laravel5.4新特性

时间 2019-12-14

标签 laravel5.4 laravel 特性繁體版

原文原文链接

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须要传入变量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 中须要引用component模版panelgithub

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

4.若是要传入默认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修改以下数据库

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

//可多来几个：

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

5.还能够这样给默认值：title默认为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 邮件

本文使用qq邮箱bootstrap

env邮件配置：

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= ****** //这个是你的qq受权码
MAIL_ENCRYPTION=ssl
MAIL_ENCRYPTION=ssl

建立邮件类
```
php artisan make:mail welcomeToMiya
```

修改welcomeToMiya.php视图

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

使用

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

传参修改 welcomeToMiya.php

public $user;

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

传参修改 web.php

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

发邮件还能够这样：

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:
参考github: https://github.com/NauxLiu/Laravel-SendCloud

notification 通知

= mail篇 ### =

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

1.新建notification类

php artisan make:notification PostNotification

2.设置路由

//notification 注意默认发送到user模型中的email邮箱帐号 因此要确认user邮箱可用
Route::get('/notification',function(){
    $user = \App\User::find(1);
    $post = \App\Post::find(2);
    $user->notify(new \App\Notifications\PostNotification($post));
});

3.访问/notification 收到邮件

4.经常使用设置方法 PostNotification.php

public function toMail($notifiable)
{
    return (new MailMessage)
        ->subject('A post published'.$this->post->title) //自定义主体
        ->success()  //定义按钮颜色
                ->line('The introduction to the notification.')
                ->action('Notification Action', url('/'))
                ->line('Thank you for using our application!');
}

=database篇 ### =

将通知都存储在数据库里

1.修改PostNotification.php

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

2.建立notification迁移文件

php artisan notifications:table
 php artisan migrate

3.PostNotification.php 中可添加 toDatabase方法若是没写的话默认用的是toArray方法

4.修改web.php

5.查看当前用户下的notifications

6.新建一个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.再次查看当前用户的notifications

10.列出未读notifications并标识为已读

web.php

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

//标识未读
Route::delete('user/notification',function (){
    Auth::user()->unreadNotifications->markAsRead();
    return redirect()->back();
});

notifications.index.blade

@extends('app')

@section('content')
    <h1>个人通知：</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="标识已读">
    </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>

标识某条已读

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

总结：

database

php artisan make:notification someNotification
对于须要传入的参数作修改例如依赖模式 Post $post
php artisan notification:table
获取notification $user->notifications
标识已读全部的 $user->unreadNotifications->markAsRead()
单条标识：$user->refresh()->unreadNotifications->where('id','57bb0e0e-8d35-4da8-850b-121a5317c9b9')->first()->markAsRead();

laravel 邮件使用markdown

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

这个命令不只建立了email类文件还生成了视图文件并把视图也写好了 return $this->markdown('emails.published'')
可根据须要修改也可修改email markdown模版 php artisan vendor:publish

发送邮件

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

toggle

toggle方法主要用于多对多关系中,attach detach 好比点赞收藏

1.user表

2.post表 title content

3.中间表 favoriate user_id post_id

4.user中定义关系

public function favorites(){
        return $this->belongsToMany(Post::class,'favoriates'); //第二个参数中间表
    }

5.关联关系

作法一：

在tinker中操做

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

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

作法二：toggle 不用去判断用户有没有收藏该文章用户收藏了则取消收藏反之则收藏

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

实时facade

建立一个目录叫services
建立一个weibo类

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

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

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

建立一个Http类

<?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('这是一条微博');
});

如今访问就有了："I post a post这是一条微博"

事件监听

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：

注释掉

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

post模型中定义事件

<?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属性建立事件和事件监听文件

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

执行 php artisan event:generate

** 还能够依赖注入 **

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：普通路由触发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

进入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属性修改添加刚才的类

App\Console\Commands\hello::class

传参：php artisan lara:hello alice

protected $signature = 'lara:hello{name＝Bool}'; //? 无关紧要
protected $signature = 'lara:hello{name＝Bool}'; //? 无关紧要

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

默认值：protected $signature = 'lara:hello{name=Bool}';

定时任务

新建一个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 定时任务：

$ php artisan make:conmmand logInfo

修改 ap/console/command/logInfo.php

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

kernel中注册 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表增长is_admin字段值为 Y/N

模型user.php

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

修改isAdminMiddleware

public function handle($request, Closure $next)
{
    info( $request->user()); //等价于 Auth::user()
    if($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中能够这样设置

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

app/Http/Kernel.php

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

视图绑定变量

app下新建一个类 Status

<?php

namespace App;

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

路由之前的作法是这样

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

status.blade.php

<h1>Status</h1>

{{$status->total()}}

模板绑定变量这样写：

路由：不传递任何变量

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

模板中注入变量：status.blade.php

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

本地化Model Factory

tinker:

factory(User::class,5)->create() //会写库
//或 
factory(User::class,5)->make() //不会写库

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生成的数据就是中文的了

DB::table('users')->truncate() 会将user表的数据所有删除

分页

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

分页两种方式均可以

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

造测试数据给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 能够传入 id 也能够传入数组

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

with eager loading

user.php

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

路由：获取当前用户下的全部post

这里的post只的就是对应的关系
 $posts = \App\User::with('posts')->get()

多态关联

应用场景：评论属于文章属于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：

给某个lesson添加评论

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

经过评论来查看属于哪一个post

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

有用的小方法

dd( $article->created_at->diffForHumans() ); //几分钟前
Config::get('database.default');
app('config')['database']['default']
Hash::make('password')
app('hash')->make('password')
config('services')
\Auth::login($user) //自动登陆
Auth::check() //检查是否登陆
密码;bcrypt(str_random(16))
model中设置 $hidden = ['title'] //有时您可能想要限制能出如今数组或 JSON 格式的属性数据，好比密码字段。只要在模型里增长 hidden 属性便可

acl权限

AuthServiceProvider.php

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

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

controller.php 测试当前用户是否有权限（当前post的id是不是当前用户）访问当前post,若是没权限访问则报错403

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

        //12 minits ago 若是须要中文能够
        //能够在app/Providers/AppServiceProvider.php的boot()方法加上：
        //\Carbon\Carbon::setLocale('zh');

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

        //也能够这么写
       // $this->authorize('show-post',$article);

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

若是要在blade中运用则所有注释掉

public function show($id){
            $article = Article::findOrFail($id);
            //dd( $article->created_at->diffForHumans() );
    
            //12 minits ago 若是须要中文能够
            //能够在app/Providers/AppServiceProvider.php的boot()方法加上：
            //\Carbon\Carbon::setLocale('zh');
    
            //if(Gate::denies('show-post',$article)){
            //abort(403,'sorry');
            //};
    
            //也能够这么写
           // $this->authorize('show-post',$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="">编辑</a>
            @endcan
        
    @stop

使用policy

policy的使用是为了更方便的建立用户权限规则避免了在AuthServiceProvider中定义一长串的规则

php artisan make:policy ArticlePolicy

添加policy 规则：

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

AuthServiceProvider.php中注册该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="">编辑</a>
                @endcan
            
            @stop

用户权限

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

编辑迁移文件：

public function up()
    {
        Schema::create('roles', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');//admin.member
            $table->string('label')->nullable();//注册会员
            $table->timestamps();
        });
        Schema::create('permissions', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name');//admin.member
            $table->string('label')->nullable();//注册会员
            $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']);

        });
    }

定义关系:

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($role){
          //若是传入的是字符串
          if( is_string($role) ){
              return $this->roles->contains('name',$role);
          }
          //若是传入的是collection  intersect 只的是 $role 和 $this->roles()有没有交集
          return !!$role->intersect( $this->roles )->count();
      }

tinker 建立一个role 一个permission 并把permission指派给这个role

$role->givePermission($permission)

    也能够直接

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

    $user->roles()->save($role) 给用户分配角色
    $user->roles()->detach($role) 删除角色

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中这样使用：

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

service container:

class Barz{}

class Foo{
    public $bar;

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

App绑定后路由里再也不须要依赖注入

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

service实战向IOC 容器添加本身的类

添加一个本身的类

App\Services\Billing\Stripe.php

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

新建一个provider

php artisan make:provider BillingServiceProvider

注入服务 BillingServiceProvider.php , 注意要在app.php中注入这个provider

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

访问两种方法都可：

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

  //或

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

结合interface

重构代码:

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

定义类：App\Biling\PingBilling.php

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

声明serviceprovider 把PingBilling这个类放到ioc container中 BillingServiceProvider

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

app.php 添加 BillingServiceProvider

控制器中调用 app('billing')->charge($data)

=facade### =

每一个facade例如 Route 类返回的其实都是个字符串，关键是继成了Facade类, Facade有个 __callStatic 方法，在一个类中执行一个不存在的静态方法时该方法会被触发

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 执行了 $instance = static::getFacadeRoot(); 生成一个实例，解析的结果是 app('mailer')

public static function getFacadeRoot()
    {
    //static::getFacadeAccessor() 指的就是 mailer,    这句解析的结果就是 app('mailer') 其实就是Mailer这个类，到这里就必然有个provider绑定mailer 可在provider中查找
        return static::resolveFacadeInstance(static::getFacadeAccessor());
    }

目标:我但愿我建立一个AjaxResponse的facade，这样能直接在controller中这样使用：

\AjaxResponse::success();

{
    code: "0"
    result: {

    }
}

步骤：

step1: 在app/Services文件夹中建立类

<?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);
      }
  }

这个AjaxResponse是具体的实现类

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();
          });
      }
  }

这里咱们在register的时候定义了这个Service名字为AjaxResponseService

step3:在app/Facades文件夹中建立类

<?php namespace App\Facades;

  use Illuminate\Support\Facades\Facade;

  class AjaxResponseFacade extends Facade {

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

  }

step4:好了，下面咱们只须要到app.php中挂载上这两个东东就能够了

<?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登陆

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);
}

注意这个transform 是处理 collection的数据 all()
若是要处理elequent model 好比 Lesson::find(1)这样的数据须要这么处理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']
        ];
}

= 代码重构 ### =

好比有个article也须要使用transform

新建一个类 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);//抽象方法不用写大括号
  }

新建LessonTransform 并继承Transformer类 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控制器中依赖注入并调用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)
      ]);
  }

= 错误提示 ### =

1.新建一个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)
        ]);
    }

这时候访问 transformer/2689 就会返回ApiController中的错误信息

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

= postman禁用token ### =

app\kernel.php 注释掉verifyCsrfToken.php

api验证有三种：

= auth.basic 基础验证### =

控制器构造方法中：

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

根目录下新建目录 packages/Laravist/Hasher/src
composer 自动加载并设置命名空间

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

src下新建一个类：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;
     }
 }

加载这个类：
php artisan make:provider Md5HashProvider 移到 src下

Md5HashProvider 中注册使用方法：

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

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

自定义错误提示

resources/lang/en/validation.php

找到custom

将
'custom' => [
'attribute-name' => [
'rule-name' => 'custom-message',
],
],
改为:
'custom' => [
'name' => [
'required' => '用户名不能为空',
],
],

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 注意命名空间

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

图片上传使用 storage_path('app/public') 这种的时候默认图片上传到 storage/app/public 下面 , 须要 php artisan storage:link 链到 public目录下

模糊查询

$topics = \App\Topic::select(['id','name'])
    ->where('name','like','%'.$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: 选择全部的model, 每一个model 关联的translations 根据条件进行过滤,结果只有 title like $query 的translations不为空, 其余model的translations为空

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

wherehas: 选出知足条件的 model, 不是全部的model

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

laravel5.4新特性

laravel 5.4 新特性

component and slot

laravel 邮件

notification 通知

= mail篇 ### =

=database篇 ### =

总结：

laravel 邮件使用markdown

toggle

实时facade

事件监听

console command

定时任务

middleware

视图绑定变量

本地化Model Factory

分页

造测试数据 给article分配userId

find 能够传入 id 也能够传入数组

with eager loading

多态关联

有用的小方法

acl权限

使用policy

用户权限

service container:

service实战 向IOC 容器添加本身的类

结合interface

=facade### =

使用name和email登陆

api

= 字段映射 ### =

= 代码重构 ### =

= 错误提示 ### =

= postman禁用token ### =

= auth.basic 基础验证### =

laravel 有用的小方法

laravel package

自定义错误提示

使用第三方插件 markdown

storage

模糊查询

helper

with 和 wherehas

造测试数据给article分配userId

service实战向IOC 容器添加本身的类