add missing dimensions parsing

Author: RobertJoonas

lib/plausible/stats/api_query_parser.ex

@@ -221,14 +221,14 @@ defmodule Plausible.Stats.ApiQueryParser do
     end
   end
 
-  defp parse_dimensions(dimensions) when is_list(dimensions) do
+  def parse_dimensions(dimensions) when is_list(dimensions) do
     parse_list(
       dimensions,
       &parse_dimension_entry(&1, "Invalid dimensions '#{i(dimensions)}'")
     )
   end
 
-  defp parse_dimensions(nil), do: {:ok, []}
+  def parse_dimensions(nil), do: {:ok, []}
 
   def parse_order_by(order_by) when is_list(order_by) do
     parse_list(order_by, &parse_order_by_entry/1)

lib/plausible/stats/dashboard/query_parser.ex

@@ -17,13 +17,15 @@ defmodule Plausible.Stats.Dashboard.QueryParser do
   def parse(params) 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"]),
          {:ok, filters} <- ApiQueryParser.parse_filters(params["filters"]),
          {:ok, metrics} <- parse_metrics(params),
          {:ok, include} <- parse_include(params) do
       {:ok,
        ParsedQueryParams.new!(%{
          input_date_range: input_date_range,
          relative_date: relative_date,
+         dimensions: dimensions,
          filters: filters,
          metrics: metrics,
          include: include,