app/helpers/user_helper.rb

   1 module UserHelper
   2   # User images
   3
   4   def user_image(user, options = {})
   5     options[:class] ||= "user_image border border-secondary-subtle bg-body"
   6     options[:alt] ||= ""
   7
   8     if user.image_use_gravatar
   9       user_gravatar_tag(user, options)
  10     elsif user.avatar.attached?
  11       user_avatar_variant_tag(user, { :resize_to_limit => [100, 100] }, options)
  12     else
  13       image_tag "avatar.svg", options.merge(:width => 100, :height => 100)
  14     end
  15   end
  16
  17   def user_thumbnail(user, options = {})
  18     options[:class] ||= "user_thumbnail border border-secondary-subtle bg-body"
  19     options[:alt] ||= ""
  20
  21     if user.image_use_gravatar
  22       user_gravatar_tag(user, options.merge(:size => 50))
  23     elsif user.avatar.attached?
  24       user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
  25     else
  26       image_tag "avatar.svg", options.merge(:width => 50, :height => 50)
  27     end
  28   end
  29
  30   def user_thumbnail_tiny(user, options = {})
  31     options[:class] ||= "user_thumbnail_tiny border border-secondary-subtle bg-body"
  32     options[:alt] ||= ""
  33
  34     if user.image_use_gravatar
  35       user_gravatar_tag(user, options.merge(:size => 50))
  36     elsif user.avatar.attached?
  37       user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
  38     else
  39       image_tag "avatar.svg", options.merge(:width => 50, :height => 50)
  40     end
  41   end
  42
  43   def user_image_url(user)
  44     if user.image_use_gravatar
  45       user_gravatar_url(user)
  46     elsif user.avatar.attached?
  47       polymorphic_url(user_avatar_variant(user, :resize_to_limit => [100, 100]), :host => Settings.server_url)
  48     else
  49       image_url("avatar.svg")
  50     end
  51   end
  52
  53   private
  54
  55   # Local avatar support
  56   def user_avatar_variant_tag(user, variant_options, options)
  57     if user.avatar.variable?
  58       variant = user.avatar.variant(variant_options)
  59       # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
  60       if variant.send(:processed?)
  61         metadata = variant.processed.send(:record).image.blob.metadata
  62         if metadata["width"]
  63           options[:width] = metadata["width"]
  64           options[:height] = metadata["height"]
  65         end
  66       end
  67       image_tag variant, options
  68     else
  69       image_tag user.avatar, options
  70     end
  71   end
  72
  73   def user_avatar_variant(user, options)
  74     if user.avatar.variable?
  75       user.avatar.variant(options)
  76     else
  77       user.avatar
  78     end
  79   end
  80
  81   # Gravatar support
  82
  83   # See http://en.gravatar.com/site/implement/images/ for details.
  84   def user_gravatar_url(user, options = {})
  85     size = options[:size] || 100
  86     hash = Digest::MD5.hexdigest(user.email.downcase)
  87     default_image_url = image_url("avatar_large.png")
  88     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
  89   end
  90
  91   def user_gravatar_tag(user, options = {})
  92     url = user_gravatar_url(user, options)
  93     options[:height] = options[:width] = options.delete(:size) || 100
  94     image_tag url, options
  95   end
  96 end