Split Array separated by...

Alberto Giambone 👨‍🌾 — Mon, 22 Aug 2022 20:44:40 +0000

Hi,
my way to split one array (of String) in two or more var

sometimes you have a Date() in a String format, and you want only the year.

you can use .components(separatedBy: "/")

func splitArray() {

    let myARRAY = "20/09/2021"
    let SplittedArray = myARRAY.components(separatedBy: "/")

    let DAY = SplittedArray[0]
    let MONTH = SplittedArray[1]
    let YEAR = SplittedArray[2]

        print("\(DAY), \(MONTH), \(YEAR)")
    }

Firestore Swift CRUD

Alberto Giambone 👨‍🌾 — Mon, 22 Aug 2022 20:34:00 +0000

My way to Firestore CRUD for iOS UIKit🥳,

1. Create a Rule for your data on the Firestore Rule page

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {

    match /Adress/{userId} {
      allow read, write: if request.auth != null;
      allow create: if request.auth != null;
        }
    }
}

2. Create a Model for your data

I usually use Struct

create a swift file -> and write down you struct

Struct myStruct {

    var name: String
    var city: String
    var state: String
    var UID: String
    var DID: String

    var dict: [String: Any] {
        return[ 
        "name": name,
        "city": city,
        "state": state,
        "UID": UID,
        "DID": DID
       ]
   }
}

3. Create a UserDefaults Object

After user Login save the user ID on UserDefaults as String, then reuse this element in ViewDidLoad() or ViewWillAppear() resuming this value.

4. Create a your first Data

Save to Firestore with:

let db = Firestore.firestore()

then...

 db.collection("Adress").addDocument(data: [

            "name": String(name_label.text ?? ""),
            "city": String(city_label.text ?? ""),
            "state": String(state_label.text ?? ""),
            "UID": String(ID ?? ""),
            "DID": String("")
        ]) { err in
            if let err = err {
                print("Error adding document: \(err)")
            } else {
                //print("Document added with ID: \(ref.documentID)")
                }
            }

5. Read Data

Remember to use the user Identifier you already saved in UserDefault, I usually do this in ViewWillAppear() beacuse of hierarchies...

ID = UserDefaults.standard.object(forKey: "userInfo") as? String

create an array of your struct for your data.

var arrayOfData = [myStruct]()

Then you start read from Firestore:

 let db = Firestore.firestore()

        db.collection("Adress").whereField("UID", isEqualTo: ID!).getDocuments() { [self](querySnapshot, err) in

            if let err = err {
                print("Error getting Firestore data: \(err)")
            }else{
                for document in querySnapshot!.documents {

                let singleData = myStruct(name: document.data()["name"] as? String ?? "", city: document.data()["city"] as? String ?? "", state: document.data()["state"] as? String ?? "",
UID: document.data()["UID"] as? String ?? "",
DID: document.documentID)

self.arrayOfData.append(singleData)
            }
        }
    }

5. Update Data

Updating data by documentID and of course user ID 😂

when have you found the right document to update, set the new value for the document.

let DOCREFERENCE = db.collection("Adress").document(documentID!)

            DOCREFERENCE.setData([
                "name": String(name_label.text ?? ""),
            "city": String(city_label.text ?? ""),
            "state": String(state_label.text ?? ""),
            "UID": String(ID ?? ""),
            "DID": String(documentID)
            ])

6. Delete Data

Delete data in a collection (usually UITableView() or UICollectionView())

let db = Firestore.firestore()

db.collection("Adress").document(documentID).delete()

Replace String part on Swift

Alberto Giambone 👨‍🌾 — Wed, 27 Jul 2022 14:36:40 +0000

HI all,
some years ago i needed to substitute "," with "." in a String.

I used this func :
extension String { mutating func replace(_ originalString:String, with newString:String) { self = self.replacingOccurrences(of: originalString, with: newString) } }

but today I discovered Swift has a Method replacingOccurrences in a String 🥳🥳

DEV Community: Alberto Giambone 👨‍🌾

Split Array separated by...

Firestore Swift CRUD

Replace String part on Swift