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     elsif user.avatar.attached?
  11       image_tag user.avatar.variant(:resize => "100x100>"), options
  12     else
  13       image_tag "avatar_large.png", options
  14     end
  15   end
  16
  17   def user_thumbnail(user, options = {})
  18     options[:class] ||= "user_thumbnail"
  19     options[:alt] ||= ""
  20
  21     if user.image_use_gravatar
  22       user_gravatar_tag(user, options)
  23     elsif user.avatar.attached?
  24       image_tag user.avatar.variant(:resize => "50x50>"), options
  25     else
  26       image_tag "avatar_small.png", options
  27     end
  28   end
  29
  30   def user_thumbnail_tiny(user, options = {})
  31     options[:class] ||= "user_thumbnail_tiny"
  32     options[:alt] ||= ""
  33
  34     if user.image_use_gravatar
  35       user_gravatar_tag(user, options)
  36     elsif user.avatar.attached?
  37       image_tag user.avatar.variant(:resize => "50x50>"), options
  38     else
  39       image_tag "avatar_small.png", options
  40     end
  41   end
  42
  43   def user_image_url(user, options = {})
  44     if user.image_use_gravatar
  45       user_gravatar_url(user, options)
  46     elsif user.avatar.attached?
  47       polymorphic_url(user.avatar.variant(:resize => "100x100>"))
  48     else
  49       image_url("avatar_large.png")
  50     end
  51   end
  52
  53   # External authentication support
  54
  55   def openid_logo
  56     image_tag "openid_small.png", :alt => t("users.login.openid_logo_alt"), :class => "openid_logo"
  57   end
  58
  59   def auth_button(name, provider, options = {})
  60     link_to(
  61       image_tag("#{name}.png", :alt => t("users.login.auth_providers.#{name}.alt")),
  62       auth_path(options.merge(:provider => provider)),
  63       :class => "auth_button",
  64       :title => t("users.login.auth_providers.#{name}.title")
  65     )
  66   end
  67
  68   private
  69
  70   # Gravatar support
  71
  72   # See http://en.gravatar.com/site/implement/images/ for details.
  73   def user_gravatar_url(user, options = {})
  74     size = options[:size] || 100
  75     hash = Digest::MD5.hexdigest(user.email.downcase)
  76     default_image_url = image_url("avatar_large.png")
  77     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
  78   end
  79
  80   def user_gravatar_tag(user, options = {})
  81     url = user_gravatar_url(user, options)
  82     options.delete(:size)
  83     image_tag url, options
  84   end
  85 end