SOLVED: Using ForEach

@hausmark HWS+

Dec '23

I have created some structs to represent a student, an instruction (that a student would take) and an array of student.

I would like to use ForEach to list the instructions for each student but am struggling with a solution.

Any insights would be appreciated.

struct Student: Identifiable {
    var id = UUID()
    var name = ""
    var instructions = [Instruction]()
}

struct Instruction {
    var name = ""
}

struct Students  {
    var id = UUID()
    var people = [Student]()
}

struct ContentView: View {
    @State private var students = Students(id: UUID(), people: [Student(id: UUID(), name: "Joe", instructions: [Instruction(name: "English"), Instruction(name: "Math")]), Student(id: UUID(), name: "Sam", instructions: [Instruction(name: "Science"), Instruction(name: "Economics")])])

    var body: some View {
        List {
            // Would like to use ForEach here to list the instructions for each student here...
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }

}

@ygeras

Dec '23

I think you don't really need to use Students struct for this purpose.

struct Student: Identifiable {
    var id = UUID()
    var name = ""
    var instructions: [Instruction]
}

struct Instruction: Identifiable {
    var id = UUID()
    var name = ""
}

struct ContentView: View {
    @State private var students = [
        Student(name: "Student One", instructions: [Instruction(name: "English"), Instruction(name: "Math")]),
        Student(name: "Student Two", instructions: [Instruction(name: "Science"), Instruction(name: "Economics")])
    ]

    var body: some View {
        NavigationStack {
            List {
                ForEach(students) { student in
                    NavigationLink {
                        List(student.instructions) { instruction in
                            Text(instruction.name)
                        }
                    } label: {
                        Text(student.name)
                    }

                }
            }
        }
    }
}

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