# -*- encoding : utf-8 -*- module UsersHelper def avatar_url_by_email(email, size = :small) avatar_url(User.where(:email => email).first || User.new(:email => email), size) end def avatar_url(subject, size = :small) if subject.try('avatar?') subject.avatar.url(size) elsif subject.kind_of? Group image_path('ava-big.png') else gravatar_url(subject.email, subject.avatar.styles[size].geometry.split('x').first) end end def gravatar_url(email, size = 30) "https://secure.gravatar.com/avatar/#{Digest::MD5.hexdigest(email.downcase)}?s=#{size}&r=pg" end end