app/helpers/user_helper.rb

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