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     elsif user.image.file?
  13       image_tag user.image.url(:large), options
  14     else
  15       image_tag "avatar_large.png", options
  16     end
  17   end
  18
  19   def user_thumbnail(user, options = {})
  20     options[:class] ||= "user_thumbnail"
  21     options[:alt] ||= ""
  22
  23     if user.image_use_gravatar
  24       user_gravatar_tag(user, options)
  25     elsif user.avatar.attached?
  26       image_tag user.avatar.variant(:resize => "50x50>"), options
  27     elsif user.image.file?
  28       image_tag user.image.url(:small), options
  29     else
  30       image_tag "avatar_small.png", options
  31     end
  32   end
  33
  34   def user_thumbnail_tiny(user, options = {})
  35     options[:class] ||= "user_thumbnail_tiny"
  36     options[:alt] ||= ""
  37
  38     if user.image_use_gravatar
  39       user_gravatar_tag(user, options)
  40     elsif user.avatar.attached?
  41       image_tag user.avatar.variant(:resize => "50x50>"), options
  42     elsif user.image.file?
  43       image_tag user.image.url(:small), options
  44     else
  45       image_tag "avatar_small.png", options
  46     end
  47   end
  48
  49   def user_image_url(user, options = {})
  50     if user.image_use_gravatar
  51       user_gravatar_url(user, options)
  52     elsif user.avatar.attached?
  53       url_for(user.avatar.variant(:resize => "100x100>"))
  54     elsif user.image.file?
  55       image_url(user.image.url(:large))
  56     else
  57       image_url("avatar_large.png")
  58     end
  59   end
  60
  61   # External authentication support
  62
  63   def openid_logo
  64     image_tag "openid_small.png", :alt => t("users.login.openid_logo_alt"), :class => "openid_logo"
  65   end
  66
  67   def auth_button(name, provider, options = {})
  68     link_to(
  69       image_tag("#{name}.png", :alt => t("users.login.auth_providers.#{name}.alt")),
  70       auth_path(options.merge(:provider => provider)),
  71       :class => "auth_button",
  72       :title => t("users.login.auth_providers.#{name}.title")
  73     )
  74   end
  75
  76   private
  77
  78   # Gravatar support
  79
  80   # See http://en.gravatar.com/site/implement/images/ for details.
  81   def user_gravatar_url(user, options = {})
  82     size = options[:size] || 100
  83     hash = Digest::MD5.hexdigest(user.email.downcase)
  84     default_image_url = image_url("avatar_large.png")
  85     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
  86   end
  87
  88   def user_gravatar_tag(user, options = {})
  89     url = user_gravatar_url(user, options)
  90     options.delete(:size)
  91     image_tag url, options
  92   end
  93 end