function conditional_fields_nodeapi in Conditional Fields 5

Same name and namespace in other branches

1. 6.2 conditional_fields.module \conditional_fields_nodeapi()
2. 6 conditional_fields.module \conditional_fields_nodeapi()

Implementation of hook_nodeapi()

File

./conditional_fields.module, line 129

Code

function conditional_fields_nodeapi(&$node, $op, $teaser, $page) {
  if ($op == 'view') {

    // First we check if there any conditional fields in this node type
    $type = content_types($node->type);
    if (!($data = conditional_fields_load_data($type['type']))) {
      return;
    }

    // Then we check if user is an administrator and this content type
    // and has the show hidden fields pref enabled
    if (user_access('administer conditional fields') && variable_get('c_fields_show_all_' . $type['type'], 0)) {
      return;
    }
    $orphaned_settings = variable_get('c_fields_view_' . $node->type, C_FIELDS_ORPHANED_SHOW_TRIGGERED);
    foreach ($data as $field) {

      // Check if we must look for the controlling field in a group
      if (module_exists('fieldgroup')) {
        $group = fieldgroup_get_group($node->type, $field['control_field_name']);
      }
      else {
        $group = FALSE;
      }

      // Check if the controlling field is viewed
      $viewed = FALSE;
      if ($group && !empty($node->content[$group][$field['control_field_name']]['#value'])) {
        $viewed = TRUE;
      }
      if (!$group && !empty($node->content[$field['control_field_name']]['#value'])) {
        $viewed = TRUE;
      }

      // Create an array with the selected controlling field's values
      $current_values = array();
      if ($node->{$field['control_field_name']}) {
        foreach ($node->{$field['control_field_name']} as $value) {
          $current_values[] = $value['value'];
        }
      }
      if ($viewed) {

        // Hide the controlled field if it is not triggered
        if (!conditional_fields_is_triggered($current_values, $field['trigger_values'])) {
          if ($group) {
            unset($node->content[$group][$field['field_name']]);
            $changed_groups[$group] = $group;
          }
          else {
            unset($node->content[$field['field_name']]);
          }
        }
      }
      else {

        // Apply orphaned fields settings
        switch ($orphaned_settings) {
          case C_FIELDS_ORPHANED_SHOW_TRIGGERED:

            // If the field was triggered, don't hide it
            if (conditional_fields_is_triggered($current_values, $field['trigger_values'])) {
              break;
            }
          case C_FIELDS_ORPHANED_HIDE:

            // We hide the field
            if ($group) {
              unset($node->content[$group][$field['field_name']]);
              $changed_groups[$group] = $group;
            }
            else {
              unset($node->content[$field['field_name']]);
            }
          case C_FIELDS_ORPHANED_SHOW_ALL:

            // Nothing to do...
            break;
        }
      }
    }

    // If a group is now empty, we should hide it too
    foreach ((array) $changed_groups as $group) {
      $keep = FALSE;
      foreach ((array) $node->content[$group] as $key => $group_content) {
        if (substr($key, 0, 6) == 'field_' && $group_content['#value'] !== '') {
          $keep = TRUE;
        }
      }
      if ($keep == FALSE) {
        unset($node->content[$group]);
      }
    }
  }
}