function workflow_revert_workflow_history_alter in Workflow 7

Same name and namespace in other branches

1. 7.2 workflow_revert/workflow_revert.module \workflow_revert_workflow_history_alter()

Implements hook_workflow_history_alter(). Add an 'undo' operation for the most recent history change.

Parameters

$variables: The current workflow history information as an array. 'old_sid' - The state ID of the previous state. 'old_state_name' - The state name of the previous state. 'sid' - The state ID of the current state. 'state_name' - The state name of the current state. 'history' - The row from the workflow_node_history table.

If you want to add additional data, place it in the 'extra' value.

File

workflow_revert/workflow_revert.module, line 114

Adds an 'Revert' link to the first workflow history row.

Code

function workflow_revert_workflow_history_alter(&$variables) {
  static $first = TRUE;

  // Only mark the first row.
  if ($first) {
    $first = FALSE;

    // Let's ask other modules if the reversion is allowed.
    $node = node_load($variables['history']->nid);
    $result = module_invoke_all('workflow', 'transition permitted', $variables['sid'], $variables['old_sid'], $node);

    // Did anybody veto this choice?
    if (!in_array(FALSE, $result)) {

      // If not vetoed, mark it.
      $options = array(
        'query' => array(
          'token' => drupal_get_token('workflow_revert ' . $variables['old_sid']),
        ),
      );
      $path = 'workflow_revert/' . $variables['history']->nid . '/' . $variables['old_sid'];
      $variables['extra'] = l('Revert state change', $path, $options);
    }
  }
}