app/helpers/user_helper.rb

   1 module UserHelper
   2   include InlineSvg::ActionView::Helpers
   3
   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   # External authentication support
  56
  57   def auth_button(provider, preferred: false)
  58     body = inline_svg_tag("auth_providers/#{provider}.svg",
  59                           :class => "rounded-1 text-body-emphasis",
  60                           :size => "36")
  61     body += t("application.auth_providers.#{provider}.title") if preferred
  62     link_to(
  63       body,
  64       auth_path(:provider => provider),
  65       :method => :post,
  66       :class => ["auth_button btn btn-outline-secondary border p-2", { "px-4 d-flex gap-3 justify-content-center align-items-center" => preferred }],
  67       :title => t("application.auth_providers.#{provider}.title")
  68     )
  69   end
  70
  71   private
  72
  73   # Local avatar support
  74   def user_avatar_variant_tag(user, variant_options, options)
  75     if user.avatar.variable?
  76       variant = user.avatar.variant(variant_options)
  77       # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
  78       if variant.send(:processed?)
  79         metadata = variant.processed.send(:record).image.blob.metadata
  80         if metadata["width"]
  81           options[:width] = metadata["width"]
  82           options[:height] = metadata["height"]
  83         end
  84       end
  85       image_tag variant, options
  86     else
  87       image_tag user.avatar, options
  88     end
  89   end
  90
  91   def user_avatar_variant(user, options)
  92     if user.avatar.variable?
  93       user.avatar.variant(options)
  94     else
  95       user.avatar
  96     end
  97   end
  98
  99   # Gravatar support
 100
 101   # See http://en.gravatar.com/site/implement/images/ for details.
 102   def user_gravatar_url(user, options = {})
 103     size = options[:size] || 100
 104     hash = Digest::MD5.hexdigest(user.email.downcase)
 105     default_image_url = image_url("avatar_large.png")
 106     "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
 107   end
 108
 109   def user_gravatar_tag(user, options = {})
 110     url = user_gravatar_url(user, options)
 111     options[:height] = options[:width] = options.delete(:size) || 100
 112     image_tag url, options
 113   end
 114 end