Google Maps Static map helper for Ruby on Rails

static_map_helper.rb

module StaticMapHelper

  def static_map_for(location, options = {})
    params = {
      center: [location.latitude, location.longitude].join(","),
      zoom: 15,
      size: "300x300",
      scale: 2,
      markers: [location.latitude, location.longitude].join(","),
      sensor: true,
      key: ENV['GOOGLE_STATIC_MAPS_API_KEY']
      }.merge(options)

    query_string =  params.map{|k,v| "#{k}=#{v}"}.join("&")
    image_tag "https://maps.googleapis.com/maps/api/staticmap?#{query_string}", :alt => location.city
  end

end