Laravel5.1 搭建博客 --構建標簽
阿新 • • 發佈：2017-10-09
dia field 使用 authorize endif mps prot btn tof
博客的每篇文章都是需要有標簽的，它與文章也是多對多的關系 這篇筆記也是記錄了實現標簽的步驟邏輯。
在我們之前的筆記中創建了Tag的控制器和路由了 所以這篇筆記不在重復
1 創建模型與遷移文件
遷移文件如下：
public function up() { Schema::create(‘tags‘, function (Blueprint $table) { $table->increments(‘id‘); // tag的名字 唯一 $table->string(‘tag‘)->unique();// tag的標題 $table->string(‘title‘); // tag副標題 $table->string(‘subtitle‘); // tag的圖片 $table->string(‘page_image‘); // tag的描述 $table->string(‘meta_description‘); // 要使用的布局 $table->string(‘layout‘)->default(‘blog.layouts.index‘); // 排序 $table->boolean(‘reverse_direction‘); $table->timestamps(); }); }
2 展示Tag
在TagController的index方法添加如下代碼：
public function index() { $tags = Tag::all(); return view(‘admin.tag.index‘)->withTags($tags); }
創建 index.blade.php 路徑是：views/admin/tag
@extends(‘admin.layout‘) @section(‘content‘) <div class="container-fluid"> <div class="row page-title-row"> <div class="col-md-6"> <h3>Tags <small>? Listing</small></h3> </div> <div class="col-md-6 text-right"> <a href="/admin/tag/create" class="btn btn-success btn-md"> <i class="fa fa-plus-circle"></i> New Tag </a> </div> </div> <div class="row"> <div class="col-sm-12"> @include(‘admin.partials.error‘) @include(‘admin.partials.success‘) <table id="tags-table" class="table table-striped table-bordered"> <thead> <tr> <th>Tag</th> <th>Title</th> <th class="hidden-sm">Subtitle</th> <th class="hidden-md">Page Image</th> <th class="hidden-md">Meta Description</th> <th class="hidden-md">Layout</th> <th class="hidden-sm">Direction</th> <th data-sortable="false">Actions</th> </tr> </thead> <tbody> @foreach ($tags as $tag) <tr> <td>{{ $tag->tag }}</td> <td>{{ $tag->title }}</td> <td class="hidden-sm">{{ $tag->subtitle }}</td> <td class="hidden-md">{{ $tag->page_image }}</td> <td class="hidden-md">{{ $tag->meta_description }}</td> <td class="hidden-md">{{ $tag->layout }}</td> <td class="hidden-sm"> @if ($tag->reverse_direction) Reverse @else Normal @endif </td> <td> <a href="/admin/tag/{{ $tag->id }}/edit" class="btn btn-xs btn-info"> <i class="fa fa-edit"></i> Edit </a> </td> </tr> @endforeach </tbody> </table> </div> </div> </div> @stop @section(‘scripts‘) <script> $(function() { $("#tags-table").DataTable({ }); }); </script> @stop
註意：在上面的代碼片段中我們運用了fontawesome和DataTable 可以自行用Bower和Gulp集成一下
3 創建Tag
在我們進入到創建視圖是需要自動填入一些默認值，可以這麽做：在TagController裏添加一個屬性fields數組：
protected $fields = [ ‘tag‘ => ‘‘, ‘title‘ => ‘‘, ‘subtitle‘ => ‘‘, ‘meta_description‘ => ‘‘, ‘page_image‘ => ‘‘, ‘layout‘ => ‘blog.layouts.index‘, ‘reverse_direction‘ => 0, ];
然後在create方法中運用：
public function create() { $data = []; foreach ($this->fields as $field => $default) { // 這裏使用old方法是因為如果驗證規則沒有通過的話 將之前填入的值返回給頁面 // 這樣就避免了一個問題:某個字段沒有通過規則要求 重定向回創建頁面時之前填入的數據不會消失。 $data[$field] = old($field, $default); } return view(‘admin.tag.create‘, $data); }
創建 create.blade.php 路徑是：views/admin/tag
@extends(‘admin.layout‘) @section(‘content‘) <div class="container-fluid"> <div class="row page-title-row"> <div class="col-md-12"> <h3>Tags <small>Create New Tag</small></h3> </div> </div> <div class="row"> <div class="col-md-8 col-md-offset-2"> <div class="panel panel-default"> <div class="panel-heading"> <h3 class="panel-title">New Tag From</h3> </div> <div class="panel-body"> @include(‘admin.partials.error‘) <form action="/admin/tag" method="post" role="form" class="form-horizontal"> <input type="hidden" name="_token" value="{{ csrf_token() }}"> <div class="form-group"> <label for="tag" class="col-md-3 control-label">Tag</label> <div class="col-md-3"> <input type="text" class="form-control" name="tag" id="tag" value="{{ $tag }}" autofocus> </div> </div> @include(‘admin.tag._form‘) <div class="form-group"> <div class="col-md-7 col-md-offset-3"> <button class="btn btn-primary btn-md" type="submit"> <i class="fa fa-plus-circle"></i> Add New Tag </button> </div> </div> </form> </div> </div> </div> </div> </div> @endsection
上面的代碼片段中include一個_form.blade.php 是因為有一段HTML是可以重復利用的
接下來就創建_form.blade.php：
<div class="form-group"> <label for="title" class="col-md-3 control-label"> Title </label> <div class="col-md-8"> <input type="text" class="form-control" name="title" id="title" value="{{ $title }}"> </div> </div> <div class="form-group"> <label for="subtitle" class="col-md-3 control-label"> Subtitle </label> <div class="col-md-8"> <input type="text" class="form-control" name="subtitle" id="subtitle" value="{{ $subtitle }}"> </div> </div> <div class="form-group"> <label for="meta_description" class="col-md-3 control-label"> Meta Description </label> <div class="col-md-8"> <textarea class="form-control" id="meta_description" name="meta_description" rows="3">{{ $meta_description }}</textarea> </div> </div> <div class="form-group"> <label for="page_image" class="col-md-3 control-label"> Page Image </label> <div class="col-md-8"> <input type="text" class="form-control" name="page_image" id="page_image" value="{{ $page_image }}"> </div> </div> <div class="form-group"> <label for="layout" class="col-md-3 control-label"> Layout </label> <div class="col-md-4"> <input type="text" class="form-control" name="layout" id="layout" value="{{ $layout }}"> </div> </div> <div class="form-group"> <label for="reverse_direction" class="col-md-3 control-label"> Direction </label> <div class="col-md-7"> <label class="radio-inline"> <input type="radio" name="reverse_direction" id="reverse_direction" @if (! $reverse_direction) checked="checked" @endif value="0"> Normal </label> <label class="radio-inline"> <input type="radio" name="reverse_direction" @if ($reverse_direction) checked="checked" @endif value="1"> Reversed </label> </div> </div>
創建一個Request：
class TagCreateRequest extends Request { /** * Determine if the user is authorized to make this request. * * @return bool */ public function authorize() { return true; } /** * Get the validation rules that apply to the request. * * @return array */ public function rules() { // 我們可以直接在rules中做一些驗證處理 這根Validate效果是一樣的 return [ ‘tag‘ => ‘required|unique:tags,tag‘, ‘title‘ => ‘required‘, ‘subtitle‘ => ‘required‘, ‘layout‘ => ‘required‘, ]; } }
實現store方法：
public function store(Requests\TagCreateRequest $request) { $tag = new Tag(); foreach (array_keys($this->fields) as $field) { $tag->$field = $request->get($field); } $tag->save(); return redirect(‘/admin/tag‘)->withSuccess(‘The tag "$tag->tag" was created‘); }
4 修改Tag
在TagController中添加如下代碼：
public function edit($id) { $tag = Tag::findOrFail($id); $data = [‘id‘ => $id]; foreach (array_keys($this->fields) as $key) { $data[$key] = old($key, $tag->$key); } return view(‘admin.tag.edit‘, $data); }
創建edit視圖：
@extends(‘admin.layout‘) @section(‘content‘) <div class="container-fluid"> <div class="row page-title-row"> <div class="col-md-12"> <h3>Tags <small>Edit Tag</small></h3> </div> </div> <div class="row"> <div class="col-md-8 col-md-offset-2"> <div class="panel panel-default"> <div class="panel-heading"> <h3 class="panel-title">Tag Edit Form</h3> </div> <div class="panel-body"> @include(‘admin.partials.error‘) @include(‘admin.partials.success‘) <form action="/admin/tag/{{ $id }}" class="form-horizontal" role="form" method="post"> <input type="hidden" name="_token" value="{{ csrf_token() }}"> <input type="hidden" name="id" value="{{ $id }}"> <input type="hidden" name="_method" value="put"> <div class="form-group"> <label for="tag" class="col-md-3 control-label">Tag</label> <div class="col-md-3"> <p class="form-control-static">{{ $tag }}</p> </div> </div> @include(‘admin.tag._form‘) <div class="form-group"> <div class="col-md-7 col-md-offset-3"> <button class="btn btn-primary btn-md" type="submit"> <i class="fa fa-save"></i> Save Changes </button> <button class="btn btn-danger btn-md" type="button" data-toggle="modal" data-target="#modal-delete"> <i class="fa fa-times-circle"></i> Delete </button> </div> </div> </form> </div> </div> </div> </div> </div> <div class="modal fade" id="modal-delete" tabindex="-1"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button class="close" type="button" data-dismiss="modal">x</button> <h4 class="modal-title">Please Confirm</h4> </div> <div class="modal-body"> <p class="lead"> <i class="fa fa-question-circle"></i> Are you sure you want to delete this tag? </p> </div> <div class="modal-footer"> <form action="/admin/tag/{{ $id }}" method="post"> <input type="hidden" name="_token" value="{{ csrf_token() }}"> <input type="hidden" name="_method" value="delete"> <button class="btn btn-default" data-dismiss="modal" type="button">Cancl</button> <button class="btn btn-danger" type="submit"> <i class="fa fa-times-circle"></i> Yes </button> </form> </div> </div> </div> </div> @endsection
同樣的 我們需要創建一個TagUpdateRequest：
class TagUpdateRequest extends Request { /** * Determine if the user is authorized to make this request. * * @return bool */ public function authorize() { return true; } /** * Get the validation rules that apply to the request. * * @return array */ public function rules() { return [ ‘title‘ => ‘required‘, ‘subtitle‘ => ‘required‘, ‘layout‘ => ‘required‘, ]; } }
然後在update方法中添加如下代碼：
public function update(Request $request, $id) { $tag = Tag::findOrFail($id); foreach (array_keys(array_except($this->fields, [‘tag‘])) as $field) { $tag->$field = $request->get($field); } $tag->save(); return redirect("/admin/tag/$id/edit")->withSuccess(‘Changes saved.‘); }
5 刪除Tag
我們在edit視圖中添加了刪除的表單 現在只需要實現以下TagController中的destroy方法就可以了：
public function destroy($id) { $tag = Tag::findOrFail($id); $tag->delete(); return redirect(‘/admin/tag‘)->withSuccess("The ‘$tag->tag‘ tag has been deleted."); }
6 其他
我們不需要實現show方法，因此我們需要把路由改成這樣：
Route::resource(‘tag‘, ‘TagController‘, [‘except‘ => ‘show‘]);
然後刪除TagController中的show方法就行了。
Laravel5.1 搭建博客 --構建標簽