[Accumulated Statistics] Fixed when no QSOs found.

application/models/Accumulate_model.php

@@ -8,6 +8,10 @@ class Accumulate_model extends CI_Model
 		$CI->load->model('logbooks_model');
 		$logbooks_locations_array = $CI->logbooks_model->list_logbook_relationships($this->session->userdata('active_station_logbook'));
 
+        if (!$logbooks_locations_array) {
+            return array();
+        }
+
 		$location_list = "'".implode("','",$logbooks_locations_array)."'";
 
         switch ($award) {

assets/js/sections/accumulatedstatistics.js

@@ -13,6 +13,13 @@ function accumulatePlot(form) {
 		type: 'post',
 		data: { 'Band': form.band.value, 'Award': award, 'Mode': mode, 'Period': period },
 		success: function (data) {
+			if (!$.trim(data)) {
+				$("#accumulateContainer").empty();
+				$("#accumulateContainer").append('<div class="alert alert-danger" role="alert"><a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>Nothing found!</div>');
+				$(".ld-ext-right").removeClass('running');
+				$(".ld-ext-right").prop('disabled', false);
+			}
+			else {
 				// used for switching award text in the table and the chart
 				switch (award) {
 					case 'dxcc': var awardtext = "DXCC\'s"; break;
@@ -122,5 +129,6 @@ function accumulatePlot(form) {
 					$(".buttons-csv").css("color", "white");
 				}
 			}
+		}
 	});
 }