Laravel - 如何使 Laravel 关系中的属性可见？
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Laravel - how to makeVisible an attribute in a Laravel relation?
提问by Gruz
I use in my model code to get a relation
我在我的模型代码中使用以获得关系
class User extends Authenticatable
{
// ...
public function extensions()
{
return $this->belongsToMany(Extension::class, 'v_extension_users', 'user_uuid', 'extension_uuid');
}
// ...
}
The Extensionhas field passwordhidden.
该扩展名具有现场密码隐藏。
class Extension extends Model
{
// ...
protected $hidden = [
'password',
];
// ...
}
Under some circumstances I want to makeVisiblethe password field.
在某些情况下，我想让密码字段可见。
How can I achieve this?
我怎样才能做到这一点？
采纳答案by Gruz
Well, I got the idea from https://stackoverflow.com/a/38297876/518704
好吧，我从https://stackoverflow.com/a/38297876/518704得到了这个想法
Since my relation model Extension::classis called by name in my code return $this->belongsToMany(Extension::class,...I cannot even pass parameter to it's constructor.
由于我的关系模型Extension::class在我的代码中按名称调用，因此我return $this->belongsToMany(Extension::class,...什至无法将参数传递给它的构造函数。
So to pass something to the constructor I may use static class variables.
因此，要将某些内容传递给构造函数，我可能会使用静态类变量。
So in my Extensionmodel I add static variables and run makeVisible method.
Later I destruct the variables to be sure next calls and instances use default model settings.
所以在我的Extension模型中，我添加了静态变量并运行 makeVisible 方法。后来我破坏了变量以确保下一次调用和实例使用默认模型设置。
I moved this to a trait, but here I show at my model example.
我把它移到了一个特征，但在这里我展示了我的模型示例。
class Extension extends Model
{
public static $staticMakeVisible;
public function __construct($attributes = array())
{
parent::__construct($attributes);
if (isset(self::$staticMakeVisible)){
$this->makeVisible(self::$staticMakeVisible);
}
}
.....
public function __destruct()
{
self::$staticMakeVisible = null;
}
}
And in my relation I use something like this
在我的关系中我使用这样的东西
class User extends Authenticatable
{
...
public function extensions()
{
$class = Extension::class;
$class::$staticMakeVisible = ['password'];
return $this->belongsToMany(Extension::class, 'v_extension_users', 'user_uuid', 'extension_uuid');
}
...
}
回答by DevK
->makeVisible([...])should work:
->makeVisible([...])应该管用：
$model = \Model::first();
$model->makeVisible(['password']);
$models = \Model::get();
$models = $models->each(function ($i, $k) {
$i->makeVisible(['password']);
});
// belongs to many / has many
$related = $parent->relation->each(function ($i, $k) {
$i->makeVisible(['password']);
});
// belongs to many / has many - with loading
$related = $parent->relation()->get()->each(function ($i, $k) {
$i->makeVisible(['password']);
});
回答by Thom Seddon
The highest voted answer didn't seem to work for me (the relationsattribute seems to be a protected arraynow so can't be used as a collection in @DevK's answer), I instead used:
投票最高的答案似乎对我不起作用（该relations属性现在似乎是受保护的数组，因此不能在@DevK 的答案中用作集合），我改为使用：
$parent->setRelation('child', $parent->child->first()->setVisible(['id']));
