app/helpers/users_helper.rb


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module UsersHelper

  def user_gravatar_image_tag(user)
    gravatar_image_tag user.email, :alt => user.name, :class => "preview", :gravatar => { :default => user_default_avatar, :size => 64 }
  end

  def user_default_avatar
    image_path('icons/user.png')
  end

end