add meta.comparison_partial_time_labels

Author: RobertJoonas

lib/plausible/stats/query_result.ex

@@ -65,6 +65,7 @@ defmodule Plausible.Stats.QueryResult do
     |> add_comparison_time_label_result_indices_meta(runner)
     |> add_present_index_meta(runner.main_query)
     |> add_partial_time_labels_meta(runner.main_query)
+    |> add_comparison_partial_time_labels_meta(runner)
     |> add_total_rows_meta(runner.main_query, runner.total_rows)
     |> Enum.sort_by(&elem(&1, 0))
   end
@@ -180,6 +181,20 @@ defmodule Plausible.Stats.QueryResult do
     end
   end
 
+  defp add_comparison_partial_time_labels_meta(meta, %QueryRunner{main_query: query} = runner) do
+    comparison_time_labels = meta[:comparison_time_labels]
+
+    if query.include.partial_time_labels and is_list(comparison_time_labels) do
+      Map.put(
+        meta,
+        :comparison_partial_time_labels,
+        Plausible.Stats.Time.partial_time_labels(comparison_time_labels, runner.comparison_query)
+      )
+    else
+      meta
+    end
+  end
+
   defp add_total_rows_meta(meta, query, total_rows) do
     if query.include.total_rows do
       Map.put(meta, :total_rows, total_rows)

test/plausible_web/controllers/api/stats_controller/main_graph_test.exs

@@ -1533,6 +1533,31 @@ defmodule PlausibleWeb.Api.StatsController.MainGraphTest do
       assert response["meta"]["partial_time_labels"] == []
     end
 
+    test "returns comparison_partial_time_labels", %{
+      conn: conn,
+      site: site
+    } do
+      response =
+        do_query(conn, site, %{
+          "date_range" => ["2026-02-08", "2026-02-25"],
+          "metrics" => ["visitors"],
+          "dimensions" => ["time:week"],
+          "include" => %{
+            "time_labels" => true,
+            "partial_time_labels" => true,
+            "compare" => ["2026-01-08", "2026-01-25"]
+          }
+        })
+
+      assert response["meta"]["comparison_time_labels"] == [
+               "2026-01-08",
+               "2026-01-12",
+               "2026-01-19"
+             ]
+
+      assert response["meta"]["comparison_partial_time_labels"] == ["2026-01-08"]
+    end
+
     test "returns stats for a day with a minute interval", %{conn: conn, site: site} do
       populate_stats(site, [
         build(:pageview, timestamp: ~N[2023-03-01 12:00:00])