爲什麼我用這些Zend_Application_Resources得到循環依賴異常？

Question

我一直得到了新的資源林進行以下的異常，我不能找出原因：

PHP Fatal error: Uncaught exception 'Zend_Application_Bootstrap_Exception' with message 'Circular resource dependency detected' in /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php:656 
Stack trace: 
#0 /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php(623): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource('modules') 
#1 /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php(580): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap('modules') 
#2 /Library/WebServer/Documents/doctrine-dev/library/APP/Doctrine/Application/Resource/Doctrine.php(36): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap('modules') 
#3 /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php(708): APP_Doctrine_Application_Resource_Doctrine->__construct(Array) 
#4 /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php(349): Zend_Application_Bootstrap_BootstrapAbstract->_loadPluginResource('doctrine', Array) 
#5 /opt/local/lib/php/Zend/Application/Bootstrap/Bootstra in /opt/local/lib/php/Zend/Application/Bootstrap/BootstrapAbstract.php on line 656 

正如你會看到下面的香港專業教育學院創建了一個學說的資源，應該在一般的應用引導只能加載。爲了執行它的任務，它需要啓動模塊資源 ，因此它調用$this->getBootstrap()->bootstrap('modules')。雖然模塊資源從來沒有調用過學說，這似乎是我得到循環依賴的地方。我試過目前在我的Doctrine資源的構造函數中的代碼也直接作爲init的一部分，而且看起來也不起作用。對我來說，更大的謎團是，如果我在致電$bootstrap->bootstrap('doctrine')之前自己打電話給$bootstrap->bootstrap('modules') ，這一切似乎都很好。那麼爲什麼會有循環參考問題？

的application.xml中

<resources> 
    <frontController> 
     <controllerDirectory><zf:const zf:name="APPLICATION_PATH" />/controllers</controllerDirectory> 
     <moduleDirectory><zf:const zf:name="APPLICATION_PATH" />/modules</moduleDirectory> 
     <moduleControllerDirectoryName value="controllers" /> 
    </frontController> 
    <modules prefixModuleName="Mod" configFilename="module.xml"> 
     <enabledModules> 
      <default /> 
      <doctrinetest /> 
      <cms> 
       <myOption value="Test Option Value" /> 
      </cms> 
      <menu somevar="menu" /> 
      <article somevar="article" /> 
     </enabledModules> 
    </modules> 
    <doctrine> 
     <connections> 
      <default dsn="mysql://#####:#####@localhost/#####"> 
       <attributes useNativeEnum="1" /> 
      </default> 
     </connections> 
     <attributes> 
      <autoAccessorOverride value="1" /> 
      <autoloadTableClasses value="1" /> 
      <modelLoading value="MODEL_LOADING_PEAR" /> 
     </attributes> 
     <directoryNames> 
      <sql value="data/sql" /> 
      <fixtures value="data/fixtures" /> 
      <migrations value="data/migrations" /> 
      <yaml value="configs/schemas" /> 
      <models value="models" /> 
     </directoryNames> 
    </doctrine> 
</resources> 

學說資源

<?php 

class APP_Doctrine_Application_Resource_Doctrine extends Zend_Application_Resource_ResourceAbstract 
{ 
    protected $_manager = null; 
    protected $_modules = array(); 
    protected $_attributes = null; 
    protected $_connections = array(); 
    protected $_defaultConnection = null; 
    protected $_directoryNames = null; 
    protected $_inflectors = array(); 



    public function __construct($options = null) 
    { 

     parent::__construct($options); 
     $bootstrap = $this->getBootstrap();  


     $autoloader = $bootstrap->getApplication()->getAutoloader(); 

     $autoloader->pushAutoloader(array('Doctrine_Core', 'autoload'), 'Doctrine'); 
     spl_autoload_register(array('Doctrine_Core', 'modelsAutoload')); 

     $manager = $this->getManager(); 
     $manager->setAttribute('bootstrap', $bootstrap); 

     // default module uses the application bootstrap unless overridden! 
     $modules = array('default' => $bootstrap); 

     if(!isset($options['useModules']) || 
      (isset($options['useModules']) && (boolean) $options['useModules'])) 
     { 
      $moduleBootstraps = $bootstrap->bootstrap('modules')->getResource('modules'); 
      $modules = array_merge($modules, $moduleBootstraps->getArrayCopy()); 
     }        

     $this->setModules($modules); // configure the modules 
     $this->_loadModels(); // load all the models for Doctrine 
    } 

    public function init() 
    { 
     return $this->getManager(); 
    } 

    public function setConnections(array $connections) 
    { 
     $manager = $this->getManager(); 

     foreach($connections as $name => $config) 
     { 
      if(isset($config['dsn'])) 
      { 
       $conn = $manager->connection($config['dsn'], $name);   
      } 

      if(isset($config['attributes']) && isset($conn)) 
      { 
       $this->setAttributes($config['attributes'], $conn);  
      } 
     } 

     return $this; 
    } 

    public function setAttributes(array $attributes, Doctrine_Configurable $object = null) 
    { 
     if($object === null) 
     { 
      $object = $this->getManager(); 
     } 

     foreach($attributes as $name => $value) 
     { 
      $object->setAttribute(
       $this->doctrineConstant($name, 'attr'), 
       $this->doctrineConstant($value) 
      ); 
     } 

     return $this; 
    } 

    public function setModules(array $modules) 
    { 
     //$this->_modules = $modules; 

     foreach($modules as $name => $bootstrap) 
     { 
      $this->_modules[$name] = $this->_configureModuleOptions($bootstrap); 
     } 

     return $this; 
    } 

    public function setDirectoryNames(array $directoryNames) 
    { 
     $this->_directoryNames = $directoryNames; 

     return $this; 
    } 

    public function getDirectoryNames() 
    { 
     return $this->_directoryNames; 
    } 

    public function getDirectoryName($key) 
    { 
     if(isset($this->_directoryNames[$key])) 
     { 
      return $this->_directoryNames[$key]; 
     } 

     return null; 
    } 

    public function getModuleOptions($module = null) 
    { 
     if($module === null) 
     { 
      return $this->_modules; 
     } 

     if(isset($this->_modules[$module])) 
     { 
      return $this->_modules[$module]; 
     } 

     return null; 
    } 

    public function doctrineConstant($value, $prefix = '') 
    { 
     if($prefix !== '') 
     { 
      $prefix .= '_'; 
     } 

     $const = $this->_getConstantInflector()->filter(array(
      'prefix'=>$prefix, 
      'key' => $value 
     )); 

     $const = constant($const); 
     return $const !== null ? $const : $value; 
    } 

    /** 
    * getManager 
    * @return Doctrine_Manager 
    */ 
    public function getManager() 
    { 
     if(!$this->_manager) 
     { 
      $this->_manager = Doctrine_Manager::getInstance(); 
     } 

     return $this->_manager; 
    } 

    protected function _getConstantInflector() 
    { 
     if(!isset($this->_inflectors['constant'])) 
     { 
      $callback = new Zend_Filter_Callback(array('callback'=>'ucfirst')); 
      $this->_inflectors['constant'] = new Zend_Filter_Inflector(
       'Doctrine_Core::#prefix#key', 
       array(
        ':prefix' => array($callback, 'Word_CamelCaseToUnderscore', 'StringToUpper'), 
        ':key' => array('Word_SeparatorToCamelCase', 'Word_CamelCaseToUnderscore', 'StringToUpper') 
       ), null, '#'); 
     } 

     return $this->_inflectors['constant']; 
    } 

    protected function _configureModuleOptions(Zend_Application_Bootstrap_BootstrapAbstract $bootstrap) 
    { 
     $coreBootstrapClass = get_class($this->getBootstrap()); 

     if(get_class($bootstrap) === $coreBootstrapClass) 
     { 
      // handled differently 
      $resourceLoader = $bootstrap->bootstrap('DefaultAutoloader')->getResource('DefaultAutoloader'); 
      $moduleName = $resourceLoader->getNamespace(); 
     } 
     else 
     { 
      // handle a module bootstrap 
      $resourceLoader = $bootstrap->getResourceLoader(); 
      $moduleName = $bootstrap->getModuleName(); 
     } 

     $resourceTypes = $resourceLoader->getResourceTypes(); 
     $modelResource = isset($resourceTypes['model']) 
      ? $resourceTypes['model'] 
      : array('path'=>'models', 'namespace'=>'Model'); 

     $modulePath = $resourceLoader->getBasePath(); 

     $classPrefix = $modelResource['namespace']; 
     $modelsPath = $modelResource['path']; 

     $doctrineOptions = array(
      'generateBaseClasses'=>TRUE, 
      'generateTableClasses'=>TRUE, 
      'baseClassPrefix'=>'Base_', 
      'baseClassesDirectory'=> NULL, 
      'baseTableClassName'=>'Doctrine_Table', 
      'generateAccessors' => true, 
      'classPrefix'=>"{$classPrefix}_", 
      'classPrefixFiles'=>FALSE, 
      'pearStyle'=>TRUE, 
      'suffix'=>'.php', 
      'phpDocPackage'=> $moduleName, 
      'phpDocSubpackage'=>'Models', 
     ); 

     $doctrineConfig = array(
      'data_fixtures_path' => "$modulePath/{$this->getDirectoryName('fixtures')}", 
      'models_path' => "$modelsPath", 
      'migrations_path' => "$modulePath/{$this->getDirectoryName('migrations')}", 
      'yaml_schema_path' => "$modulePath/{$this->getDirectoryName('yaml')}", 
      'sql_path' => "$modulePath/{$this->getDirectoryName('sql')}", 
      'generate_models_options' => $doctrineOptions 
     ); 

     return $doctrineConfig; 
    } 

    protected function _loadModels() 
    { 
     $moduleOptions = $this->getModuleOptions(); 

     foreach($moduleOptions as $module => $options) 
     { 
      Doctrine_Core::loadModels(
       $options['models_path'], 
       Doctrine_Core::MODEL_LOADING_PEAR, 
       $options['generate_models_options']['classPrefix'] 
      ); 
     } 

     return $this; 
    } 
} 

模塊資源

<?php 
class APP_Application_Resource_Modules extends Zend_Application_Resource_Modules 
{ 
    protected $_prefixModuleNames = false; 
    protected $_moduleNamePrefix = null; 
    protected $_defaultModulePrefix = 'Mod'; 
    protected $_configFileName = 'module.xml'; 
    protected $_enabledModules = null; 

    public function __construct($options = null) 
    { 
     if(isset($options['prefixModuleName'])) 
     { 
      if(($prefix = APP_Toolkit::literalize($options['prefixModuleName'])) 
       !== false) 
      { 
       $this->_prefixModuleNames = true; 
       $this->_moduleNamePrefix = is_string($prefix) 
        ? $prefix 
        : $this->_defaultModulePrefix; 
      } 
     } 

     if(isset($options['configFileName'])) 
     { 
      $this->_configFileName = $options['configFileName']; 
     } 


     parent::__construct($options); 
    } 

    protected function _mergeModuleConfigs(array $applicationConfig) 
    { 
     $cacheManager = $this->_getCacheManager(); 

     if(isset($applicationConfig['resources']['modules']['enabledModules'])) 
     { 
      $applicationModulesOptions = &$applicationConfig['resources']['modules']; 
      $enabledModules = &$applicationModulesOptions['enabledModules']; 

      $front = $this->getBootstrap()->getResource('frontcontroller'); 

      foreach($enabledModules as $moduleName => $moduleOptions) 
      { 

       // cache testing 
       // note cache keys for modules are prefixed if prefix is enabled @see _formatModuleName 
       if(!$cacheManager->test('config', $this->_formatModuleName($moduleName))) 
       { 

        $configPath = $front->getModuleDirectory($moduleName).'/configs/'.$this->getConfigFilename(); 

        if(file_exists($configPath)) 
        { 
         if(strpos($configPath, ".xml") === false) 
         { 
          throw new Exception(__CLASS__." is only compatible with XML configuration files."); 
         } 

         $config = new Zend_Config_Xml($configPath); 
         $enabledModules[$moduleName] = array_merge((array) $moduleOptions, $config->toArray()); 

         //$this->setOptions($options); 
         $cacheManager->save('config', $enabledModules[$moduleName], $this->_formatModuleName($moduleName)); 
        } 
       } 
       else 
       { 
        $options = $cacheManager->load('config', $this->_formatModuleName($moduleName)); 
        $enabledModules[$moduleName] = array_merge((array) $enabledModules[$moduleName], $options); 
       } 
      } 
     } 

     return $applicationConfig; 
    } 

    public function init() 
    { 
     /** 
     * @var Zend_Application_Bootstrap_BoostrapAbstract 
     */ 

     $bootstrap = $this->getBootstrap(); 

     if(!$bootstrap->hasResource('frontController')) 
     { 
      $bootstrap->bootstrap('frontController'); 
     } 

     $front = $bootstrap->getResource('frontController'); 

     $applicationConfig = $this->_mergeModuleConfigs($bootstrap->getOptions()); 
     $bootstrap->setOptions($applicationConfig); 

     parent::init(); 


     return $this->_bootstraps; 

    } 

    /** 
    * Format a module name to the module class prefix 
    * 
    * @param string $name 
    * @return string 
    */ 
    protected function _formatModuleName($name) 
    { 

     $name = strtolower($name); 
     $name = str_replace(array('-', '.'), ' ', $name); 
     $name = ucwords($name); 
     $name = str_replace(' ', '', $name); 
     $options = $this->getOptions(); 

     if($this->prefixEnabled()) 
     { 
      $name = $this->getModuleNamePrefix().$name; 

     } 

     return $name; 
    } 

    protected function _getCacheManager() 
    { 
     $bootstrap = $this->getBootstrap(); 

     if(!$bootstrap->hasResource('cacheManager')) 
     { 
      $bootstrap->bootstrap('cacheManager'); 
     } 

     return $bootstrap->getResource('cacheManager'); 
    } 

    public function prefixEnabled() 
    { 
     return $this->_prefixModuleNames; 
    } 

    public function getModuleNamePrefix() 
    { 
     return $this->_moduleNamePrefix; 
    } 

    public function getConfigFilename() 
    { 
     return $this->_configFileName; 
    } 

    public function setEnabledModules($modules) 
    { 
     $this->_enabledModules = (array) $modules; 
    } 

    public function getEnabledModules($controllerDirectories = null) 
    { 
     if($controllerDirectories instanceof Zend_Controller_Front) 
     { 
      $controllerDirectories = $controllerDirectories->getControllerDirectory(); 
     } 

     if(is_array($controllerDirectories)) 
     { 
      $options = $this->getOptions(); 

      $enabledModules = isset($options['enabledModules']) 
       ? (array) $options['enabledModules'] 
       : array(); 

      $this->_enabledModules = array_intersect_key($controllerDirectories, $enabledModules); 

     } 
     elseif(null !== $controllerDirectories) 
     { 
      throw new InvalidArgumentException('Argument must be an instance of 
       Zend_Controller_Front or an array mathing the format of the 
       return value of Zend_Controller_Front::getControllerDirectory().' 
      ); 
     } 

     return $this->_enabledModules; 
    } 

    public function setPrefixModuleName($value) 
    { 
     $this->_prefixModuleNames = APP_Toolkit::literalize($value); 
    } 
} 

模塊引導基類

<?php 

class APP_Application_Module_Bootstrap extends Zend_Application_Module_Bootstrap 
{ 
    public function _initResourceLoader() 
    { 
     $loader = $this->getResourceLoader(); 
     $loader->addResourceType('actionhelper', 'helpers', 'Action_Helper'); 
    } 
} 

0123相關部分

Answer 1

也許這部分電子書「生存下去」可能會幫助你：6.6. Step 5: Fixing ZFExt_Bootstrap - 它專門講述你正在得到的錯誤。

（我不會把因爲有相當多的情侶長的段落，但是，希望這會幫助）