Laravel：在模型类中获取当前对象
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Laravel: Get current object inside model class
提问by iamjonesy
I'm wondering if it's possible to access the current object when accessing a method of that object. for example the method fullname()below is used to get the full name of the user.
我想知道在访问该对象的方法时是否可以访问当前对象。例如fullname()下面的方法用于获取用户的全名。
class User extends Eloquent
{
public function itineraries() {
return $this->has_many('Itinerary', 'user_id');
}
public function reviews() {
return $this->has_many('Placereview', 'user_id');
}
public function count_guides($user_id){
return Itinerary::where_user_id($user_id)->count();
}
public static function fullname() {
return $this->first_name . ' ' . $this->last_name; // using $this as an example
}
}
A user has a first_name field and a last_name field. Is there anyway I can do
用户有一个 first_name 字段和一个 last_name 字段。有没有我可以做的
$user = User::where('username', '=', $username)->first();
echo $user->fullname();
Without having to pass in the user object?
无需传入用户对象？
回答by Phill Sparks
You're almost there, you just need to remove the staticfrom your code. Static methods operate on a class, not an object; so $thisdoes not exist in static methods
你就快完成了，你只需static要从你的代码中删除。静态方法作用于一个类，而不是一个对象；所以$this在静态方法中不存在
public function fullname() {
return $this->first_name . ' ' . $this->last_name;
}
回答by Collin Henderson
In your user model, your static function can look something like this
在您的用户模型中，您的静态函数可能如下所示
public static function fullname($username) {
$user = self::where_username($username)->first();
return $user->first_name.' '.$user->last_name;
}
You can then call this anywhere in your views/controllers etc with User::fullname($someonesUsername)
然后，您可以在视图/控制器等中的任何位置调用它 User::fullname($someonesUsername)
