function workflow_state_delete in Workflow 6

Same name and namespace in other branches

1. 5.2 workflow.module \workflow_state_delete()
2. 5 workflow.module \workflow_state_delete()
3. 6.2 workflow.module \workflow_state_delete()

Delete a workflow state from the database, including any transitions the state was involved in and any associations with actions that were made to that transition.

Parameters

$sid: The ID of the state to delete.

$new_sid: Deleting a state will leave any nodes to which that state is assigned without a state. If $new_sid is given, it will be assigned to those orphaned nodes

2 calls to workflow_state_delete()

workflow_admin_ui_state_delete_form_submit in workflow_admin_ui/workflow_admin_ui.module

Submit handler for workflow state deletion form.

workflow_deletewf in ./workflow.module

Delete a workflow from the database. Deletes all states, transitions and node type mappings, too. Removes workflow state information from nodes participating in this workflow.

File

./workflow.module, line 894

Support workflows made up of arbitrary states.

Code

function workflow_state_delete($sid, $new_sid = NULL) {
  if ($new_sid) {

    // Assign nodes to new state so they are not orphaned.
    // A candidate for the batch API.
    $node = new stdClass();
    $node->workflow_stamp = time();
    $result = db_query("SELECT nid FROM {workflow_node} WHERE sid = %d", $sid);
    while ($data = db_fetch_object($result)) {
      $node->nid = $data->nid;
      $node->_workflow = $sid;
      _workflow_write_history($node, $new_sid, t('Previous state deleted'));
      db_query("UPDATE {workflow_node} SET sid = %d WHERE nid = %d AND sid = %d", $new_sid, $data->nid, $sid);
    }
  }
  else {

    // Go ahead and orphan nodes.
    db_query('DELETE from {workflow_node} WHERE sid = %d', $sid);
  }

  // Find out which transitions this state is involved in.
  $preexisting = array();
  $result = db_query("SELECT sid, target_sid FROM {workflow_transitions} WHERE sid = %d OR target_sid = %d", $sid, $sid);
  while ($data = db_fetch_object($result)) {
    $preexisting[$data->sid][$data->target_sid] = TRUE;
  }

  // Delete the transitions and associated actions, if any.
  foreach ($preexisting as $from => $array) {
    foreach (array_keys($array) as $target_id) {
      $tid = workflow_get_transition_id($from, $target_id);
      workflow_transition_delete($tid);
    }
  }

  // Delete the state.
  db_query("UPDATE {workflow_states} SET status = 0 WHERE sid = %d", $sid);

  // Notify interested modules.
  module_invoke_all('workflow', 'state delete', $sid, NULL, NULL);
}