public function ldap_views_plugin_query_ldap::add_field in Lightweight Directory Access Protocol (LDAP) 7.2

Same name and namespace in other branches

1. 8.2 ldap_views/plugins/ldap_views_plugin_query_ldap.inc \ldap_views_plugin_query_ldap::add_field()
2. 7 ldap_views/plugins/ldap_views_plugin_query_ldap.inc \ldap_views_plugin_query_ldap::add_field()

File

ldap_views/plugins/ldap_views_plugin_query_ldap.inc, line 36

Defines the default query object which builds and execute a ldap query.

Class

ldap_views_plugin_query_ldap

Code

public function add_field($table, $field, $alias = '', $params = []) {

  // We check for this specifically because it gets a special alias.
  if ($table == $this->base_table && $field == $this->base_field && empty($alias)) {
    $alias = $this->base_field;
  }
  if (!$alias && $table) {
    $alias = $table . '_' . $field;
  }

  // Make sure an alias is assigned.
  $alias = $alias ? $alias : $field;

  // PostgreSQL truncates aliases to 63 characters: http://drupal.org/node/571548
  // We limit the length of the original alias up to 60 characters
  // to get a unique alias later if its have duplicates.
  $alias = drupal_substr($alias, 0, 60);

  // Create a field info array.
  $field_info = [
    'field' => $field,
    'table' => $table,
    'alias' => $alias,
  ] + $params;

  // Test to see if the field is actually the same or not. Due to
  // differing parameters changing the aggregation function, we need
  // to do some automatic alias collision detection:
  $base = $alias;
  $counter = 0;
  while (!empty($this->fields[$alias]) && $this->fields[$alias] != $field_info) {
    $field_info['alias'] = $alias = $base . '_' . ++$counter;
  }
  if (empty($this->fields[$alias])) {
    $this->fields[$alias] = $field_info;
  }
  return $alias;
}