我怎样才能在Laravel获得关系类型

Question

I have a problem like that i wanna write my own form builder at custom project with 70 models but i need to learn relationship type at eloquent and also 2 or 3 depht more.

For example:

class Category extends BaseModel
{
    public function details()
    {
        return $this->hasMany(CategoryDetail::class);
    }
}


class CategoryDetail extends BaseModel
{
    public function extras()
    {
        return $this->morphMany(Extra::class,'model');
    }
}

I need something like that:

learnMethodType(Category::class,'details');

Real need : data comes from builded json

 learnMethodType(Category::class,'details.extras'); 

return should be like:

['model'=> CategoryDetail::class,'type'=>'hasMany', ... other parameters];

['model'=> Extra::class,'type'=>'morphMany', 'name'=> 'model'];

Answer 1

What about this implementation?

function learnMethodType($classname,$method){
    $oReflectionClass = new ReflectionClass($classname);
    $method = $oReflectionClass->getMethod($method)
    $type = get_class($method->invoke($classname))
    return $type;
}

Or simply this:

function learnMethodType($classname,$method){
    $obj = new $classname;
    $type = get_class($obj->{$method}())
    return $type;
}

For your case you can also add

function get_short_class($obj){
    return (new \ReflectionClass($obj))->getShortName();
}

And replace get_class with get_short_class above.

Some benchmarks in case you are worried about the reflection class: