教义中的默认值

如何在Doctrine 2中设置默认值？

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#1楼

<?php
/**
 * @Entity
 */
class myEntity {
    /**
     * @var string
     *
     * @ORM\Column(name="myColumn", type="integer", options={"default" : 0})
     */
    private $myColumn;
    ...
}

请注意，这使用SQL DEFAULT ，某些字段（例如BLOB和TEXT ）不支持SQL DEFAULT 。

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#2楼

添加到@romanb辉煌的答案。

这会增长迁移的开销，由于您显然没法建立具备非null约束且没有默认值的字段。

// this up() migration is autogenerated, please modify it to your needs
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");

//lets add property without not null contraint        
$this->addSql("ALTER TABLE tablename ADD property BOOLEAN");

//get the default value for property       
$object = new Object();
$defaultValue = $menuItem->getProperty() ? "true":"false";

$this->addSql("UPDATE tablename SET property = {$defaultValue}");

//not you can add constraint
$this->addSql("ALTER TABLE tablename ALTER property SET NOT NULL");

有了这个答案，我建议您考虑一下为何首先须要数据库中的默认值？ 一般，它容许建立具备非null约束的对象。

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#3楼

使用：

options={"default":"foo bar"}

并非：

options={"default"="foo bar"}

例如：

/**
* @ORM\Column(name="foo", type="smallint", options={"default":0})
*/
private $foo

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#4楼

我也遇到一样的问题。 我想将数据库的默认值（自动）添加到实体中。 猜猜是什么，我作到了:)

<?php
/**
 * Created by JetBrains PhpStorm.
 * User: Steffen
 * Date: 27-6-13
 * Time: 15:36
 * To change this template use File | Settings | File Templates.
 */

require_once 'bootstrap.php';

$em->getConfiguration()->setMetadataDriverImpl(
    new \Doctrine\ORM\Mapping\Driver\DatabaseDriver(
        $em->getConnection()->getSchemaManager()
    )
);

$driver = new \Doctrine\ORM\Mapping\Driver\DatabaseDriver($em->getConnection()->getSchemaManager());
$driver->setNamespace('Models\\');

$em->getConfiguration()->setMetadataDriverImpl($driver);

$cmf = new \Doctrine\ORM\Tools\DisconnectedClassMetadataFactory();
$cmf->setEntityManager($em);
$metadata = $cmf->getAllMetadata();

// Little hack to have default values for your entities...
foreach ($metadata as $k => $t)
{
    foreach ($t->getFieldNames() as $fieldName)
    {
        $correctFieldName = \Doctrine\Common\Util\Inflector::tableize($fieldName);

        $columns = $tan = $em->getConnection()->getSchemaManager()->listTableColumns($t->getTableName());
        foreach ($columns as $column)
        {
            if ($column->getName() == $correctFieldName)
            {
                // We skip DateTime, because this needs to be a DateTime object.
                if ($column->getType() != 'DateTime')
                {
                    $metadata[$k]->fieldMappings[$fieldName]['default'] = $column->getDefault();
                }
                break;
            }
        }
    }
}

// GENERATE PHP ENTITIES!
$entityGenerator = new \Doctrine\ORM\Tools\EntityGenerator();
$entityGenerator->setGenerateAnnotations(true);
$entityGenerator->setGenerateStubMethods(true);
$entityGenerator->setRegenerateEntityIfExists(true);
$entityGenerator->setUpdateEntityIfExists(false);
$entityGenerator->generate($metadata, __DIR__);

echo "Entities created";

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#5楼

若是您为实体使用yaml定义，那么如下内容对我在postgresql数据库中有效：

Entity\Entity_name:
    type: entity
    table: table_name
    fields: 
        field_name:
            type: boolean
            nullable: false
            options:
                default: false