belongsTo('App\User'); } // Eloquent relationship with the category model, a book belongs to a category public function category() { return $this->belongsTo('App\Category'); } // Scope query used to filter results that are greater than a given price public function scopePriceGreaterThan($query, $price) { return $query->where('price', '>', $price); } // Scope query used to filter results that are less than a given price public function scopePriceLessThan($query, $price) {