How to post composite key data parameters with Alamofire? - ios

Question

I have data like this on server side.
For UserImagesTable, these are my parameters
{
"status" : false,
"id" : {
"userId" : 1,
"imageId" : 1
}
I need to post data through alamofire and retrofit.
I tried like this: I created one model class for userImages Table and one more model class for userImages.id table
My model classes are:
class UserImages
{
var status : Bool? = nil
var id : ImagesId? = nil
func toJson() -> [String:Any] {
return[
"status" : status as Any!,
"id" : id as ImagesId!
]
}
}
class ImagesId
{
var userId : Int16? = nil
var imageId : Int16? = nil
func toJson() -> [String:Any] {
return[
"userId" : userId as Any!,
"imageId" : imageId as Any!,
]
}
}
Then my Alamofire
let ImageParams = UserImages()
let ImageIdParams = ImagesId()
ImageIdParams.imageId = 2
ImageIdParams.userId = 3
ImageParams.status = true
favouriteVideoParams.id = ImageIdParams.toJson()-->this line coming some error like -->Cannot assign value of type '[String:any]' to type ImageId?
Alamofire.request(url, method: .post, parameters: ImageParams.toJson(), encoding: JSONEncoding.default, headers: Defines.Constants.Headers)
What I'm doing for post, is this approach correct or not? If it's possible give me some idea about retrofit post also.

Answer 1

For Alamofire, your .toJSON functions aren't really required a simpler solution would be that you create a parameter variable in your function that shapes the parameters with pre-defined keys and variable values given via the function, this would look something like this:
func postUserImageTable(with status: Bool?, and userImagesId: ImagesId?) {
let url = "your url"
let parameters = [
"status": status!
"id": [
"userId": userImagesId?.userId
"imageId": userImagesId?.imageId
]
]
Alamofire.request(url, method: .post, parameters: parameters)
}
as per the official documentation of Alamofire (Alamofire Post with JSON encoded Params)
For Retrofit you can make use of the #body tag to POST pojo classes to your server. So if you have equivalent java classes as you showed in Swift, being this:
public class UserImage {
private Boolean status;
private ImagesId imagesId;
//constructor
//getters and setters
}
public class ImagesId {
private int userId, imageId;
//constructor
//getters and setters
}
then you can add this call to your retrofit service
#Post("your/post/url")
Response postUserImageTable(#Body UserImage body);
And you can use this in your call with retrofit:
Call<Response> call = Service.postUserImageTable(new UserImage(false, new ImagesId(1,2));
call.enqueue(New Callback<Response> {
//obligatory overrides from retrofit
})