1 files changed, 38 insertions, 0 deletions
diff --git a/actiontext/lib/action_text/attachables/content_attachment.rb b/actiontext/lib/action_text/attachables/content_attachment.rb
new file mode 100644
index 0000000000..804f74713f
--- /dev/null
+++ b/actiontext/lib/action_text/attachables/content_attachment.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module ActionText
+  module Attachables
+    class ContentAttachment
+      include ActiveModel::Model
+
+      def self.from_node(node)
+        if node["content-type"]
+          if matches = node["content-type"].match(/vnd\.rubyonrails\.(.+)\.html/)
+            attachment = new(name: matches[1])
+            attachment if attachment.valid?
+          end
+        end
+      end
+
+      attr_accessor :name
+      validates_inclusion_of :name, in: %w( horizontal-rule )
+
+      def attachable_plain_text_representation(caption)
+        case name
+        when "horizontal-rule"
+          " ┄ "
+        else
+          " "
+        end
+      end
+
+      def to_partial_path
+        "action_text/attachables/content_attachment"
+      end
+
+      def to_trix_content_attachment_partial_path
+        "action_text/attachables/content_attachments/#{name.underscore}"
+      end
+    end
+  end
+end