symfony2驗證程序：熱身驗證程序元數據

Question

似乎在執行cache:warmup命令時驗證程序元數據未被預熱。有沒有辦法預熱緩存？

Answer 1

您可以創建一個將在緩存加溫過程中調用的服務。

示例代碼

// src/Acme/MainBundle/Cache/ValidatorCacheWarmer.php 
namespace Acme\MainBundle\Cache; 

use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface; 

class ValidatorCacheWarmer implements CacheWarmerInterface 
{ 
    public function warmUp($cacheDir) 
    { 
     // ... do some sort of operations to "warm" your cache 
    } 

    public function isOptional() 
    { 
     return true; 
    } 
} 

services.yml

services: 
    main.warmer.validator_cache_warmer: 
     class: Acme\MainBundle\Cache\ValidatorCacheWarmer 
     tags: 
      - { name: kernel.cache_warmer, priority: 0 } 

上實際是什麼在熱身的方法做，我就開始看這個http://api.symfony.com/2.3/Symfony/Component/Validator/ValidatorBuilder.html

特別法setMetadataCache()和setMetadataFactory()