Stop importing page referrer from GA4 (#4012)

* Stop importing page referrer from GA4

* Update GA4 import fixture

* Update fixture-based test

lib/plausible/google/ga4/report_request.ex

@@ -46,8 +46,7 @@ defmodule Plausible.Google.GA4.ReportRequest do
           "sessionMedium",
           "sessionCampaignName",
           "sessionManualAdContent",
-          "sessionGoogleAdsKeyword",
-          "pageReferrer"
+          "sessionGoogleAdsKeyword"
         ],
         metrics: [
           "screenPageViews",

lib/plausible/imported/google_analytics4.ex

@@ -96,19 +96,12 @@ defmodule Plausible.Imported.GoogleAnalytics4 do
   end
 
   defp new_from_report(site_id, import_id, "imported_sources", row) do
-    referrer_uri = row.dimensions |> Map.fetch!("pageReferrer") |> URI.parse()
-
-    referrer =
-      if PlausibleWeb.RefInspector.right_uri?(referrer_uri) do
-        PlausibleWeb.RefInspector.format_referrer(referrer_uri)
-      end
-
     %{
       site_id: site_id,
       import_id: import_id,
       date: get_date(row),
       source: row.dimensions |> Map.fetch!("sessionSource") |> parse_referrer(),
-      referrer: referrer,
+      referrer: nil,
       # Only `source` exists in GA4 API
       utm_source: nil,
       utm_medium: row.dimensions |> Map.fetch!("sessionMedium") |> default_if_missing(),

test/plausible/imported/google_analytics4_test.exs

@@ -82,7 +82,7 @@ defmodule Plausible.Imported.GoogleAnalytics4Test do
       Enum.each(Plausible.Imported.tables(), fn table ->
         count =
           case table do
-            "imported_sources" -> 1090
+            "imported_sources" -> 210
             "imported_visitors" -> 31
             "imported_pages" -> 3340
             "imported_entry_pages" -> 2934