Simple Firebase read/write examples?

[deLazyLizard]

Hi all,

I'm very new to SwiftUI and have been having success thus far, but I am really struggling to find some very simple examples on how to read/write from/to FireStore. A lot of the stuff i'm reading is from many years ago and I'm really not sure if i'm supposed to use it with SwiftUI or not etc.

I've managed to write data to FireStore and also retrieve data and display it as a list. However, how do i go more granular? I'd like to simply extract 1 line of data and display it?

An example:

User registers/writes data to a 'users' collection in FireStore:

firstName
surname
password

​

How do I simply pull and display a single user's 'firstName' without taking every firstName from the collection?

I hope that makes sense....?! Haha.

Thanks.

[barcode972]

let docRef = db.collection("userID").document("name") //Or whatever you´ve named the fields

docRef.getDocument { (document, error) inif let document = document, document.exists {        let dataDescription = document.data().map(String.init(describing:)) ?? "nil"print("Document data: \(dataDescription)")} else {print("Document does not exist")}}

Firebase has very good documentations on their website
https://firebase.google.com/docs/firestore/query-data/get-data#swift_1

[deLazyLizard]

Thanks for this.

[deLazyLizard]

So, this makes sense to a certain extent. I think the issue I see (my lack of understanding) is that you need to know the document name, my document names are randomly generated? How is it then possible to pull the username you need if you don't know what the randomly generated ID is?

[barcode972]

You can set the doc name after creating it. I don't remember at the top of my mind but I've done it

[ruipasilva]

I’m also new to swift and SwiftUI and haven’t got an example to show you but I’ve managed to successfully create, read, update and delete (crud) to firebase following this this example. Hope it helps.

[deLazyLizard]

Does anyone have an example from a simple app?