Setting up data source for Sections in UITableView Based off of Data from Backend

Question

I\'m learning how to utilize table views & table view cells and today I wanted to practice using sections within table views. Setting the section title and sorting the d

Answer 1

This a simple implementation of your problem. You have a player class which is your Firebase data.

class Player {
    var name: String
    var teamName: String

    init(name: String, teamName: String) {
        self.name = name
        self.teamName = teamName
    }
}

Create a Team class to store your section data.

class Team {
    var teamName: String
    var players: [Player]

    init(teamName: String, players: [Player]) {
        self.teamName = teamName
        self.players = players
    }
}

Store all the players in an array players after you get the data from Firebase. Now you can have a method which returns an array which contains Team objects which has teamName and players which is an array containing the filtered players of the sharing the same teamName

func getTeams() -> [Team] {
    var teams: [Team] = []
    while !players.isEmpty {
        guard let referencePlayer = players.first else {
            print("All players sorted.")
            return []
        }
        let filteredPlayers = players.filter { (player) -> Bool in
            return player.teamName == referencePlayer.teamName
        }
        players.removeAll { (player) -> Bool in
            return player.teamName == referencePlayer.teamName
        }
        let team = Team(teamName: referencePlayer.teamName, players: filteredPlayers)
        teams.append(team)
    }
    return teams
}

Now call this method in viewDidLoad and reload the table.

func numberOfSections(in tableView: UITableView) -> Int {
    return teams.count
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return teams[section].players.count
}