1 files changed, 22 insertions, 0 deletions
diff --git a/app/presenters/key_presenter.rb b/app/presenters/key_presenter.rb
new file mode 100644
index 00000000000..e3eb5feedbf
--- /dev/null
+++ b/app/presenters/key_presenter.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class KeyPresenter < Gitlab::View::Presenter::Delegated # rubocop:disable Gitlab/NamespacedClass
+  presents ::Key, as: :key_object
+
+  def humanized_error_message(type: :key)
+    if !key_object.public_key.valid?
+      help_link = help_page_link(_('supported SSH public key.'), 'user/ssh', 'supported-ssh-key-types')
+
+      _('%{type} must be a %{help_link}').html_safe % { type: type.to_s.titleize, help_link: help_link }
+    else
+      key_object.errors.full_messages.join(', ').html_safe
+    end
+  end
+
+  private
+
+  def help_page_link(title, path, anchor)
+    ActionController::Base.helpers.link_to(title, help_page_path(path, anchor: anchor),
+      target: '_blank', rel: 'noopener noreferrer')
+  end
+end