为瞬态记录添加多对多关系的学说

发布于 2024-09-09 01:31:29 字数 322 浏览 9 评论 0原文

两个模型 Site 和 Language 共享多对多关系（它们是双向的）如何添加它们之间的关系？

理想情况下，我想这样做：（将现有语言添加到新站点）

$site = new Site();
$site->name = "Google"
$site->url = "www.google.com";

----添加语言的代码----

$site->save();

或者我应该只在调用 save() 之后添加语言，如果是这样，该怎么做？

提前致谢

原文

two models Site and Language share a many-to-many relationship (they are bi-directional)
How do I add a relationship between them?

Ideally I want to do this : (add an existing language to a new Site)

$site = new Site();
$site->name = "Google"
$site->url = "www.google.com";

---- code to add language----

$site->save();

Or should I only add the language after calling save() and if so how is that done?

Thanks in advance

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罪歌 2024-09-16 01:31:29

我真的无法提供比这更好的解释：

http://www.doctrine-project.org/projects/orm/1.2/docs/manual/working-with-models/en#many-to-many-relations

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冷︶言冷语的世界 2024-09-16 01:31:29

发现问题：关联表的主键未设置为“自动增量”

此代码有效

$site = new Site();
$site->name = "Google";
$site->url = "www.google.com";
// now add languages
$langIds = array(1, 2,3);
foreach ($langIds as $id) {
    $site->SiteLanguage[]->languageId = $id;
}

// now call save --- this creates a new site along with associations
$site->save();

Found the problem : The primary key of the association table is not set to "Auto-Increment"

this code works

$site = new Site();
$site->name = "Google";
$site->url = "www.google.com";
// now add languages
$langIds = array(1, 2,3);
foreach ($langIds as $id) {
    $site->SiteLanguage[]->languageId = $id;
}

// now call save --- this creates a new site along with associations
$site->save();

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