laravel 5.1它调用成员函数where（）on string

i am used laravel 5.1

i try to solved

model

 public function scopeLoacatedAt($zip, $street, $query)
    {
        return $query->where(compact('zip','street'));
          $street = str_replace('-',' ', $street);   
    }

controller function

 public function show($zip, $street)
    {    
        $flyer =  Flyer::loacatedAt($zip, $street)->first();    
        return view('flyers.show', compact('flyer'));
    }   

Error message when i run in browser i deleted compact and use another elquent collection i have same msg Call to a member function where() on string

$query need to be the first parameter.

It should be:

public function scopeLoacatedAt($query, $zip, $street)
{
    $street = str_replace('-',' ', $street);   
    return $query->where(compact('zip','street'));
}