Add runtime fallback for Tools Time->duration() method

The duration() method is specific to the Tools TimeHelper. Applications
not using the Tools plugin would get a fatal error. This adds a
method_exists check with a fallback to PHP's DateInterval::format().

Port of #462 to master.

Author: dereuromark

templates/Admin/QueuedJobs/index.php

@@ -101,7 +101,11 @@
                     <?php if ($queuedJob->completed) { ?>
                     <div>
                         <small><?php
-                            echo '<span title="Duration">' . $this->Time->duration($queuedJob->completed->diff($queuedJob->fetched)) . '</span>';
+                            $interval = $queuedJob->completed->diff($queuedJob->fetched);
+                            $duration = method_exists($this->Time, 'duration')
+                                ? $this->Time->duration($interval)
+                                : ltrim($interval->format('%H:%I:%S'), '0:');
+                            echo '<span title="Duration">' . $duration . '</span>';
                         ?></small>
                     </div>
                     <?php } ?>

templates/Admin/QueuedJobs/view.php

@@ -61,8 +61,12 @@
 			<td>
 				<?= $this->Time->nice($queuedJob->fetched) ?>
 				<?php if ($queuedJob->fetched) {
+					$interval = $queuedJob->fetched->diff($queuedJob->created);
+					$duration = method_exists($this->Time, 'duration')
+						? $this->Time->duration($interval)
+						: ltrim($interval->format('%H:%I:%S'), '0:');
 					echo '<div><small>';
-					echo __d('queue', 'Delay') . ': ' . $this->Time->duration($queuedJob->fetched->diff($queuedJob->created));
+					echo __d('queue', 'Delay') . ': ' . $duration;
 					echo '</small></div>';
 				} ?>
 			</td>
@@ -72,8 +76,12 @@
 			<td>
 				<?= $this->element('Queue.ok', ['value' => $this->Time->nice($queuedJob->completed), 'ok' => (bool)$queuedJob->completed]) ?>
 				<?php if ($queuedJob->completed) {
+					$interval = $queuedJob->completed->diff($queuedJob->fetched);
+					$duration = method_exists($this->Time, 'duration')
+						? $this->Time->duration($interval)
+						: ltrim($interval->format('%H:%I:%S'), '0:');
 					echo '<div><small>';
-					echo __d('queue', 'Duration') . ': ' . $this->Time->duration($queuedJob->completed->diff($queuedJob->fetched));
+					echo __d('queue', 'Duration') . ': ' . $duration;
 					echo '</small></div>';
 				} ?>
 			</td>