Assorted events and changes (#12496)

* Throw exception if date is empty in Period\Factory::build() since it can occur during development.

* Add API.Request.intercept event in API\Proxy so plugins can preempt normal API execution.

* Use Request::getRenamedModuleAndAction() in Visualization, as it is called in every other use of core/API/Proxy.

* Add new SitesManager.shouldPerformEmptySiteCheck event.

* Add event Request.shouldDisablePostProcessing so plugins can disable datatable post processing for certain requests.

* Make sure DataTable metadata is serialized with the table.

* Add description of API.Request.intercept, Request.shouldDisablePostProcessing, SitesManager.shouldPerformEmptySiteCheck to changelog.

1 files changed, 16 insertions, 1 deletions

diff --git a/plugins/SitesManager/SitesManager.php b/plugins/SitesManager/SitesManager.php
index c55d581e2c..f022a96c6e 100644
--- a/plugins/SitesManager/SitesManager.php
+++ b/plugins/SitesManager/SitesManager.php
@@ -68,8 +68,23 @@ class SitesManager extends \Piwik\Plugin
             return;
         }
 
+        $shouldPerformEmptySiteCheck = true;
+
+        /**
+         * Posted before checking to display the "No data has been recorded yet" message.
+         * If your Measurable should never have visits, you can use this event to make
+         * sure that message is never displayed.
+         *
+         * @param bool &$shouldPerformEmptySiteCheck Set this value to true to perform the
+         *                                           check, false if otherwise.
+         * @param int $siteId The ID of the site we would perform a check for.
+         */
+        Piwik::postEvent('SitesManager.shouldPerformEmptySiteCheck', [&$shouldPerformEmptySiteCheck, $siteId]);
+
         $trackerModel = new TrackerModel();
-        if ($trackerModel->isSiteEmpty($siteId)) {
+        if ($shouldPerformEmptySiteCheck
+            && $trackerModel->isSiteEmpty($siteId)
+        ) {
             $session = new SessionNamespace('siteWithoutData');
             if (!empty($session->ignoreMessage)) {
                 return;