allow fixing now in the new endpoint via conn.private

Author: RobertJoonas

lib/plausible/stats/dashboard/query_parser.ex

@@ -14,7 +14,7 @@ defmodule Plausible.Stats.Dashboard.QueryParser do
 
   @valid_comparison_shorthand_keys Map.keys(@valid_comparison_shorthands)
 
-  def parse(params) do
+  def parse(params, opts \\ []) do
     with {:ok, input_date_range} <- parse_input_date_range(params),
          {:ok, relative_date} <- parse_relative_date(params),
          {:ok, dimensions} <- ApiQueryParser.parse_dimensions(params["dimensions"]),
@@ -29,7 +29,8 @@ defmodule Plausible.Stats.Dashboard.QueryParser do
          filters: filters,
          metrics: metrics,
          include: include,
-         skip_goal_existence_check: true
+         skip_goal_existence_check: true,
+         now: Keyword.get(opts, :now)
        })}
     end
   end

lib/plausible_web/controllers/api/stats_controller.ex

@@ -31,8 +31,9 @@ defmodule PlausibleWeb.Api.StatsController do
 
   def query(conn, params) do
     site = conn.assigns.site
+    now = conn.private[:now]
 
-    with {:ok, %ParsedQueryParams{} = params} <- Dashboard.QueryParser.parse(params),
+    with {:ok, %ParsedQueryParams{} = params} <- Dashboard.QueryParser.parse(params, now: now),
          {:ok, %Query{} = query} <- QueryBuilder.build(site, params, debug_metadata(conn)) do
       query =
         if query.include.time_labels do

test/plausible/stats/dashboard/query_parser_test.exs

@@ -249,12 +249,20 @@ defmodule Plausible.Stats.Dashboard.QueryParserTest do
       params = Map.merge(@base_params, %{"metrics" => []})
       assert {:error, %QueryError{code: :invalid_metrics}} = parse(params)
     end
+  end
 
-    test "now can't be fixed externally" do
+  describe "fixing now" do
+    test "now can't be fixed externally via params" do
       params = Map.merge(@base_params, %{"now" => "2026-02-17T10:08:52.272894Z"})
       {:ok, parsed} = parse(params)
 
       assert parsed.now == nil
     end
+
+    test "now can be fixed as an optional extra argument to parse/2" do
+      {:ok, parsed} = parse(@base_params, now: ~U[2026-02-17 10:08:00Z])
+
+      assert parsed.now == ~U[2026-02-17 10:08:00Z]
+    end
   end
 end