Close all subtasks when a task is closed

app/Model/Subtask.php

@@ -227,6 +227,18 @@ class Subtask extends Base
         return $result;
     }
 
+    /**
+     * Close all subtasks of a task
+     *
+     * @access public
+     * @param  integer  $task_id
+     * @return boolean
+     */
+    public function closeAll($task_id)
+    {
+        return $this->db->table(self::TABLE)->eq('task_id', $task_id)->update(array('status' => self::STATUS_DONE));
+    }
+
     /**
      * Get subtasks with consecutive positions
      *

app/Model/TaskStatus.php

@@ -62,6 +62,7 @@ class TaskStatus extends Base
      */
     public function close($task_id)
     {
+        $this->subtask->closeAll($task_id);
         return $this->changeStatus($task_id, Task::STATUS_CLOSED, time(), Task::EVENT_CLOSE);
     }
 
@@ -113,7 +114,7 @@ class TaskStatus extends Base
     }
 
     /**
-     * Check the status of task
+     * Check the status of a task
      *
      * @access private
      * @param  integer   $task_id   Task id

app/Template/task/close.php

@@ -4,7 +4,7 @@
 
 <div class="confirm">
     <p class="alert alert-info">
-        <?= t('Do you really want to close this task: "%s"?', $this->e($task['title'])) ?>
+        <?= t('Do you really want to close the task "%s" as well as all subtasks?', $this->e($task['title'])) ?>
     </p>
 
     <div class="form-actions">