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Maybe_V
Asked:2020-08-05 21:07:21 +0000 UTC2020-08-05 21:07:21 +0000 UTC

Magento 1.9 模型中的错误

  • 772

不知道是什么原因保存模型时出现错误：

致命错误：调用布尔值上的成员函数 beginTransaction()

该模型如下所示：

class Brain_CrownCaliber_Model_Processcrown extends Mage_Core_Model_Abstract
{
    protected function _construct()
    {
       $this->_init('brain_crowncaliber/crown_caliber_process');
    }

    public function addProductToCrown($idArray)
    {
        foreach ($idArray as $id) {
            $this->setData('product_id', $id);
        }
        Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);
        $this->save();
    }

}

我注册它config.xml：

<models>
            <brain_crowncaliber>
                <class>Brain_CrownCaliber_Model</class>
                <resourceModel>brain_crowncaliber_resource</resourceModel>
            </brain_crowncaliber>
</models>

可能是什么问题呢？我什至不知道我在这里做错了什么。

资源部分：

<brain_crowncaliber_resource>
                    <class>HexBrain_CrownCaliber_Model_Resource</class>
                    <entities>
                        <crown_caliber_process>
                            <table>crown_caliber_process</table>
                        </crown_caliber_process>
                    </entities>
</brain_crowncaliber_resource>

资源模型

class Brain_CrownCaliber_Model_Resource_Processcrown extends Mage_Core_Model_Resource_Db_Abstract
{

    protected function _construct()
    {
        $this->_init('brain_crowncaliber/crown_caliber_process', 'process_id');
    }
}
php

1 个回答

  1. Best Answer

    我会将其格式化为答案，因为评论不允许正常格式化

    这是文件app/code/core/Mage/Core/Model/Config.php第 1349 行中的方法

    /**
 * Get model class instance.
 *
 * Example:
 * $config->getModelInstance('catalog/product')
 *
 * Will instantiate Mage_Catalog_Model_Mysql4_Product
 *
 * @param string $modelClass
 * @param array|object $constructArguments
 * @return Mage_Core_Model_Abstract|false
 */
public function getModelInstance($modelClass='', $constructArguments=array())
{
    $className = $this->getModelClassName($modelClass);
    if (class_exists($className)) {
        Varien_Profiler::start('CORE::create_object_of::'.$className);
        $obj = new $className($constructArguments);
        Varien_Profiler::stop('CORE::create_object_of::'.$className);
        return $obj;
    } else {
        return false;
    }
}

    做点什么var_dump($className)，看看是什么类名形成的，很有可能是错的。我们进一步研究该方法getModelClassName()，通常我们会到达同一文件的方法 1219 。getGroupedClassName()

     /**
     * Retrieve class name by class group
     *
     * @param   string $groupType currently supported model, block, helper
     * @param   string $classId slash separated class identifier, ex. group/class
     * @param   string $groupRootNode optional config path for group config
     * @return  string
     */
    public function getGroupedClassName($groupType, $classId, $groupRootNode=null)
    {
        if (empty($groupRootNode)) {
            $groupRootNode = 'global/'.$groupType.'s';
        }

        $classArr = explode('/', trim($classId));
        $group = $classArr[0];
        $class = !empty($classArr[1]) ? $classArr[1] : null;

        if (isset($this->_classNameCache[$groupRootNode][$group][$class])) {
            return $this->_classNameCache[$groupRootNode][$group][$class];
        }

        $config = $this->_xml->global->{$groupType.'s'}->{$group};

        // First - check maybe the entity class was rewritten
        $className = null;
        if (isset($config->rewrite->$class)) {
            $className = (string)$config->rewrite->$class;
        } else {
            /**
             * Backwards compatibility for pre-MMDB extensions.
             * In MMDB release resource nodes <..._mysql4> were renamed to <..._resource>. So <deprecatedNode> is left
             * to keep name of previously used nodes, that still may be used by non-updated extensions.
             */
            if ($config->deprecatedNode) {
                $deprecatedNode = $config->deprecatedNode;
                $configOld = $this->_xml->global->{$groupType.'s'}->$deprecatedNode;
                if (isset($configOld->rewrite->$class)) {
                    $className = (string) $configOld->rewrite->$class;
                }
            }
        }

        // Second - if entity is not rewritten then use class prefix to form class name
        if (empty($className)) {
            if (!empty($config)) {
                $className = $config->getClassName();
            }
            if (empty($className)) {
                $className = 'mage_'.$group.'_'.$groupType;
            }
            if (!empty($class)) {
                $className .= '_'.$class;
            }
            $className = uc_words($className);
        }

        $this->_classNameCache[$groupRootNode][$group][$class] = $className;
        return $className;
    }

    此方法的作用是从配置中获取常规部分中指定的类前缀名称models，在您看到生成的类名称后，您就会明白错误在哪里。但根据经验，我会说配置中的某处有错字。原则上，CO 上的编辑版本应该可以工作。

    • 1

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