Ruby on Rails Using GoogleMaps with Rails Add the google maps javascript tag to the layout header

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Example

In order to have google maps work properly with turbolinks, add the javascript tag directly to the layout header rather than including it in a view.

# app/views/layouts/my_layout.html.haml
!!!
%html{:lang => 'en'}
  %head
    - # ...
    = google_maps_api_script_tag

The google_maps_api_script_tag is best defined in a helper.

# app/helpers/google_maps_helper.rb
module GoogleMapsHelper
  def google_maps_api_script_tag
    javascript_include_tag google_maps_api_source
  end

  def google_maps_api_source
    "https://maps.googleapis.com/maps/api/js?key=#{google_maps_api_key}"
  end

  def google_maps_api_key
    Rails.application.secrets.google_maps_api_key
  end
end

You can register your application with google and get your api key in the google api console. Google has a short guide how to request an api key for the google maps javascript api.

The api key is stored in the secrets.ymlfile:

# config/secrets.yml
development:
  google_maps_api_key: '...'
  # ...
production:
  google_maps_api_key: '...'
  # ...

Don't forget to add config/secrets.yml to your .gitignore file and makre sure you don't commit the api key to the repository.



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