Note: As of 2010/06/30, this module appears to no longer be supported. If you are interested in taking this module over, or you as the module maintainer feel this message has been posted in error, please reply to #727470: SMS Gateway module seems abandoned.
A small, quick and dirty module to manage shooting events in a simple list. The entries are displayed in a block and on a page. Users can add and manage their own items.
Drupal's default content locking strategy is optimistic, that is, two users may start to edit the same content and the one who is hitting the save button first wins the race, while the other is displayed a message stating this content has been modified by another user, changes cannot be saved. Depending on the number of editors in your organization this might not be an acceptable solution.
The Checkout module implements pessimistic locking, which means that content will be exclusively locked whenever a user starts editing it. The lock will be automatically released when the user submits the form or navigates away from the edit page.
Users may also permanently lock content, to prevent others from editing it. Content locks that have been "forgotten" can be automatically released after a configurable time span.