First pass at webmentions

lib/adamantium/persistence/relations/posts.rb

@@ -11,6 +11,8 @@ module Adamantium
 
             has_many :post_trips
             has_many :trips, through: :post_trips
+
+            has_many :webmentions
           end
         end
 

lib/adamantium/persistence/relations/webmentions.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module Adamantium
+  module Persistence
+    module Relations
+      class Webmentions < ROM::Relation[:sql]
+        schema :webmentions, infer: true do
+          associations do
+            belongs_to :post
+          end
+        end
+
+        auto_struct(true)
+
+        def published
+          where(self[:published_at] <= Time.now)
+        end
+      end
+    end
+  end
+end