Let filters to be set before running reports

lang/en/block_configurable_reports.php

@@ -65,6 +65,7 @@
 $string['field'] = "Field";
 
 // Report form.
+$string['applyfilters'] = "Apply filters to run the report";
 $string['typeofreport'] = "Type of report";
 $string['enablejsordering'] = "Enable JavaScript ordering";
 $string['enablejspagination'] = "Enable JavaScript Pagination";

report.class.php

@@ -1011,7 +1011,11 @@ public function print_report_page(moodle_page $moodlepage) {
 
             $this->print_export_options();
         } else {
-            echo '<div class="centerpara">' . get_string('norecordsfound', 'block_configurable_reports') . '</div>';
+            if (isset($this->filterform) && !$this->filterform->get_data()) {
+                echo '<div class="centerpara">'.get_string('applyfilters', 'block_configurable_reports').'</div>';
+            } else {
+                echo '<div class="centerpara">'.get_string('norecordsfound', 'block_configurable_reports').'</div>';
+            }
         }
 
         if ($this->config->displayprintbutton) {

reports/sql/report.class.php

@@ -182,7 +182,7 @@ public function create_report(): bool {
 
             $sql = $this->prepare_sql($sql);
 
-            if ($rs = $this->execute_query($sql)) {
+            if (isset($this->filterform) && $this->filterform->get_data() && $rs = $this->execute_query($sql)) {
                 foreach ($rs as $row) {
                     if (empty($finaltable)) {
                         foreach ($row as $colname => $value) {

viewreport.php

@@ -75,13 +75,13 @@
 if ($download && $report->type === "sql") {
     $reportclass->set_forexport(true);
 }
+$reportclass->check_filters_request();
 $reportclass->create_report();
 
 $action = (!empty($download)) ? 'download' : 'view';
 
 // No download, build navigation header etc..
 if (!$download) {
-    $reportclass->check_filters_request();
     $reportname = format_string($report->name);
     $navlinks = [];