addressfield_link.module

<?php
/**
 * Implements hook_ctools_plugin_directory().
 */
function addressfield_link_ctools_plugin_directory($module, $plugin) {
  if ($module == 'addressfield') {
    return 'plugins/' . $plugin;
  }
}

/**
 * Implements hook_field_attach_presave
 * Store additional address fields serialized in addressfield data column
 */
function addressfield_link_field_attach_presave($entity_type, $entity) {
  $addressfields = addressfield_link_addressfield_types();
  foreach($addressfields as $addressfield) {
    if (isset($entity->$addressfield)){
      $data = array();
      $default_fields = array_keys(addressfield_default_values());
      $default_fields[] = 'element_key';
      $language = isset($entity->language) ? $entity->language : LANGUAGE_NONE;
      foreach($entity->{$addressfield}[$language] as $delta => $fieldset) {
        $data = array();
        foreach ($fieldset as $field_key => $field_value) {
          // Compare fields with addressfield default fields and store any additional fields in data
          if (!in_array($field_key, $default_fields)){
            $data[$field_key] = $field_value; // Store additional field value
          }
        }
        if(!empty($data)){
          $entity->{$addressfield}[$language][$delta]['data'] = serialize($data);
        }
      }
    }
  }
}

/**
 * Implements hook_field_attach_load
 * Load and set additional addressfield field values from serialized data column
 */
function addressfield_link_field_attach_load($entity_type, $entities, $age, $options){
  $addressfields = addressfield_link_addressfield_types();
  foreach($entities as $key => $entity) {
    foreach($addressfields as $addressfield) {
      if (isset($entity->{$addressfield})) {
        $language = isset($entity->language) ? $entity->language : LANGUAGE_NONE;
        if (!isset($entity->{$addressfield})) continue;
        foreach($entity->{$addressfield}[$language] as $delta => $fieldset) {
          if (!empty($entity->{$addressfield}[$language][$delta]['data'])){
            // Unserialize data, else skip if string
            if ($data = unserialize($entity->{$addressfield}[$language][$delta]['data'])) {
              foreach($data as $field_key => $field_value){
                // Store unserialized data values in additional fields
                $entities[$key]->{$addressfield}[$language][$delta][$field_key] = $field_value;
              }
            }
          }
        }
      }
    }
  }
}
/**
 * Returns an array of the field names of any addressfields.
 */
function addressfield_link_addressfield_types() {
  if (!isset($addressfields)) {
    static $addressfields;
    $result = db_query("SELECT field_name FROM {field_config} WHERE type = 'addressfield'");
    $addressfields = array();
    foreach($result as $row) {
      $addressfields[] = $row->field_name;
    }
  }
  return $addressfields;
}

function _addressfield_link_render_address(&$format) {
  $address = $format['#address'];

  $format['link_block'] = array(
    '#title' => t('Link'),
    '#type' => 'addressfield_container',
    'link' => array(
      '#title' => t('Link'),
      '#size' => 15,
      '#attributes' => array('class' => array('address-link')),
      '#tag' => 'span',
    ),
  );
}