laravel 5.5 以上使用laracasts/presenter

灰太狼 2021-10-01 08:24 255阅读 0赞

### composer 安装 ###

composer require laracasts/presenter

### 生成一个presenter命令 ###

php artisan make:command MakePresenter

该命令会在app/console/Commands目录下生成一个MakePresenter.php文件

### 自定义命令 ###

> app/console/Commands/MakePresenter.php

<?php
    
    namespace App\Console\Commands;
    
    use Illuminate\Console\GeneratorCommand;
    
    class MakePresenter extends GeneratorCommand
    {
        /**
         * The console command name.
         *
         * @var string
         */
        protected $name = 'make:presenter';
        
        /**
         * The console command description.
         *
         * @var string
         */
        protected $description = 'Create a new presenter class';
        
        /**
         * The type of class being generated.
         *
         * @var string
         */
        protected $type = 'Presenters';
        
        /**
         * Get the stub file for the generator.
         *
         * @return string
         */
        protected function getStub()
        {
            return __DIR__.'\Stubs\presenter.stub';
        }
        
        /**
         * Get the default namespace for the class.
         *
         * @param  string  $rootNamespace
         * @return string
         */
        protected function getDefaultNamespace($rootNamespace)
        {
            return $rootNamespace."\Presenters";
        }
    }

### 自定义一个presenter模板 ###

> app/console/Commands/Stubs/presenter.stub

<?php
    
    namespace DummyNamespace;
    
    use Laracasts\Presenter\Presenter;
    
    class DummyClass extends Presenter
    {
    
    }

### 执行命令 ###

php artisan make:presenter CategoryPresenter

运行成功后，会在app/Presenters目录下生成CategoryPresenter.php文件

> app/Presenters/CategoryPresenter.php

<?php
    
    namespace App\Presenters;
    
    use Laracasts\Presenter\Presenter;
    
    class CategoryPresenter extends Presenter
    {
        // 自定义方法
        public function fullName()
        {
           return $this->firstName.' · '.$this->lastName
        }
    }

### 使用 ###

在 `model` 中引入

> app/Models/Category

<?php
    
    namespace App\Models;
    
    use Illuminate\Database\Eloquent\Model;
    use Laracasts\Presenter\PresentableTrait;  // 引入PresentableTrait
    
    class Category extends Model
    {
        use PresentableTrait;
    
        protected $presenter = 'App\Presenters\CategoryPresenter';  // 绑定presenter
        
        protected $guarded = [];
    }

`blade`页面上使用

{!! $category->present()->fullName !!}