Added reload tab to entity for easier debugging of entities when cache needs clearing

tripal/includes/TripalEntityUIController.inc

@@ -91,6 +91,15 @@ class TripalEntityUIController extends EntityDefaultUIController {
       'type' => MENU_LOCAL_TASK,
       'weight' => -8,
     );
+    $items['bio_data/' . $wildcard . '/reload'] = array(
+      'title'  => 'Reload',
+      'page callback' => 'tripal_entity_reload',
+      'page arguments' => array(1),
+      'access callback' => 'tripal_entity_access',
+      'access arguments' => array('edit', 1),
+      'type' => MENU_LOCAL_TASK,
+      'weight' => 10,
+    );
     // Menu item for deleting tripal data entities.
     $items['bio_data/' . $wildcard . '/delete'] = array(
       'title'  => 'Delete',
@@ -454,6 +463,28 @@ function tripal_view_entity($entity, $view_mode = 'full') {
    }
  }
 
+/**
+ * Clears the cache of a given entity to force a reload.
+ * 
+ * @param $entity_id
+ *   The entity_id of the entity to reload.
+ */
+function tripal_entity_reload($entity) {
+  $entity_id = $entity->id;
+  $cid = 'field:TripalEntity:' . $entity_id . ':';
+  cache_clear_all($cid, 'cache_field', TRUE);
+  
+  $sql = "SELECT count(*) FROM cache_field WHERE cid like :cid";
+  $count = db_query($sql, [':cid' => $cid . '%'])->fetchField();
+  if (!isset($count) or $count > 0) {
+    drupal_set_message('Failed to clear the cache for this entity.');
+  }
+  else {
+    drupal_set_message('Cache cleared, entity reloaded');
+  }
+  drupal_goto('bio_data/' . $entity_id);
+}
+ 
  /**
   *
   */