laravel5.4新特性

時間 2019-12-14

標籤 laravel5.4 laravel 特性简体版

原文原文鏈接

http://www.cnblogs.com/webskill/category/1067140.htmlphp

laravel 5.4 新特性

component and slot

使用：html

1.component panellaravel

<article class="message">
  <div class="message-header">
    <p>Hello World</p>
    <button class="delete" aria-label="delete"></button>
  </div>
  <div class="message-body">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. <strong>Pellentesque risus mi</strong>, tempus quis placerat ut, porta nec nulla. Vestibulum rhoncus ac ex sit amet fringilla. Nullam gravida purus diam, et dictum <a>felis venenatis</a> efficitur. Aenean ac <em>eleifend lacus</em>, in mollis lectus. Donec sodales, arcu et sollicitudin porttitor, tortor urna tempor ligula, id porttitor mi magna a neque. Donec dui urna, vehicula et sem eget, facilisis sodales sem.
  </div>
</article>

2.其中header和body須要傳入變量git

<article class="message">
  <div class="message-header">
    <p>{{$title}}</p>
    <button class="delete" aria-label="delete"></button>
  </div>
  <div class="message-body">
    {{$content}}
  </div>
</article>

3.views.components.index 中須要引用component模版panelgithub

@component('components.panel')
    @slot('title')
        hello world
    @endslot
    @slot('content')
        have a nice day
    @endslot
@endcomponent

4.若是要傳入默認contentweb

panel.blade.php修改以下：ajax

<article class="message">
    <div class="message-header">
      <p>{{$title}}</p>
      <button class="delete" aria-label="delete"></button>
    </div>
    <div class="message-body">
      {{$slot}}
    </div>
  </article>

index.blade.php修改以下數據庫

@component('components.panel')
    @slot('title')
        hello world
    @endslot
        have a nice day
@endcomponent

//可多來幾個：

@component('components.panel')
    @slot('title')
        hello world
    @endslot
    have a nice day123
@endcomponent

5.還能夠這樣給默認值：title默認爲laraveljson

panel.blade.php修改以下：
  
     <article class="message">
        <div class="message-header">
          <p>{{$title ?? 'laravel'}}</p>
          <button class="delete" aria-label="delete"></button>
        </div>
        <div class="message-body">
          {{$slot}}
        </div>
      </article>
index.blade.php修改以下
    
    @component('components.panel')
            have a nice day
    @endcomponent

laravel 郵件

本文使用qq郵箱bootstrap

env郵件配置：

MAIL_FROM_ADDRESS = 17******92@qq.com
MAIL_FROM_NAME = listen~

MAIL_DRIVER=smtp
MAIL_HOST=smtp.qq.com
MAIL_PORT=465
MAIL_USERNAME=17*******2@qq.com
MAIL_PASSWORD= ****** //這個是你的qq受權碼
MAIL_ENCRYPTION=ssl
MAIL_ENCRYPTION=ssl

建立郵件類
```
php artisan make:mail welcomeToMiya
```

修改welcomeToMiya.php視圖

public function build()
     {
         return $this->view('email.welcome');
     }

使用

//發送郵件
     Route::get('/mail',function(){
         \Illuminate\Support\Facades\Mail::to('2861166132@qq.com')->send(new \App\Mail\welcomeToLaravist());
     });

傳參修改 welcomeToMiya.php

public $user;

     public function __construct(User $user)
     {
         $this->user = $user;
     }

傳參修改 web.php

//發送郵件
 Route::get('/mail',function(){
     $user = \App\User::find(1);
     \Illuminate\Support\Facades\Mail::to('2861166132@qq.com')->send(new \App\Mail\welcomeToLaravist($user));
 });

發郵件還能夠這樣：

public function sendTo($user,$subject,$view,$data){
        //也可使用Mail::send
        Mail::send($view,$data,function ($message) use ($user,$subject){
            $message->to($user->email)->subject($subject);
        });
    }

使用sendcloud:
參考github: https://github.com/NauxLiu/Laravel-SendCloud

notification 通知

= mail篇 ### =

public function via($notifiable)
{
    return ['mail'];
}

1.新建notification類

php artisan make:notification PostNotification

2.設置路由

//notification 注意默認發送到user模型中的email郵箱帳號 因此要確認user郵箱可用
Route::get('/notification',function(){
    $user = \App\User::find(1);
    $post = \App\Post::find(2);
    $user->notify(new \App\Notifications\PostNotification($post));
});

3.訪問/notification 收到郵件

4.經常使用設置方法 PostNotification.php

public function toMail($notifiable)
{
    return (new MailMessage)
        ->subject('A post published'.$this->post->title) //自定義主體
        ->success()  //定義按鈕顏色
                ->line('The introduction to the notification.')
                ->action('Notification Action', url('/'))
                ->line('Thank you for using our application!');
}

=database篇 ### =

將通知都存儲在數據庫裏

1.修改PostNotification.php

public function via($notifiable)
{
    //return ['mail'];
    return ['database'];
}

2.建立notification遷移文件

php artisan notifications:table
 php artisan migrate

3.PostNotification.php 中可添加 toDatabase方法若是沒寫的話默認用的是toArray方法

4.修改web.php

5.查看當前用戶下的notifications

6.新建一個notification

php artisan make:notification UserSubscribe

7.UserSubscribe.php 修改以下

public function via($notifiable)
{
    return ['database'];
}

/**
 * Get the array representation of the notification.
 *
 * @param  mixed  $notifiable
 * @return array
 */
public function toArray($notifiable)
{
    return [
        'subscribed_at' => Carbon::now()
    ];
}

8.修改web.php

//notification
Route::get('/notification', function () {
    $user = \App\User::find(1);
    $post = \App\Post::find(2);
    //$user->notify(new \App\Notifications\PostNotification($post));
    $user->notify(new \App\Notifications\UserSubscribe());
});

9.再次查看當前用戶的notifications

10.列出未讀notifications並標識爲已讀

web.php

//notification
Route::get('/show-notification', function () {
    return view('notifications.index');
});

//標識未讀
Route::delete('user/notification',function (){
    Auth::user()->unreadNotifications->markAsRead();
    return redirect()->back();
});

notifications.index.blade

@extends('app')

@section('content')
    <h1>個人通知：</h1>
    <ul>
    @foreach(Auth::user()->unreadNotifications as $notification)
        @include('notifications/'.snake_case( class_basename($notification->type) ))
    @endforeach
    </ul>
    <form action="/user/notification" method="POST">
        {{csrf_field()}}
        {{method_field('DELETE')}}
        <input type="submit" value="標識已讀">
    </form>
@stop

user_subscribe.blade.php

<h2>user</h2>
{{$notification->data['subscribed_at']['date']}}

post_notification.blade.php

<h2>post</h2>
<li>{{$notification->data['title']}}</li>

標識某條已讀

$user->refresh()->unreadNotifications->where('id','57bb0e0e-8d35-4da8-850b-121a5317c9b9')->first()->markAsRead();

總結：

database

php artisan make:notification someNotification
對於須要傳入的參數作修改例如依賴模式 Post $post
php artisan notification:table
獲取notification $user->notifications
標識已讀全部的 $user->unreadNotifications->markAsRead()
單條標識：$user->refresh()->unreadNotifications->where('id','57bb0e0e-8d35-4da8-850b-121a5317c9b9')->first()->markAsRead();

laravel 郵件使用markdown

php artisan make:mail lessonPublished --markdown="emails.published"

這個命令不只建立了email類文件還生成了視圖文件並把視圖也寫好了 return $this->markdown('emails.published'')
可根據須要修改也可修改email markdown模版 php artisan vendor:publish

發送郵件

Route::get("sendmail",function(){
    $email = new \App\Mail\LessionPublished(\App\User::first());
    Mail::to(\App|User::first())->send($email);
})

toggle

toggle方法主要用於多對多關係中,attach detach 好比點贊收藏

1.user表

2.post表 title content

3.中間表 favoriate user_id post_id

4.user中定義關係

public function favorites(){
        return $this->belongsToMany(Post::class,'favoriates'); //第二個參數中間表
    }

5.關聯關係

作法一：

在tinker中操做

$user = App\User::find(1);
$post = App\Post::find(2);
$user->favorite()->attach($post);
查看結果：$user->refresh()->favorite

//取消收藏
 $user->favorite()->detach($post);

作法二：toggle 不用去判斷用戶有沒有收藏該文章用戶收藏了則取消收藏反之則收藏

$user->favorite()->toggle($post);

實時facade

建立一個目錄叫services
建立一個weibo類

<?php
 namespace App\Services;
 class weibo
 {
     protected $http;

     public function __construct(Http $http)
     {
         $this->http = $http;
     }

     public function publish($status){
         $this->http->post($status);
     }
 }

建立一個Http類

<?php
namespace App\Services;
class Http
{
    public function __construct()
    {
    }

    public function post($status){
        return dd('I post a post'.$status);
    }
}

路由修改

use Facades\App\Services\weibo;

//facade
Route::get('facade',function (){
   weibo::publish('這是一條微博');
});

如今訪問就有了："I post a post這是一條微博"

事件監聽

方法一：
web.php

Event::listen('eloquent.created: App\post',function(){
    dump('A post was created');
});

Route::get('/event53',function(){
    \App\post::create(['title'=>'Title','content'=>'My Body']);
});

方法二：

註釋掉

Event::listen('eloquent.created: App\post',function(){
        dump('A post was created');
    });

post模型中定義事件

<?php

namespace App;

use App\Events\PostWasPublished;
use Illuminate\Database\Eloquent\Model;

class post extends Model
{
    protected $guarded = array();
    protected $events = [
       'created' => PostWasPublished::class
    ];
}

修改EventServiceProvider.php 中的$listen屬性建立事件和事件監聽文件

protected $listen = [
    'App\Events\PostWasPublished' => [
        'App\Listeners\PostWasPublishedListener',
    ],
];

執行 php artisan event:generate

** 還能夠依賴注入 **

App\Events\PostWasPublished.php

public $post;

public function __construct($post)
{
    $this->post = $post;
}

App\Listeners\PostWasPublishedListener.php

public function handle(PostWasPublished $event)
     {
         dump($event->post->toArray());
     }

方法三：普通路由觸發event

app/Providers/EventServiceProvider.php

protected $listen = [
        'App\Events\UserSignUp' => [
            'App\Listeners\UserSignUpListener',
        ],
    ];

UserSignUp.php

use App\User;
 public $user;
 public function __construct(User $user)
 {
     $this->user = $user;
 }

UserSignUpListener.php

public function handle(UserSignUp $event)
{
    dd($event->user->name);
}

web.php

Route::get('/eventroute',function(){
    $user = \App\User::find(1);
   event(new \App\Events\UserSignUp($user));
});

console command

php artisan make:command hello

進入app/console/commands/hello.php

修改singniture和handle

protected $signature = 'lara:hello';

public function handle()
    {
        $this->info('hello my girl');
    }

app/console/kernel.php $commands屬性修改添加剛纔的類

App\Console\Commands\hello::class

傳參：php artisan lara:hello alice

protected $signature = 'lara:hello{name＝Bool}'; //? 無關緊要
protected $signature = 'lara:hello{name＝Bool}'; //? 無關緊要

 public function handle()
    {
        $this->info('hello my girl '.$this->argument('name'));
    }

默認值：protected $signature = 'lara:hello{name=Bool}';

定時任務

新建一個test.sh

#!/bin/bash
 
 echo "hello world";
 
 php test.php

test.php

this is a test for crontab

$ cronatab -e

* * * * * /var/www/test.sh 2>&1 >> /var/www/test.log

laravel 定時任務：

$ php artisan make:conmmand logInfo

修改 ap/console/command/logInfo.php

protected $description = 'log Info';
 public function handle()
    {
        Log::info('It works');
    }

kernel中註冊 app/console/kernel.php

protected $commands = [
        //
        hello::class,
        logInfo::class
    ];

    /**
     * Define the application's command schedule.
     *
     * @param  \Illuminate\Console\Scheduling\Schedule  $schedule
     * @return void
     */
    protected function schedule(Schedule $schedule)
    {
         $schedule->command('log:info')
                  ->everyMinute();
    }    

$ crontab -e 
* * * * * php /var/www/lara/leaning/artisan schedule:run >> /dev/null 2>&1

middleware

php artisan make:middleware isAdminMiddleware

user表增長is_admin字段值爲 Y/N

模型user.php

public function isAdmin(){
        return  $this->is_admin == 1;
 }

修改isAdminMiddleware

public function handle($request, Closure $next)
{
    info( $request->user()); //等價於 Auth::user()
    if($request->user() && $request->user()->isAdmin()){
        return $next($request);
    }
    return redirect('/');
}

web.php

Auth::loginUsingId(2);

Route::group(['prefix'=>'admin','middleware'=>'isAdmin'],function (){
    Route::get('users',function (){
        return 'admin only';
    });
});

controller中能夠這樣設置

public function __construct(){
    $this->middleware('admin',['only'=>['store','update']]);
}

app/Http/Kernel.php

protected $routeMiddleware = [
        'isAdmin' => isAdminMiddleware::class
    ];
}

視圖綁定變量

app下新建一個類 Status

<?php

namespace App;

class Status
{
    public function total(){
        return 45;
    }
}

路由之前的作法是這樣

Route::get('/status',function(\App\Status $status){
    return view('status',compact('status'));
});

status.blade.php

<h1>Status</h1>

{{$status->total()}}

模板綁定變量這樣寫：

路由：不傳遞任何變量

Route::get('/status',function(){
    return view('status');
});

模板中注入變量：status.blade.php

@inject('status','App\Status')

本地化Model Factory

tinker:

factory(User::class,5)->create() //會寫庫
//或 
factory(User::class,5)->make() //不會寫庫

App/Providers/AppServiceProvider.php

use Faker\Generator as FakerGenerator;
use Faker\Factory as FakerFactory;

 public function boot()
    {
        $this->app->singleton(FakerGenerator::class,function (){
            return FakerFactory::create('zh_CN');
        });
    }

再次用tinker生成的數據就是中文的了

DB::table('users')->truncate() 會將user表的數據所有刪除

分頁

路由：

Route::get('/lessons',function(){
    $lessons = \App\Lesson::paginate(15);
    return view('lessons',compact('lessons'));
});

模板

@extends('app')

@section('content')
    <h1>Lessons</h1>
    @foreach($lessons->chunk(3) as $row)
    <div class="row">
        @foreach($row as $lesson)
            <div class="col-md-4">
                <h2>{{ $lesson->title  }}</h2>
                <img style="width:100%; " src="{{$lesson->imageUrl}}" alt="">
                <div class="body">
                    {{$lesson->intro}}
                </div>
            </div>
        @endforeach
    </div>
    @endforeach

    {!! $lessons->render() !!}
    {{ $lessons->appends(['type'=>'article'])->links('vendor.pagination.bootstrap-4')  }}
@stop

分頁兩種方式均可以

{!! $lessons->render() !!}
{{ $lessons->appends(['type'=>'article'])->links('vendor.pagination.bootstrap-4') }}

造測試數據給article分配userId

$factory->define(\App\Article::class, function (Faker\Generator $faker) {
    $userIds= \App\User::pluck('id')->toArray();
    return [
        'title' => $faker->sentence,
        'content' => $faker->paragraph,
        'user_id' => $faker->randomElements($userIds)[0]
    ];
});

find 能夠傳入 id 也能夠傳入數組

App\User::find([2,3])

with eager loading

user.php

public function posts(){
    return $this->hasMany(Post::class)
 }

路由：獲取當前用戶下的全部post

這裏的post只的就是對應的關係
 $posts = \App\User::with('posts')->get()

多態關聯

應用場景：評論屬於文章屬於lesson

php artisan make:model comment -m

comment migration

public function up()
    {
        Schema::create('comments', function (Blueprint $table) {
            $table->increments('id');
            $table->integer('commentable_id');
            $table->string('commentable_type');
            $table->text('body');
            $table->timestamps();
        });
    }

comment.php 模型

class comment extends Model
 {
     public function commentable(){
         return $this->morphTo();
     }
 }

post.php 模型

use App\comment;
 class post extends Model
 {
     protected $guarded = array();
     protected $events = [
        'created' => PostWasPublished::class
     ];
     public function comments(){
         return $this->morphMany(comment::class,'commentable');
     }
 }

lesson.php 模型

class Lesson extends Model
{
    protected $guarded = array();

    public function comments(){
        return $this->morphMany(comment::class,'commentable');
    }
}

使用：

給某個lesson添加評論

$lesson = App\Lesson::find(1);
  $lesson->unguard();
  $lesson->comments()->create(["body"=>"nice lesson"]);

經過評論來查看屬於哪一個post

$comment = App\comment::find(1);
  $comment->commentable

有用的小方法

dd( $article->created_at->diffForHumans() ); //幾分鐘前
Config::get('database.default');
app('config')['database']['default']
Hash::make('password')
app('hash')->make('password')
config('services')
\Auth::login($user) //自動登陸
Auth::check() //檢查是否登陸
密碼;bcrypt(str_random(16))
model中設置 $hidden = ['title'] //有時您可能想要限制能出如今數組或 JSON 格式的屬性數據，好比密碼字段。只要在模型裏增長 hidden 屬性便可

acl權限

AuthServiceProvider.php

public function boot()
    {
        $this->registerPolicies();

        Gate::define('show-post',function ($user,$article){
            return $user->id ###  $article->user_id;
        });
    }

controller.php 測試當前用戶是否有權限（當前post的id是不是當前用戶）訪問當前post,若是沒權限訪問則報錯403

public function show($id){
        $article = Article::findOrFail($id);
        //dd( $article->created_at->diffForHumans() );

        //12 minits ago 若是須要中文能夠
        //能夠在app/Providers/AppServiceProvider.php的boot()方法加上：
        //\Carbon\Carbon::setLocale('zh');

        if(Gate::denies('show-post',$article)){
            abort(403,'sorry');
        };

        //也能夠這麼寫
       // $this->authorize('show-post',$article);

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

若是要在blade中運用則所有註釋掉

public function show($id){
            $article = Article::findOrFail($id);
            //dd( $article->created_at->diffForHumans() );
    
            //12 minits ago 若是須要中文能夠
            //能夠在app/Providers/AppServiceProvider.php的boot()方法加上：
            //\Carbon\Carbon::setLocale('zh');
    
            //if(Gate::denies('show-post',$article)){
            //abort(403,'sorry');
            //};
    
            //也能夠這麼寫
           // $this->authorize('show-post',$article);
    
            return view('articles.show',compact('article'));
     }

模版中使用

@extends('app')
        
        @section('content')
            <h2>{{$article->title}}</h2>
            <div>{{$article->content}}</div>
        
            @can('show-post',$article)
                <a href="">編輯</a>
            @endcan
        
    @stop

使用policy

policy的使用是爲了更方便的建立用戶權限規則避免了在AuthServiceProvider中定義一長串的規則

php artisan make:policy ArticlePolicy

添加policy 規則：

public function editArticle($user,$article){
           return $user->id ###  $article->user_id;
       }

AuthServiceProvider.php中註冊該ArticlePolicy

protected $policies = [
           'App\Article' => 'App\Policies\ArticlePolicy',
       ];

控制器使用：

if(Gate::denies('editArticle',$article)){
                   abort(403,'sorry');
                   };

模版中使用：

@extends('app')
                
            @section('content')
                <h2>{{$article->title}}</h2>
                <div>{{$article->content}}</div>
            
                @can('editArticle',$article)
                    <a href="">編輯</a>
                @endcan
            
            @stop

用戶權限

php artisan make:model Permission
php artisan make:model Role
php artisan make:migration create_roles_table --create=roles

編輯遷移文件：

public function up()
    {
        Schema::create('roles', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');//admin.member
            $table->string('label')->nullable();//註冊會員
            $table->timestamps();
        });
        Schema::create('permissions', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');//admin.member
            $table->string('label')->nullable();//註冊會員
            $table->timestamps();
        });
        Schema::create('permission_role', function (Blueprint $table) {
            $table->integer('permission_id')->unsigned();
            $table->integer('role_id')->unsigned();

            $table->foreign('permission_id')
                    ->references('id')
                    ->on('permissions')
                    ->onDelete('cascade');

            $table->foreign('role_id')
                ->references('id')
                ->on('roles')
                ->onDelete('cascade');

            $table->primary(['permission_id','role_id']);
        });
        Schema::create('role_user', function (Blueprint $table) {
            $table->integer('user_id')->unsigned();
            $table->integer('role_id')->unsigned();

            $table->foreign('user_id')
                ->references('id')
                ->on('users')
                ->onDelete('cascade');

            $table->foreign('role_id')
                ->references('id')
                ->on('roles')
                ->onDelete('cascade');

            $table->primary(['user_id','role_id']);

        });
    }

定義關係:

role.php

public function permissions(){
return $this->belongsToMany(Permission::class);
}
public function givePermission(Permission $permission){
return $this->permissions()->save($permission);
}

permission.php

public function roles(){
      return $this->belongsToMany(Role::class);
  }

user.php

public function roles(){
          return $this->belongsToMany(Role::class);
      }

      public function hasRole($role){
          //若是傳入的是字符串
          if( is_string($role) ){
              return $this->roles->contains('name',$role);
          }
          //若是傳入的是collection  intersect 只的是 $role 和 $this->roles()有沒有交集
          return !!$role->intersect( $this->roles )->count();
      }

tinker 建立一個role 一個permission 並把permission指派給這個role

$role->givePermission($permission)

    也能夠直接

    $role->permissions()->save($permission)

    $user->roles()->save($role) 給用戶分配角色
    $user->roles()->detach($role) 刪除角色

authServiceProvider.php

public function boot()
          {
              $this->registerPolicies();
      
              foreach ( $this->getPermission() as $permission ){
                  Gate::define( $permission->name,function (User $user) use($permission){
                      return $user->hasRole($permission->roles);
                  });
              }
          }
          protected function getPermission(){
              return Permission::with('roles')->get();
          }

blade中這樣使用：

@can('edit')
           <a href="">編輯edit</a>
    @endcan

service container:

class Barz{}

class Foo{
    public $bar;

    public function __construct(Barz $barz)
    {
        $this->bar = $barz;
    }
}
//若是有app綁定的優先找綁定的
App::bind('Foo',function (){
    dd(12);
    return new Foo(new BarZ());
});
Route::get('container',function (Foo $foo){
    dd($foo);
});

App綁定後路由裏再也不須要依賴注入

Route::get('container1',function (){
    dd(app('Foo'));
});

service實戰向IOC 容器添加本身的類

添加一個本身的類

App\Services\Billing\Stripe.php

<?php 
namespace App\Services\Billing;
class Stripe
{
    public function charge(){
        dd('charged') ;
    }
}

新建一個provider

php artisan make:provider BillingServiceProvider

注入服務 BillingServiceProvider.php , 注意要在app.php中注入這個provider

public function register()
      {
          $this->app->bind('billing',function(){
              return new Stripe();
          });
      }

訪問兩種方法都可：

Route::get('container2',function (){
      dd(app('billing')->charge());
  });

  //或

  Route::get('container2',function (\App\Services\Billing\Stripe $stripe){
      dd($stripe->charge());
  });

結合interface

重構代碼:

定義接口：App\Billing\BillingInterface.php
public function charge(array $data);

定義類：App\Biling\PingBilling.php

class PingBilling implements BillingInterface{
      public function charge($data){
          //todo
      }
  }

聲明serviceprovider 把PingBilling這個類放到ioc container中 BillingServiceProvider

$this->app->bind('billing','App\Biling\PingBilling')

app.php 添加 BillingServiceProvider

控制器中調用 app('billing')->charge($data)

=facade### =

每一個facade例如 Route 類返回的其實都是個字符串，關鍵是繼成了Facade類, Facade有個 __callStatic 方法，在一個類中執行一個不存在的靜態方法時該方法會被觸發

Facade.php

public static function __callStatic($method, $args)
    {
        $instance = static::getFacadeRoot();

        if (! $instance) {
            throw new RuntimeException('A facade root has not been set.');
        }

        return $instance->$method(...$args);
    }

__callStatic 執行了 $instance = static::getFacadeRoot(); 生成一個實例，解析的結果是 app('mailer')

public static function getFacadeRoot()
    {
    //static::getFacadeAccessor() 指的就是 mailer,    這句解析的結果就是 app('mailer') 其實就是Mailer這個類，到這裏就必然有個provider綁定mailer 可在provider中查找
        return static::resolveFacadeInstance(static::getFacadeAccessor());
    }

目標:我但願我建立一個AjaxResponse的facade，這樣能直接在controller中這樣使用：

\AjaxResponse::success();

{
    code: "0"
    result: {

    }
}

步驟：

step1: 在app/Services文件夾中建立類

<?php namespace App\Services;

  class AjaxResponse {

      protected function ajaxResponse($code, $message, $data = null)
      {
          $out = [
              'code' => $code,
              'message' => $message,
          ];

          if ($data !== null) {
              $out['result'] = $data;
          }

          return response()->json($out);
      }

      public function success($data = null)
      {
          $code = ResultCode::Success;
          return $this->ajaxResponse(0, '', $data);
      }

      public function fail($message, $extra = [])
      {
          return $this->ajaxResponse(1, $message, $extra);
      }
  }

這個AjaxResponse是具體的實現類

step2: 建立provider

<?php namespace App\Providers;

  use Illuminate\Support\ServiceProvider;

  class AjaxResponseServiceProvider extends ServiceProvider {

      public function register()
      {
          $this->app->singleton('AjaxResponseService', function () {
              return new \App\Services\AjaxResponse();
          });
      }
  }

這裏咱們在register的時候定義了這個Service名字爲AjaxResponseService

step3:在app/Facades文件夾中建立類

<?php namespace App\Facades;

  use Illuminate\Support\Facades\Facade;

  class AjaxResponseFacade extends Facade {

      protected static function getFacadeAccessor() { return 'AjaxResponseService'; }

  }

step4:好了，下面咱們只須要到app.php中掛載上這兩個東東就能夠了

<?php

  return [

      ...

      'providers' => [
          ...
          'App\Providers\RouteServiceProvider',

          'App\Providers\AjaxResponseServiceProvider',

      ],


      'aliases' => [
          ...

          'Validator' => 'Illuminate\Support\Facades\Validator',
          'View'      => 'Illuminate\Support\Facades\View',

          'AjaxResponse' => 'App\Facades\AjaxResponseFacade',

      ],

  ];

使用name和email登陸

postLogin 方法：

$field = filter_var($request->input('username'), FILTER_VALIDATE_EMAIL) ? 'email' : 'username';
    $request->merge([$field => $request->get('username')]);

if(Auth::guard('admin')->attempt( $request->only($field, 'password'),
        $request->remember)
    ){
        //if successful,then intend the user to their intended location
        return redirect()->intended(route('admin.dashboard'));
    }else{
        //if unsuccessful,then redirect back to the login with the form data
        return redirect()->back()->withInput($request->only('username','remember'));
    }

api

$lessons = Lesson::all();
\Response::json([
    'status' => 'success',
    'status_code' => 200,
    'data'   => $lessons->toArray()
]);

= 字段映射 ### =

$lessons = Lesson::all();
\Response::json([
    'status' => 'success',
    'status_code' => 200,
    'data'   => $this->transform($lessons->toArray())
]);

public function transform($lessons){
    return array_map(function($lesson){
        return [
            'title' => $lesson['title'],
            'content' => $lesson['body'],
            'is_free' => (boolean)$lesson['free']
        ];
    },$lessons);
}

注意這個transform 是處理 collection的數據 all()
若是要處理elequent model 好比 Lesson::find(1)這樣的數據須要這麼處理transform方法,collection 用transformCollection方法：

public function transformCollection($lessons){
    return array_map([$this,'transform'],$lessons);
}

public function transform($lesson){
    return [
            'title' => $lesson['title'],
            'content' => $lesson['body'],
            'is_free' => (boolean)$lesson['free']
        ];
}

= 代碼重構 ### =

好比有個article也須要使用transform

新建一個類 App\Transformer\Transformer.php

<?php

  namespace App\Transformer;

  abstract class Transformer
  {
      /**
       * @param $items
       * @return array
       */
      public function transformCollection($items){
          return array_map([$this,'transform'],$items);
      }

      /**
       * @param $item
       * @return mixed
       */
      public abstract function transform($item);//抽象方法不用寫大括號
  }

新建LessonTransform 並繼承Transformer類 App\Transformer\LessonTransform .php

<?php

namespace App\Transformer;

  class LessonTransformer extends Transformer
  {
      /**
       * @param $lesson
       * @return array
       */
      public function transform($lesson){
          return [
              'title' => $lesson['title'],
              'content' => $lesson['intro']
          ];
      }
  }

Lesson控制器中依賴注入並調用Transformer中的方法

protected $lessonTransformer;

public function __construct(LessonTransformer $lessonTransformer)
  {
      $this->lessonTransformer = $lessonTransformer;
  }
  /**
   * Display a listing of the resource.
   *
   * @return \Illuminate\Http\Response
   */
  public function index()
  {
      $lessons = Lesson::all();
      return \Response::json([
          'status' => 'success',
          'status_code' => 200,
          'data'   => $this->lessonTransformer->transformCollection($lessons->toArray())
      ]);
  }

  public function show($id)
  {
      $lesson = Lesson::find($id);
      return \Response::json([
          'status' => 'success',
          'status_code' => 200,
          'data'   => $this->lessonTransformer->transform($lesson)
      ]);
  }

= 錯誤提示 ### =

1.新建一個ApiController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class ApiController extends Controller
{
    protected $statusCode = 200;

    /**
     * @return int
     */
    public function getStatusCode(): int
    {
        return $this->statusCode;
    }

    /**
     * @param int $statusCode
     */
    public function setStatusCode(int $statusCode)
    {
        $this->statusCode = $statusCode;
        return $this;
    }
    public function responseNotFound( $message = 'Not Found' ){
        return $this->responseError($message);
    }
    private function responseError($message){
        return $this->response([
            'status' => 'fail',
            'status_code' => $this->getStatusCode(),
            'message' => $message
        ]);
    }
    public function response($data){
        return \Response::json($data);
    }
}

2.控制器:LessonController.php 集成ApiController.php

public function show($id)
    {
        $lesson = Lesson::find($id);
        if( !$lesson ) {
           return  $this->setStatusCode(500)->responseNotFound();
        }
        return $this->response([
            'status' => 'success',
            'data'   => $this->lessonTransformer->transform($lesson)
        ]);
    }

這時候訪問 transformer/2689 就會返回ApiController中的錯誤信息

{
    "status": "fail",
    "status_code": 404,
    "message": "Not Found"
}

= postman禁用token ### =

app\kernel.php 註釋掉verifyCsrfToken.php

api驗證有三種：

= auth.basic 基礎驗證### =

控制器構造方法中：

public function __construct(){
    $this->middleware('auth.basic'，['only'=>['store','update']]);
}

laravel 有用的小方法

[http://www.cnblogs.com/webskill/p/7463488.html ]

laravel package

根目錄下新建目錄 packages/Laravist/Hasher/src
composer 自動加載並設置命名空間

"autoload": {
"classmap": [
"database/seeds",
"database/factories"
],
"psr-4": {
"App\": "app/",
"Laravist\Hasher\":"package/Laravist/Hasher/src/"
}
},

src下新建一個類：Md5Hasher.php

<?php
 namespace Laravist\Hasher;
 class Md5hasher
 {
     public function make($value,array $options = []){
         $salt = isset($options['salt']) ? $options['salt'] : '';
         return hash('md5',$value.$salt);
     }
     public function check($value,$hashvalue,array $options = []){
         $salt = isset($options['salt']) ? $options['salt'] : '';
         return hash('md5',$value.$salt) ###  $hashvalue;
     }
 }

加載這個類：
php artisan make:provider Md5HashProvider 移到 src下

Md5HashProvider 中註冊使用方法：

public function register()
     {
         $this->app->singleton('md5hash',function (){
             return new Md5hasher();
         });
     }

tinker中使用
```
app('md5hasher')->make('password')
```

自定義錯誤提示

resources/lang/en/validation.php

找到custom

將
'custom' => [
'attribute-name' => [
'rule-name' => 'custom-message',
],
],
改爲:
'custom' => [
'name' => [
'required' => '用戶名不能爲空',
],
],

使用第三方插件 markdown

hyperDown github上找到Parser.php app下新建文件 App\Markdown\Parser.php 注意命名空間

App\Markdown\Markdown.php

<?php

namespace App\Markdown;


class Markdown
{
    protected $parser;

    public function __construct(Parser $parser)
    {
        $this->parser = $parser;
    }
    public function markdown($text){
         $html = $this->parser->makeHtml($text);
         return $html;
    }
}


composer dump-autoload

控制器中使用

protected $markdown;
     public function __construct(Markdown $markdown)
     {
         $this->markdown = $markdown;
         $this->middleware('auth',['only'=>['create','store','edit','update']]);
     }
 public function show($id)
     {
         $discussion = Discussion::findOrFail($id);
         $html = $this->markdown->markdown($discussion->body) ;
         return view('forum.detail',compact('discussion','html'));
     }

view中使用
{!! $html !!}

storage

圖片上傳使用 storage_path('app/public') 這種的時候默認圖片上傳到 storage/app/public 下面 , 須要 php artisan storage:link 鏈到 public目錄下

模糊查詢

$topics = \App\Topic::select(['id','name'])
    ->where('name','like','%'.$request->query('q').'%')
    ->get();

helper

App下建 Support/hellper.php

好比 Auth::guard('api')->user()->id 用的很是多，把它作成helper

helper.php

<?php

if(!!function_exists('user')){
    function user($driver=null){
        if ($driver){
            return app('auth')->guard($driver)->user();
        }
        return app('auth')->user();
    }
}

composer.json

"autoload": {
        "files":[
          "App/Support/helper.php"
        ],
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App\\": "app/"
        }
    },

可直接在控制器或blade中使用 user() 或者 user('api')

with 和 wherehas

with: 選擇全部的model, 每一個model 關聯的translations 根據條件進行過濾,結果只有 title like $query 的translations不爲空, 其餘model的translations爲空

return $this->model->with([
        'translations' => function($q)use($query){
            $q->where('title','like',"%{$query}%")
            ->select('product_id','title');
        }
    ])

wherehas: 選出知足條件的 model, 不是全部的model

$this->model->whereHas('translations', function($q)use($query){
              $q->where('title', 'like', "%{$query}%");
    })->get();

相關標籤/搜索

每日一句

每一个你不满意的现在，都有一个你没有努力的曾经。

laravel5.4新特性

laravel 5.4 新特性

component and slot

laravel 郵件

notification 通知

= mail篇 ### =

=database篇 ### =

總結：

laravel 郵件使用markdown

toggle

實時facade

事件監聽

console command

定時任務

middleware

視圖綁定變量

本地化Model Factory

分頁

造測試數據 給article分配userId

find 能夠傳入 id 也能夠傳入數組

with eager loading

多態關聯

有用的小方法

acl權限

使用policy

用戶權限

service container:

service實戰 向IOC 容器添加本身的類

結合interface

=facade### =

使用name和email登陸

api

= 字段映射 ### =

= 代碼重構 ### =

= 錯誤提示 ### =

= postman禁用token ### =

= auth.basic 基礎驗證### =

laravel 有用的小方法

laravel package

自定義錯誤提示

使用第三方插件 markdown

storage

模糊查詢

helper

with 和 wherehas

造測試數據給article分配userId

service實戰向IOC 容器添加本身的類