Pass the information from CKRecord to user defined class type

Question

I have to following class type

class Recipe {
 
  private let id: CKRecord.ID
  let name: String
  let coverPhoto: CKAsset?
  
  init?(record: CKRecord, database: CKDatabase) {
    guard
      let name = record["name"] as? String
    else { return nil }
    id = record.recordID
    
    self.name = name
    coverPhoto = record["coverPhoto"] as? CKAsset
  }

and in my viewcontroller, I want to display list of names that I fetched from cloudkit. So, i am trying to find a way to convert CKRecord to my class type Recipe.

I tried this but failed

let query = CKQuery(recordType: "GroceryItem", predicate: NSPredicate(value:true))
        database.perform(query, inZoneWith: nil) { [weak self] records, error in
            guard let records = records,error == nil else {
                return
            }
            DispatchQueue.main.async {
                self?.items = records.compactMap({ $0.value as? Recipe }) // gives error ambigous value
                self?.tableView.reloadData()
              
            }
        }

Records is the fetched variable from cloudkit as CKRecord

items is array of Recipe, [Recipe]

I want to transfer the data from records to items.

Answer 1

You cannot cast the type. You have to call init.

First remove the database parameter from the init method, it’s obviously not needed

init?(record: CKRecord) { …

Then replace

self?.items = records.compactMap({ $0.value as? Recipe })

with

self?.items = records.compactMap(Recipe.init)