app/helpers/user_helper.rb

   1 module UserHelper
   2   # User images
   3
   4   def user_image(user, options = {})
   5     options[:class] ||= "user_image"
   6     options[:alt] ||= ""
   7
   8     if user.image_use_gravatar
   9       user_gravatar_tag(user, options)
  10     else
  11       image_tag user.image.url(:large), options
  12     end
  13   end
  14
  15   def user_thumbnail(user, options = {})
  16     options[:class] ||= "user_thumbnail"
  17     options[:alt] ||= ""
  18
  19     if user.image_use_gravatar
  20       user_gravatar_tag(user, options)
  21     else
  22       image_tag user.image.url(:small), options
  23     end
  24   end
  25
  26   def user_thumbnail_tiny(user, options = {})
  27     options[:class] ||= "user_thumbnail_tiny"
  28     options[:alt] ||= ""
  29
  30     if user.image_use_gravatar
  31       user_gravatar_tag(user, options)
  32     else
  33       image_tag user.image.url(:small), options
  34     end
  35   end
  36
  37   def user_image_url(user, options = {})
  38     if user.image_use_gravatar
  39       user_gravatar_url(user, options)
  40     else
  41       image_url(user.image.url)
  42     end
  43   end
  44
  45   # External authentication support
  46
  47   def openid_logo
  48     image_tag "openid_small.png", :alt => t("user.login.openid_logo_alt"), :class => "openid_logo"
  49   end
  50
  51   def auth_button(name, provider, options = {})
  52     link_to(
  53       image_tag("#{name}.png", :alt => t("user.login.auth_providers.#{name}.alt")),
  54       auth_path(options.merge(:provider => provider)),
  55       :class => "auth_button",
  56       :title => t("user.login.auth_providers.#{name}.title")
  57     )
  58   end
  59
  60   private
  61
  62   # Gravatar support
  63
  64   # See http://en.gravatar.com/site/implement/images/ for details.
  65   def user_gravatar_url(user, options = {})
  66     size = options[:size] || 100
  67     hash = Digest::MD5.hexdigest(user.email.downcase)
  68     default_image_url = image_url("users/images/large.png")
  69     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
  70   end
  71
  72   def user_gravatar_tag(user, options = {})
  73     url = user_gravatar_url(user, options)
  74     options.delete(:size)
  75     image_tag url, options
  76   end
  77 end