Problems with class initialization - ios

Question

I think it's a simple problem but a head scratcher.
I'm getting a ....has no initializers error when there actually are initializers.
Here is my code:
(Edit: I've updated the PatientData class to include all the additional variables. I didn't think they made a difference in figuring out the problem, so for the sake of brevity I left them out.)
Data Structures
class PatientData: Identifiable, ObservableObject
{
let id = UUID()
#Published var patientName: String = "Name"
#Published var patientAge: String = "Age"
#Published var patientDOB: String = "DOB"
#Published var patientPhone: String = "Phone"
#Published var patientAddress: PatientAddress
struct PatientAddress
{
var patientStreetAddress: String = "Street"
var patientCity: String = "City"
var patientState: String = "State"
var patientZip: String = "Zip"
init(patientStreetAddress: String, patientCity: String, patientState: String, patientZip: String)
{
self.patientStreetAddress = patientStreetAddress
self.patientCity = patientCity
self.patientState = patientState
self.patientZip = patientZip
}
}
#Published var facilityName: String = "Facility"
#Published var facilityRoom: String = "Room Number"
#Published var facilityFloor: String = "Floor"
#Published var facilityPhoneNumber: String = "Phone Number"
init(patientName: String, patientAge: String, patientDOB: String, patientPhone: String, patientAddress: PatientAddress, facilityName: String, facilityRoom: String, facilityFloor: String, facilityPhoneNumber: String)
{
self.patientName = patientName
self.patientAge = patientAge
self.patientDOB = patientDOB
self.patientPhone = patientPhone
self.patientAddress = patientAddress
self.facilityName = facilityName
self.facilityRoom = facilityRoom
self.facilityFloor = facilityFloor
self.facilityPhoneNumber = facilityPhoneNumber
}
init() {}
}
Content View
struct ContentView: View
{
#ObservedObject var patient = PatientData()
...
}

Answer 1

Note that:
PatientData()
is an equivalent of:
PatientData.init()
Which means that if you want to create your PatientData this way:
#ObservedObject var patient = PatientData()
you need to provide a matching init method (it can be empty as all your #Published properties have already a default value):
init() { }
EDIT
Looking at your full code, it seems like one of your properties has no initial value:
#Published var patientAddress: PatientAddress
An empty init will work only when all your properties are already initialised, which means you need to assign some value to your patientAddress:
#Published var patientAddress = PatientAddress()
However, for this to work, you'd need to add an empty init in PatientAddress as well:
struct PatientAddress {
...
init() {}
}
NOTE
All your code could be much simpler without all these initialisers. If you only use empty init methods you don't have to declare them (they are auto-generated for structs if there are no other initialisers):
class PatientData: Identifiable, ObservableObject {
let id = UUID()
#Published var patientName: String = "Name"
#Published var patientAge: String = "Age"
#Published var patientDOB: String = "DOB"
#Published var patientPhone: String = "Phone"
#Published var patientAddress: PatientAddress = PatientAddress()
#Published var facilityName: String = "Facility"
#Published var facilityRoom: String = "Room Number"
#Published var facilityFloor: String = "Floor"
#Published var facilityPhoneNumber: String = "Phone Number"
}
extension PatientData {
struct PatientAddress {
var patientStreetAddress: String = "Street"
var patientCity: String = "City"
var patientState: String = "State"
var patientZip: String = "Zip"
}
}
Also, Swift can infer types automatically. You don't usually have to declare types explicitly:
#Published var patientPhone = "Phone"
#Published var patientAddress = PatientAddress()