[QRB Calc] Added some error checking and rounding of coordinates.

application/controllers/Qrbcalc.php

@@ -50,8 +50,15 @@ class Qrbcalc extends CI_Controller {
 		$data['result'] = $this->qra->bearing($locator1, $locator2, $measurement_base);
 		$data['distance'] = $this->qra->distance($locator1, $locator2, $measurement_base) . $var_dist;
 		$data['bearing'] = $this->qra->get_bearing($locator1, $locator2) . "º ";
-		$data['latlng1'] = $this->qra->qra2latlong($locator1);
-		$data['latlng2'] = $this->qra->qra2latlong($locator2);
+		$latlng1 = $this->qra->qra2latlong($locator1);
+		$latlng2 = $this->qra->qra2latlong($locator2);
+		$latlng1[0] = number_format((float)$latlng1[0], 3, '.', '');;
+		$latlng1[1] = number_format((float)$latlng1[1], 3, '.', '');;
+		$latlng2[0] = number_format((float)$latlng2[0], 3, '.', '');;
+		$latlng2[1] = number_format((float)$latlng2[1], 3, '.', '');;
+
+		$data['latlng1'] = $latlng1;
+		$data['latlng2'] = $latlng2;
 		header('Content-Type: application/json');
 		echo json_encode($data);
 	}

application/views/interface_assets/footer.php

@@ -457,6 +457,9 @@ function calculateQrb(form) {
     let locator1 = form.locator1.value;
     let locator2 = form.locator2.value;
 
+    $(".qrbalert").remove();
+
+    if (validateLocator(locator1) && validateLocator(locator2)) {
         $.ajax({
             url: base_url+'index.php/qrbcalc/calculate',
             type: 'post',
@@ -474,6 +477,17 @@ function calculateQrb(form) {
                 newpath(html['latlng1'], html['latlng2']);
             }
         });
+    } else {
+        $('.qrbResult').html('<div class="qrbalert alert alert-danger" role="alert">Error in locators. Please check.</div>');
+    }
+}
+
+function validateLocator(locator) {
+    if(locator.length < 4 && !(/^[a-rA-R]{2}[0-9]{2}[a-xA-X]{0,2}[0-9]{0,2}[a-xA-X]{0,2}$/.test(locator))) {
+        return false;
+    }
+    
+    return true;
 }
 
 function newpath(locator1, locator2) {