Put objects in inserted activties into the db.

lib/pleroma/object.ex

@@ -1,9 +1,16 @@
 defmodule Pleroma.Object do
   use Ecto.Schema
+  alias Pleroma.{Repo, Object}
+  import Ecto.Query
 
   schema "objects" do
     field :data, :map
 
     timestamps()
   end
+
+  def get_by_ap_id(ap_id) do
+    Repo.one(from object in Object,
+      where: fragment("? @> ?", object.data, ^%{id: ap_id}))
+  end
 end

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -8,6 +8,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
     map = if map["object"] do
       object = Map.put_new_lazy(map["object"], "id", &generate_object_id/0)
+      Repo.insert!(%Object{data: object})
       Map.put(map, "object", object)
     else
       map