lib/pleroma/web/mastodon_api/views/account_view.ex

@@ -261,6 +261,9 @@ defp do_render("show.json", %{user: user} = opts) do
         |> MediaProxy.url()
       end
 
+    last_status_at =
+      if is_nil(user.last_status_at), do: nil, else: NaiveDateTime.to_date(user.last_status_at)
+
     %{
       id: to_string(user.id),
       username: username_from_nickname(user.nickname),
@@ -289,7 +292,7 @@ defp do_render("show.json", %{user: user} = opts) do
           actor_type: user.actor_type
         }
       },
-      last_status_at: user.last_status_at,
+      last_status_at: last_status_at,
       akkoma: %{
         instance: render("instance.json", %{instance: instance}),
         status_ttl_days: user.status_ttl_days

test/pleroma/web/mastodon_api/views/account_view_test.exs

@@ -40,7 +40,8 @@ test "Represent a user account" do
         emoji: %{"karjalanpiirakka" => "/file.png"},
         raw_bio: "valid html. a\nb\nc\nd\nf '&<>\"",
         also_known_as: ["https://shitposter.zone/users/shp"],
-        status_ttl_days: 5
+        status_ttl_days: 5,
+        last_status_at: ~N[2023-12-31T15:06:17]
       })
 
     insert(:instance, %{host: "example.com", nodeinfo: %{version: "2.1"}})
@@ -91,7 +92,7 @@ test "Represent a user account" do
         fields: []
       },
       fqn: "shp@shitposter.club",
-      last_status_at: nil,
+      last_status_at: ~D[2023-12-31],
       pleroma: %{
         ap_id: user.ap_id,
         also_known_as: ["https://shitposter.zone/users/shp"],