Laravel 非静态方法问题
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Laravel Non-static method issue
提问by Alex
Having the following Models:
有以下型号：
news.php
新闻.php
class News extends Aware {
public static $table = 'noticia';
public static $key = 'idnoticia';
public static $timestamps = false;
public static $rules = array(
'titulo' => 'required',
'subtitulo' => 'required',
);
public function images()
{
return $this->has_many('Image');
}
}
image.php
图片.php
class Image extends Aware {
public static $timestamps = true;
public static $rules = array(
'unique_name' => 'required',
'original_name' => 'required',
'location' => 'required',
'news_id' => 'required',
);
public function news()
{
return $this->belongs_to('News');
}
}
Then in a controller I do the following:
然后在控制器中我执行以下操作：
$image = new Image(array(
'unique_name' => $fileName,
'original_name' => $file['file']['name'],
'location' => $directory.$fileName,
'news_id' => $news_id,
));
News::images()->insert($image);
I keep getting the following error message:
我不断收到以下错误消息：
Non-static method News::images() should not be called statically, assuming $this from incompatible context
非静态方法 News::images() 不应静态调用，假设 $this 来自不兼容的上下文
Any ideas what am I doing wrong?
任何想法我做错了什么？
Setting public static function images()doesn't seem to be wanted, as after a refresh I get an error saying
public static function images()似乎不需要设置，因为刷新后我收到一条错误消息
$this when not in object context
$this 不在对象上下文中时
Gordon said that by doing News::images()->insert($image);I'm doing a static call, but that's how saw to do it
戈登说，通过这样做，News::images()->insert($image);我正在做一个静态调用，但这就是看到的方法
回答by Halcyon
You're using $thisin a function that is called statically. That's not possible.
您正在$this一个名为statically的函数中使用。那是不可能的。
$thisbecomes available only after you create an instance with new.
$this仅在您使用new.
If you turn on strict mode you will get another error, namely that imagesis not a static function and thus shouldn't be called statically.
如果您打开严格模式，您将收到另一个错误，即它images不是静态函数，因此不应静态调用。
The problem is in News::images(), not in images()->insert($image);
问题出在News::images()，不在images()->insert($image);
回答by Nicholas Ruunu
回答by Martin Samson
$this can only be used within an object instance. Class::method() calls a static method of the specified class.
$this 只能在对象实例中使用。Class::method() 调用指定类的静态方法。
In your case, you mixed both.
在你的情况下，你混合了两者。
Your function definition for images is for an object instance:
您的图像函数定义适用于对象实例：
public function images()
{
return $this->has_many('Image');
}
You are calling it as a static method:
您将其称为静态方法：
News::images()->insert($image);
The Newsclass would need to be instantiated or the images method be modified to support static calls.
该News班将需要实例化或图像的方法进行修改，以支持静态调用。
