Helpers for embedding or displaying links to a Google map

helper.rb

module GoogleMapsHelper

  # Returns a URL to use in an iframe for embedding a Google map
  # Reference: http://asnsblues.blogspot.com/2011/11/google-maps-query-string-parameters.html
  def google_maps_embed_url(address)
    "#{google_maps_url(address)}&output=embed"
  end

  # Returns a URL to use for linking to a Google map
  # Reference: http://asnsblues.blogspot.com/2011/11/google-maps-query-string-parameters.html
  def google_maps_url(address)
    "https://maps.google.com/maps?f=q&t=m&ie=UTF8&q=#{u address}"
  end

end

sample_usage.html.erb

<%= content_tag :iframe, nil,
                src: google_maps_embed_url(@address),
                width: 300,
                height: 300,
                frameborder: 0,
                scrolling: 'no',
                marginheight: 0,
                marginwidth: 0 %>

<br />

<small>
  <%= link_to "View Larger Map", google_maps_url(@address) %>
</small>