symfony4 如何创建具有实体关系的 DataFixtures

Question

在 Symfony4.2 下，我有一个 Translate 实体（id，gb_name，fr_name）和 LocationCountry entity (id, ISO3166-2 name: GB,FR, DE..., translate_id)

我定义了一个包含 255 个国家（"GB"、"Great Britain"、"Angleterre"…）的 CSV 文件，我想使用 DataFixture 将其推送到 Translate 和 LocationCountry 实体表中。

我仔细看了https://symfony.com/doc/current/bundles/DoctrineFixturesBundle/index.html#sharing-objects-between-fixtures
和
php create fixtures with automatic relations

src/DataFixtures/TranslateFixtures.php:

if ($csv_handle) {
        while ($item = fgetcsv($csv_handle, $csv_max_line_length, $csv_delimiter, $csv_enclosure)) {
            $obj = new Translate();
            $obj->setGbValue($item[1]);
            $obj->setFrValue($item[2]);
            $this->addReference('country'.$item[0], $obj);
            $manager->persist($obj);
        }
        fclose($csv_handle);
    }

    $manager->flush();

我不确定 addReference 应该在 flush() 之前 ?

src/DataFixtures/LocationCountryFixtures.php:

    if ($csv_handle) {
        while ($item = fgetcsv($csv_handle, $csv_max_line_length, $csv_delimiter, $csv_enclosure)) {
            $translate_country = $this->getReference('country'.$item[0]);
            $obj = new LocationCountry();
            $obj->setIso3166Name($item[0]);
            $obj->setTranslate($translate_country);
            $manager->persist($obj);
        }
        fclose($csv_handle);
    }

    $manager->flush();
}

public function getDependencies() {
    return array(
        Translate::class,
    );
}

如果我删除 addReference 翻译实体很好填充。

但是上面的代码，returns错误：

In SymfonyFixturesLoader.php line 76:                                                                                                                                             
The "App\Entity\Translate" fixture class is trying to be loaded, but is not available. Make sure this class is defined as a service and tagged with "doctrine.fixture.orm".

我认为有合适的用途：

use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;
use Doctrine\Common\DataFixtures\DependentFixtureInterface;
use App\Entity\LocationCountry;
use App\Entity\Translate;

感谢您的帮助

Answer 1

Doctrine 按字母顺序加载夹具文件；这就是你得到错误的原因。你可以考虑在你的灯具中使用函数 getOrder 来设置先加载哪个。

编辑：

您收到错误消息是因为您没有在 getDependencies 方法中提供正确的 class：

public function getDependencies() {
    return array(
        TranslateFixtures::class,
    );
}

Answer 2

在这种情况下，我只是删除 src/DataFixtures/TranslateFixtures。php

并更改 src/DataFixtures/LocationCountryFixtures.php 以完成所有工作：

if ($csv_handle) {
    while ($item = fgetcsv($csv_handle, $csv_max_line_length, $csv_delimiter, $csv_enclosure)) {
            //$translate_country = $this->getReference('country'.$item[0]);
            $country = new LocationCountry();
            $translate_country = new Translate();
            $translate_country->setGbValue($item[1]);
            $translate_country->setFrValue($item[2]);
            $country->setIso3166Name($item[0]);
            $country->setTranslateCountry($translate_country);
            $manager->persist($translate_country);
            $manager->persist($country);
        }
        fclose($csv_handle);
    }
    $manager->flush();

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