Whereami sample code for my blog post.

bnr_map_point.rb

class BNRMapPoint
  attr_reader :coordinate, :title
  def initialize(coordinate, title)
    @coordinate, @title = coordinate, title
  end
end

bnr_map_point_fixed.rb

class BNRMapPoint
  def initialize(coordinate, title)
    @coordinate, @title = coordinate, title
  end

  def coordinate; @coordinate; end
  def title; @title; end
end

found_location.rb

def found_location(loc)
  coord = loc.coordinate
  point = BNRMapPoint.new(coord, locationTitleField.text)
  worldView.addAnnotation(point)
  # ... some cleanup code here
end

where_ami_controller_wrong.rb

class WhereamiController < UIViewController
  extend IB
  attr_reader :location_manager

  ## ib outlets
  outlet :worldView, MKMapView
  outlet :activityIndicator, UIActivityIndicatorView
  outlet :locationTitleField, UITextField

  def viewDidLoad
    @location_manager = CLLocationManager.alloc.init
    location_manager.setDelegate(self)
    location_manager.setDesiredAccuracy(KCLLocationAccuracyBest)
  end

  #MKMapViewDelegate
  def mapView( map, didUpdateUserLocation: location)
    @last_location = location
    coord = location.coordinate
    region = MKCoordinateRegionMakeWithDistance(coord, 250, 250)
    worldView.setRegion(region, animated:true)
  end

  #UITextFieldDelegate
  def textFieldShouldReturn(field)
    field.resignFirstResponder
    find_location
    true
  end

  def locationManager(man, didUpdateToLocation:to, fromLocation: from)
    found_location(to)
  end

private
  def find_location
    location_manager.startUpdatingLocation
    activityIndicator.startAnimating
    locationTitleField.setHidden(true)
  end

  def found_location(loc)
    coord = loc.coordinate
    point = BNRMapPoint.new(coord, locationTitleField.text)
    worldView.addAnnotation(point)
    location_manager.stopUpdatingLocation
    activityIndicator.stopAnimating
    locationTitleField.setText("")
    locationTitleField.setHidden(false)
  end
end