实验楼的laravel 4.2 blog 教程（五）

#1、文章管理

#创建视图

php artisan generate:view admin.articles.list

#修改views/admin/articles/list

@extends('_layouts.default')

@section('main')
<div class="am-g am-g-fixed blog-g-fixed">
  <div class="am-u-sm-12">
    <table class="am-table am-table-hover am-table-striped ">
    <thead>
    <tr>
      <th>Title</th>
      <th>Tags</th>
      <th>Author</th>
      <th>Managment</th>
    </tr>
    </thead>
    <tbody>
    @foreach ($articles as $article)
    <tr>
      <td><a href="{{ URL::route('article.show', $article->id) }}">{{{ $article->title }}}</a></td>
      <td>
      @foreach ($article->tags as $tag)
        <span class="am-badge am-badge-success am-radius">{{ $tag->name }}</span>
      @endforeach
      </td>
      <td><a href="{{ URL::to('user/' . $article->user->id . '/articles') }}">{{{ $article->user->nickname }}}</a></td>
      <td>
        <a href="{{ URL::to('article/'. $article->id . '/edit') }}" class="am-btn am-btn-xs am-btn-primary"><span class="am-icon-pencil"></span> Edit</a>
        {{ Form::open(array('url' => 'article/' . $article->id, 'method' => 'DELETE', 'style' => 'display: inline;')) }}
          <button type="button" class="am-btn am-btn-xs am-btn-danger" id="delete{{ $article->id }}"><span class="am-icon-remove"></span> Delete</button>
        {{ Form::close() }}
      </td>
    </tr>
    @endforeach
    </tbody>
  </table>
  </div>
</div>
<div class="am-modal am-modal-confirm" tabindex="-1" id="my-confirm">
  <div class="am-modal-dialog">
    <div class="am-modal-bd">
    </div>
    <div class="am-modal-footer">
      <span class="am-modal-btn" data-am-modal-cancel>No</span>
      <span class="am-modal-btn" data-am-modal-confirm>Yes</span>
    </div>
  </div>
</div>
<script>
  $(function() {
    $('[id^=delete]').on('click', function() {
      $('.am-modal-bd').text('Sure you want to delete it?');
      $('#my-confirm').modal({
        relatedTarget: this,
        onConfirm: function(options) {
          $(this.relatedTarget).parent().submit();
        },
        onCancel: function() {
        }
      });
    });
  });
</script>
@stop

#nav.blade.php 添加文章Users下面 链接 Article

<li class="{{ (isset($page) and ($page == 'articles')) ? 'am-active' : '' }}"><a href="{{ URL::to('admin/articles') }}">Articles</a></li>

#创建管理员控制器：

php artisan generate:controller AdminController

#在管理员控制器里面文章列表方法

class AdminController extends \BaseController {

    public function articles()
    {
        return View::make('admin.articles.list')->with('articles', Article::with('user', 'tags')->orderBy('created_at', 'desc')->get())->with('page', 'articles');
    }
}

#routes.php 在Route::group(array('prefix' => 'admin')中增加 显示文章列表路由

Route::get('articles', 'AdminController@articles');

管理文章可以重用上节教程写的业务逻辑，修改下ArticleController.php，把destroy()中最后的

Redirect::to('home')

改成

Redirect::back()

#再修改一下home.blade.php，加一个是否是管理员的判断，这样当点击作者跳转到用户主页时，除了作者自己管理员也能操作文章

@if ($user->id == Auth::id() or (Auth::check() and Auth::user()->is_admin))

#修改用户主页链接 admin/uses/list.blade.php、点击昵称时候跳到用户主页

<a href="{{ URL::to('user/' . $user->id . '/articles') }}">{{{ $user->nickname }}}</a>

#2、显示标签列表

#创建标签视图

php artisan generate:view admin.tags.list

#修改admin/tags/list.blade.php

@extends('_layouts.default')

@section('main')
<div class="am-g am-g-fixed blog-g-fixed">
  <div class="am-u-sm-12">
      <table class="am-table am-table-hover am-table-striped ">
      <thead>
      <tr>
        <th>TagName</th>
        <th>ArticleCount</th>
        <th>CreateDateTime</th>
        <th>Managment</th>
      </tr>
      </thead>
      <tbody>
        @foreach ($tags as $tag)
        <tr>
          <td>{{{ $tag->name }}}</td>
          <td>{{ $tag->count }}</td>
          <td>{{ $tag->created_at->format('Y-m-d H:i') }}</td>
          <td>
            <a href="{{ URL::to('tag/'. $tag->id . '/edit') }}" class="am-btn am-btn-xs am-btn-primary"><span class="am-icon-pencil"></span> Edit</a>
            {{ Form::open(array('url' => 'tag/' . $tag->id, 'method' => 'DELETE', 'style' => 'display: inline;')) }}
              <button type="button" class="am-btn am-btn-xs am-btn-danger" id="delete{{ $tag->id }}"><span class="am-icon-remove"></span> Delete</button>
            {{ Form::close() }}
          </td>
        </tr>
        @endforeach
      </tbody>
    </table>
  </div>
</div>
<div class="am-modal am-modal-confirm" tabindex="-1" id="my-confirm">
  <div class="am-modal-dialog">
    <div class="am-modal-bd">
    </div>
    <div class="am-modal-footer">
      <span class="am-modal-btn" data-am-modal-cancel>No</span>
      <span class="am-modal-btn" data-am-modal-confirm>Yes</span>
    </div>
  </div>
</div>
<script>
  $(function() {
    $('[id^=delete]').on('click', function() {
      $('.am-modal-bd').text('Sure you want to delete it?');
      $('#my-confirm').modal({
        relatedTarget: this,
        onConfirm: function(options) {
          $(this.relatedTarget).parent().submit();
        },
        onCancel: function() {
        }
      });
    });
  });
</script>
@stop

#在 nav.blade.php 的Users下面增加Tags选项

<li class="{{ (isset($page) and ($page == 'tags')) ? 'am-active' : '' }}"><a href="{{ URL::to('admin/tags') }}">Tags</a></li>

#在Route::group(array('prefix' => 'admin')中增加Tags 列表路由

Route::get('tags', 'AdminController@tags');

#在AdminController.php添加显示tags 方法

public function tags() 
{
    return View::make('admin.tags.list')->with('tags', Tag::where('count', '>', '0')->orderBy('count', 'desc')->orderBy('updated_at', 'desc')->get())->with('page', 'tags');
}

点击导航栏Tags 即显示Tags 列表

#3、修改标签

#创建标签视图

php artisan generate:view tags.edit

#修改标签编辑视图 views/tags/edit.blade.php

@extends('_layouts.default')

@section('main')
<div class="am-g am-g-fixed">
  <div class="am-u-sm-12">
      <h1>Edit Tag</h1>
      <hr/>
  @if (Session::has('message'))
    <div class="am-alert am-alert-{{ Session::get('message')['type'] }}" data-am-alert>
      <p>{{ Session::get('message')['content'] }}</p>
    </div>
  @endif
    @if ($errors->has())
    <div class="am-alert am-alert-danger" data-am-alert>
      <p>{{ $errors->first() }}</p>
    </div>
    @endif
    {{ Form::model($tag, array('url' => URL::route('tag.update', $tag->id), 'method' => 'PUT', 'class' => "am-form")) }}
        <div class="am-form-group">
        {{ Form::label('name', 'TagName') }}
        {{ Form::text('name', Input::old('name')) }}
        </div>
        <p><button type="submit" class="am-btn am-btn-success">
        <span class="am-icon-pencil"></span> Modify</button>
      </p>
    {{ Form::close() }}
  </div>
</div>
@stop

#创建标签控制器

php artisan generate:controller TagController

#修改标签控制器TagController.php

public function __construct()
{
    $this->beforeFilter('auth', array('only' => array('create', 'store', 'edit', 'update', 'destroy')));
    $this->beforeFilter('csrf', array('only' => array('store', 'update', 'destroy')));
}

public function edit($id)
{
    return View::make('tags.edit')->with('tag', Tag::find($id));
}

public function update($id)
{
    $rules = array(
        'name' => array('required', 'regex:/^\w+$/'),
    );
    $validator = Validator::make(Input::only('name'), $rules);
    if ($validator->passes()) {
        Tag::find($id)->update(Input::only('name'));
        return Redirect::back()->with('message', array('type' => 'success', 'content' => 'Modify tag successfully'));
    } else {
        return Redirect::back()->withInput()->withErrors($validator);
    }
}

#routes.php 添加tags资源路由

Route::resource('tag', 'TagController');

#4、删除标签

修改TagController.php

public function destroy($id)
{
    $tag = Tag::find($id);
    $tag->count = 0;
    $tag->save();
    foreach ($tag->articles as $article) {
        $tag->articles()->detach($article->id);
    }
    return Redirect::back();
}

我这里删除标签只是把它的文章数置为0，然后清除与相关文章的关联，你可以自己试下删除一个标签，再看看文章的标签是否去除了

#5、关联标签

在index.blade.php 的{{$tag->name}}、下面的{{$tag[$i]->name}}、articles/show.blade.php 的{{$tag->name}} 的a 标签添加链接

<a href="{{ URL::to('tag/' . $tag->id . '/articles') }}">{{ $tag->name }}</a>

#创建标签文章列表视图

php artisan generate:view articles.specificTag

#修改视图views/articles/specificTag.blade.php

@extends('_layouts.default')

@section('main')
<div class="am-g am-g-fixed">
  <div class="am-u-sm-12">
    <br/>
    <blockquote>Tag: <span class="am-badge am-badge-success am-radius">{{{ $tag->name }}}</span></blockquote>
      @foreach ($articles as $article)
      <article class="blog-main">
        <h3 class="am-article-title blog-title">
          <a href="{{ URL::route('article.show', $article->id) }}">{{{ $article->title }}}</a>
        </h3>
        <h4 class="am-article-meta blog-meta">
            by <a href="{{ URL::to('user/' . $article->user->id . '/articles') }}">{{{ $article->user->nickname }}}</a> posted on {{ $article->created_at->format('Y/m/d H:i') }} under 
            @foreach ($article->tags as $tag)
        <a href="{{ URL::to('tag/' . $tag->id . '/articles') }}" style="color: #fff;" class="am-badge am-badge-success am-radius">{{ $tag->name }}</a>
            @endforeach
        </h4>
        <div class="am-g">
          <div class="am-u-sm-12">
            @if ($article->summary)
          <p>{{ $article->summary }}</p>
            @endif
            <hr class="am-article-divider"/>
          </div>
        </div>
      </article>
      @endforeach
    {{ $articles->links() }}
  </div>
</div>
@stop

#在TagController.php添加显示文章列表方法

public function articles($id)
{
    $tag = Tag::find($id);
    $articles = $tag->articles()->orderBy('created_at', 'desc')->paginate(10);
    return View::make('articles.specificTag')->with('tag', $tag)->with('articles', $articles);
}

#routes.php 在资源路由Route::resource('tag', 'TagController'); 之上添加

Route::get('tag/{id}/articles', 'TagController@articles');

现在点击标签即跳转到该标签下的所有文章

#6、显示所有文章

创建显示所有标签视图

php artisan generate:view tags.list

#修改视图views/tags/list.blade.php

@extends('_layouts.default')

@section('main')
<div class="am-g am-g-fixed">
  <div class="am-u-sm-12">
    <h1>All Tags</h1>
    <hr/>
      @foreach ($tags as $tag)
    <a href="{{ URL::to('tag/' . $tag->id . '/articles') }}" class="am-badge am-radius {{ array('', 'am-badge-primary', 'am-badge-secondary', 'am-badge-success', 'am-badge-warning', 'am-badge-danger')[rand(0, 5)] }}">{{{ $tag->name }}} {{ $tag->count }}</a>
      @endforeach
    <br/>
    <br/>
  </div>
</div>
@stop

#在index.blade.php 右侧边蓝 Tags 改为路由链接

<a href="{{ URL::route('tag.index') }}">Tags</a>

#TagController.php 修改

public function index()
{
    return View::make('tags.list')->with('tags', Tag::where('count', '>', '0')->orderBy('count', 'desc')->orderBy('updated_at', 'desc')->get());
}

本节教程就到此结束了，这个博客系统想要实现的功能也基本完成了，下节开始将讲解优化、单元测试、部署和扩展开发等内容，你可以继续完善，例如在管理文章和标签的时候提供一个搜索功能，给它们都加上分页，在首页加上一个搜索文章的功能，给文章加上评论功能等等，在评论功能方面现在有很多第三方评论插件，可以快速帮你实现。

下载：git clone https://github.com/shiyanlou/laravel-blog-5.git

参照：https://www.shiyanlou.com/courses/document/418