從零開始系列-Laravel編寫api服務介面：10.transformer

簡介

返回值一般採用dingo的 transformer，新版用source的方法。
只要定義好模型關聯之後就可以用include自由包含所需要的物件（陣列）了

include全部採用駝峰法命名！否則會出大問題！

如果是單個物件則用$this->response->item($obj, new xxxTransformer())

多個物件包含用$this->response->collection($objs, new xxxTransformer())

可以編寫命令檔案生成transformer

1.新建 app/Console/Commands/stubs/transformer.stub

<?php

namespace DummyNamespace;

use League\Fractal\TransformerAbstract;

class DummyClass extends TransformerAbstract
{
    protected $availableIncludes = [];
    public function transform(Obj $obj)
    {
        return [

        ];
    }
}

2.新建命令檔案

php artisan make:command MakeTransformer

<?php

namespace App\Console\Commands;


use Illuminate\Console\GeneratorCommand;

class MakeTransformer extends GeneratorCommand
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $name = 'make:transformer';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'create a new transformer class';

    protected $type = 'Transformer';
    /**
     * Get the stub file for the generator.
     *
     * @return string
     */
    protected function getStub()
    {
        return __DIR__.'/stubs/transformer.stub';
    }

    /**
     * Get the default namespace for the class.
     *
     * @param string $rootNamespace
     * @return string
     */
    protected function getDefaultNamespace($rootNamespace)
    {
        return $rootNamespace.'\Transformers';
    }
}

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