request.swift

let params = ["location": locationStr,"rtype": escapedRestaurantValue]
        Alamofire.request(.GET, API_BASE_URL, parameters: params)
            .responseJSON { response in
                if let restaurants = response.result.value {
                    print("JSON: \(restaurants)")
                    if let error = restaurants["error"] {
                        print("No venue found | error :\(error)")
                        self.restaurantName.text = "Nothing found! Try again"
                        self.stopSpinner(nil)
                        return
                    }
                    let venueCount = restaurants.count
                    print(" count : \(restaurants.count)")
                    if (venueCount == 0) {
                        print("No venue found")
                        self.restaurantName.text = "Nothing found! Try again"
                        self.stopSpinner(nil)
                        return
                    }
                    let venueLimit = min(venueCount, 50)
                    let randomRestaurantIndex = Int(arc4random_uniform(UInt32(venueLimit)))
                    print(randomRestaurantIndex)
                    guard let results = restaurants as? NSArray
                        else {
                            print ("cannot find key location in \(restaurants)")
                            return
                    }
                    for r in results{
                        let photoURL = NSURL(string:r["photo_url"] as! String)
                        if let imageData = NSData(contentsOfURL: photoURL!) {
                                let image  = UIImage(data: imageData)
                       
                            let name = r["name"] as! String
                            let address = r["address"] as! String
                            let lat = r["latitude"] as! String
                            let lng = r["longitude"] as! String
                            let venue_id = r["venue_id"] as! String
                            let checkins = r["checkins"] as! UInt
                            let restaurant = Restaurant(name: name, photo: image, address: address, checkins: checkins, latitude: lat, longitude: lng, venue_id: venue_id)!
                            self.restaurants.append(restaurant)
                            
                            print("\(name) \(checkins) \(lat) \(venue_id)")
                        }
                        
                    }
                    let randomRestaurant = self.restaurants[randomRestaurantIndex]
                    self.setRandomRestaurant(randomRestaurant)
                   
                    self.saveRestaurants()
                    self.stopSpinner(nil)
                }
        }