Load JSON Values and pass them to a UITableView - Rubymotion

participants.json

[{"allergy":"Lactose Intolerant","created_at":"2012-11-16T23:59:10Z","date_of_birth":"2012-11-16","emergency_number":"0012345 6789","first_name":"John","group":"St. Peter","health_insurance_card":true,"id":1,"last_name":"Doe","swimmer":true,"updated_at":"2012-11-17T00:44:16Z","vaccination_certificate":false},{"allergy":"Xanax","created_at":"2012-11-17T09:50:27Z","date_of_birth":"2013-11-17","emergency_number":"0012345 6789","first_name":"John A","group":"St. Martin","health_insurance_card":true,"id":2,"last_name":"Doe","swimmer":true,"updated_at":"2012-11-17T09:50:27Z","vaccination_certificate":true},{"allergy":"None","created_at":"2012-11-17T09:51:28Z","date_of_birth":"2007-01-03","emergency_number":"0012345 6789","first_name":"John B","group":"Heiliger Franz von Asisi","health_insurance_card":false,"id":3,"last_name":"Doe","swimmer":true,"updated_at":"2012-11-17T09:51:28Z","vaccination_certificate":false}]

ParticipantsViewController

class ParticipantsTableViewController < UITableViewController
  def viewDidLoad
    super

    BW::HTTP.get("http://jugendgruppe-backend.192.168.2.105.xip.io/participants.json") do |response|
      json = BW::JSON.parse(response.body.to_str)
      @posts = json["items"]
      view.addSubview(@tableView)
    end

    Dispatch::Queue.concurrent('mc-data').async {
      participants_string = File.read("#{App.resources_path}/participants.json")
      @participants = BW::JSON.parse participants_string
      view.reloadData
      p @participants
    }

    # Uncomment the following line to preserve selection between presentations.

    # self.clearsSelectionOnViewWillAppear = false

    # Uncomment the following line to display an Edit button in the navigation
    # bar for this view controller.

    # self.navigationItem.rightBarButtonItem = self.editButtonItem
    self.navigationItem.title = "Teilnehmer"
  end

  def viewDidUnload
    super

    # Release any retained subviews of the main view.
    # e.g. self.myOutlet = nil
  end

  def shouldAutorotateToInterfaceOrientation(interfaceOrientation)
    interfaceOrientation == UIInterfaceOrientationPortrait
  end

## Table view data source

  def numberOfSectionsInTableView(tableView)
    # Return the number of sections.
    # @participants ? @participants.length : 0
    # @participants ? 1 : 0
    @participants ? @participants.length : 0
  end

  def tableView(tableView, titleForHeaderInSection:section)
    @participants[section]['group']
  end

  def tableView(tableView, numberOfRowsInSection:section)
    # Return the number of rows in the section.
    @participants.length
  end

  def tableView(tableView, cellForRowAtIndexPath:indexPath)
    cellIdentifier = self.class.name
    cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier) || begin
      cell = UITableViewCell.alloc.initWithStyle(UITableViewCellStyleDefault, reuseIdentifier:cellIdentifier)
      cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton
      cell
    end
    
    participant = @participants[indexPath.row]
    cell.textLabel.text = participant['first_name']
    cell
  end

## Table view delegate

  def tableView(tableView, didSelectRowAtIndexPath:indexPath)
    participants_detail_table_view_controller = Participants_detailTableViewController.alloc.init
    self.navigationController.pushViewController(participants_detail_table_view_controller, animated:true)

    participant = @participants[indexPath.row]
    participants_detail_table_view_controller.bind_with_participants(participant)
  end
end