Can not GET JSON data with API created by Django

Question

I want to get the json data using the API created by Django and show it in the table view. There is nothing in value in the following program. What should I do?

Json data:

{
"books": [
{
  "id": 1, 
  "name": "Django", 
  "publisher": "GeekLab Nagano", 
  "page": 10, 
  "impressions": []
}]}

Code:

var tableTitle = [String]()
var tableDetail = [String]()

let url:String = "http://127.0.0.1:8000/api/v1/"

func loadData() {
    Alamofire.request(url).responseJSON {
        response in

        guard let value = response.result.value else {
            return
        }
        let json = JSON(value)
        let books = json["books"]

        for item in books.arrayValue {
            self.tableTitle.append(item["name"].stringValue)
            self.tableDetail.append(item["publisher"].stringValue)
        }

        print(self.tableTitle)
        print(self.tableDetail)


        self.tableView.reloadData()
    }
}