提交问题。在路由中 php artisan route:list ,再看一遍,修改使用了 PATCH 方法,我们来修改视图:
代码如下:
{!! Form::open(['method' => 'PATCH', 'url' => 'articles/' . $article->id]) !!}
在浏览器中访问 /articles/1/edit ,查看一下源代码,发现laravel自动生成了 _method=PATCH 的隐藏字段。
一问题是,我们编辑文章,但是文章的信息并没有显示出来,我们修改一下视图:
代码如下:
{!! Form::model($article, ['method' => 'PATCH', 'url' => 'articles/' . $article->id]) !!}
OK,everything's ok,除了 published_on 字段仍然设置为当前日期,后面我们来处理。
现在在控制器中添加方法:
public function update($id, \Illuminate\Http\Request $request) { $article = Article::findOrFail($id); $article->update($request->all()); return redirect('articles'); }
我们在修改的过程中也需要验证,让我们复用我们的 Request 类,将 CreateArticleRequest 更名为更通用的 ArticleRequest,别忘了修改 store 方法中的参数。
public function update($id, Requests\ArticleRequest $request) { $article = Article::findOrFail($id); $article->update($request->all()); return redirect('articles'); }
现在剩下的问题是我们的新建和编辑使用了大部分相同的代码,比如显示错误,但他们存在两份,我们来修改这个问题。
我们直接在 views/articles 下面新建文件 list.blade.php,并把错误处理代码从 create.blade.php 中拷贝出来:
@if ($errors->any()) <ul class="alert alert-danger"> @foreach($errors->all() as $error) <li>{{ $error }}</li> @endforeach </ul> @endif
在 create.blade.php 只需用下面语句替换错误处理代码即可:
代码如下:
@include('articles.list')
让我们再来处理表单代码,表单代码中除了 form 不大一样和提交按钮有区别,其他都差不多。我们创建一个视图 articles/form_partial.blade.php,将代码拷贝出来
<div class="form-group"> {!! Form::label('title', 'Title:') !!} {!! Form::text('title', null, ['class' => 'form-control']) !!} </div> <div class="form-group"> {!! Form::label('body', 'Body:') !!} {!! Form::textarea('body', null, ['class' => 'form-control']) !!} </div> <div class="form-group"> {!! Form::label('published_at', 'Publish On:') !!} {!! Form::input('date', 'published_at', date('Y-m-d'), ['class' => 'form-control']) !!} </div> <div class="form-group"> {{--这里要设置变量,依据是编辑还是修改来改变,当然也可以不放置在partial中--}} {!! Form::submit($submitButtonText, ['class' => 'btn btn-primary form-control']) !!} </div>
修改 create.blade.php
@extends('layout') @section('content') <h1 id="Write-a-New-Article">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
修改 edit.blade.php
@extends('layout') @section('content') <h1 id="Edit-article-title">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
以上就是本文给大家介绍的全部内容了,希望能够对大家熟练掌握Laravel5框架有所帮助。

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