How can I access firebase directory names as an array?

Question

I'm trying to access department and course information for an iOS app for students to buy/sell textbooks.

Right now I have two pickerViews. I'd like to select the department in one and have the relevant courses load into the second. What kind of call can I make to get an array of just the department names when structured as below?

So here I would want to access an array ["AHSS", "AIE", "ANTH"]. Then afterwards, I'd make another call depending on the selection. For AIE, I'd want the array ["330", "340"].

I'm unsure how I can just get the directory names as an array and not the values they eventually lead to?

Can you show the full structure, what is the parent node of this courses that you have listed ? — Nirav D, Aug 09 '18 at 06:25
@tim_d Try this https://stackoverflow.com/a/45447180/10150796 — Nikunj Kumbhani, Aug 09 '18 at 09:11

score 0 · Accepted Answer · answered Aug 09 '18 at 16:53

For anyone else that might have had this question. @Nikunj Kumbhani directed me in the right direction and I eventually got this which lists the key values.

myDatabase.child("departments").child("\(selectedDepartment ?? "AHSS")").observeSingleEvent(of: .value) { (snapshot) in

            if let myData = snapshot.value as? NSDictionary {

                for name in myData.keyEnumerator() {
                    stringList.append("\(name)")
                }

How can I access firebase directory names as an array?

1 Answers1