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module UsersHelper
def user_gravatar_image_tag(user, size = 64)
image_tag user_image(user), :alt => "", :class => "preview", :width => size, :height => size
end
# def user_default_avatar
# return "#{authenticated_root_url}#{image_path('icons/user.png')}" if Rails.application.config.relative_url_root.blank?
# relative_url_root = Rails.application.config.relative_url_root.gsub( /\//, '')
# "#{authenticated_root_url}#{image_path('icons/user.png')}".
# sub( Regexp.new("/#{relative_url_root}/#{relative_url_root}/"), "/#{relative_url_root}/").
# sub( Regexp.new("/#{relative_url_root}//#{relative_url_root}/"), "/#{relative_url_root}/")
# end
def gravatar_hash(user)
Digest::MD5.hexdigest( user.email)
end
def gravatar_url( user)
"http://www.gravatar.com/avatar/#{gravatar_hash(user)}?d=404"
end
def user_image(user)
begin
gravatar_resource = RestClient.get( gravatar_url( user)){|response, request, result| response }
rescue
# Happens if network is not available
return 'icons/user.png'
end
if gravatar_resource.code == 404
# Happens if user has not registered to gravatar
'icons/user.png'
else
gravatar_url( user)
end
end
end
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