symfony2验证程序：热身验证程序元数据

Question

似乎在执行cache:warmup命令时验证程序元数据未被预热。有没有办法预热缓存？

Answer 1

您可以创建一个将在缓存加温过程中调用的服务。

示例代码

// 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 } 

上实际是什么在热身的方法做，我就开始看这个http://api.symfony.com/2.3/Symfony/Component/Validator/ValidatorBuilder.html

特别法setMetadataCache()和setMetadataFactory()