我有控制器
import UIKit
import MapKit
protocol UserLocationDelegate {
func userLocation(latitude :Double, longitude :Double)
}
class NearMeMapViewController: ARViewController, ARDataSource, MKMapViewDelegate, CLLocationManagerDelegate {
var nearMeIndexSelected = NearMeIndexTitle ()
var locationManager : CLLocationManager!
var nearMeARAnnotations = [ARAnnotation]()
var nearMeRequests = [NearMeRequest]()
var delegate : UserLocationDelegate!
var place: Place?
override func viewDidLoad() {
super.viewDidLoad()
self.title = nearMeIndexSelected.indexTitle
self.locationManager = CLLocationManager ()
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.distanceFilter = kCLHeadingFilterNone
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
self.dataSource = self
self.headingSmoothingFactor = 0.05
self.maxVisibleAnnotations = 30
getNearMeIndexSelectedLocation()
}
func getNearMeIndexSelectedLocation()
{
let nearMeRequest = MKLocalSearchRequest()
nearMeRequest.naturalLanguageQuery = nearMeIndexSelected.indexTitle
let nearMeregion = MKCoordinateRegionMakeWithDistance(self.locationManager.location!.coordinate, 250, 250)
nearMeRequest.region = nearMeregion
let nearMeSearch = MKLocalSearch(request: nearMeRequest)
nearMeSearch.start { (response : MKLocalSearchResponse?, error :Error?) in
for requestItem in (response?.mapItems)! {
let nearMeIndexRequest = NearMeRequest ()
nearMeIndexRequest.name = requestItem.name
nearMeIndexRequest.coordinate = requestItem.placemark.coordinate
nearMeIndexRequest.address = requestItem.placemark.addressDictionary?["FormattedAddressLines"] as! [String]
nearMeIndexRequest.street = requestItem.placemark.addressDictionary?["Street"] as! String!
nearMeIndexRequest.city = requestItem.placemark.addressDictionary?["City"] as! String
nearMeIndexRequest.state = requestItem.placemark.addressDictionary?["State"] as! String
nearMeIndexRequest.zip = requestItem.placemark.addressDictionary?["ZIP"] as! String
self.nearMeRequests.append(nearMeIndexRequest)
print(requestItem.placemark.name)
}
for nearMe in self.nearMeRequests {
let annotation = NearMeAnnotation(nearMeRequest: nearMe)
self.nearMeARAnnotations.append(annotation)
self.setAnnotations(self.nearMeARAnnotations)
}
}
}
func ar(_ arViewController: ARViewController, viewForAnnotation: ARAnnotation) -> ARAnnotationView {
let annotationView = NearMeARAnnotationView(annotation: viewForAnnotation)
// annotationView.delegate = self
annotationView.frame = CGRect(x: 0, y: 0, width: 150, height: 50)
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapBlurButton(_:)))
annotationView.addGestureRecognizer(tapGesture)
return annotationView
}
func tapBlurButton(_ sender: UITapGestureRecognizer) {
if let annotationView = sender.view as? NearMeARAnnotationView {
if let detailsVc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController")
as? DetailsViewController {
detailsVc.annotation = annotationView.annotation
if let annotation = annotationView.annotation as? Place {
detailsVc.place = annotation
}
self.navigationController?.pushViewController(detailsVc, animated: true)
}
}
}
}
然后在我看来，我尝试检查public function users() {
$users = User::all('id');
return view('view', compact('users'))
}
是否具有我需要的ID
$users但没有任何反应。如何检查集合是否具有我需要的ID？
答案 0 :(得分：3)
试试这个：
if ($users->contains('id', Auth::user()->id)){}
您需要指定要作为第一个参数的字段。