Club Drupal

<?php

/**

 * @file

 * Update Views 1 views provided by both views_bookmark and flag modules.

 */

/**

 * Implements hook_views_convert().

 *

 * Intervene to convert field values from the Views 1 format to the

 * Views 2 format. Intervene only if $view->add_item() won't produce

 * the right results, usually needed to set field options or values.

 */

function flag_views_convert($display, $type, &$view, $field, $id) {

  static $flag_name;

  // First, replace any sign of views_bookmark with flag's Views 1 equivelant.

  $key_search = array(

    '^views_bookmark_ops_([0-9]+)' => 'flag_ops_',

    '^views_bookmark_nodes_([0-9]+)' => 'flag_content_',

    '^views_bookmark_users_([0-9]+)' => 'flag_users_',

    '^views_bookmark_node_count_([0-9]+)' => 'flag_counts_',

  );

  foreach ($field as $property => $value) {

    foreach ($key_search as $search => $replace) {

      if (!empty($value) && is_string($value) && preg_match('/' . $search . '/', $value, $matches)) {

        $flag = flag_get_flag(NULL, $matches[1]);

        $replace = $replace . $flag->name;

        $field[$property] = preg_replace('/' . $search . '/', $replace, $value);

      }

    }

  }

  // Create a table/field identifier for this field.

  foreach (array('flag_ops_', 'flag_content_', 'flag_users_', 'flag_counts_') as $table) {

    if (strpos($field['tablename'], $table) === 0) {

      $name = str_replace($table, '', $field['tablename']);

      if (!empty($name) && !isset($flag_name)) {

        $flag_name = $name;

      }

    }

  }

  // Now update values, options, etc. to those selected in the imported view.

  switch ($type) {

    case 'field':

      switch ($id) {

        case 'ops':

          $new_field = array(

            'label' => $field['label'],

            'id' => 'ops',

            'table' => 'flagging',

            'field' => 'ops',

            'relationship' => 'flag_content_rel',

          );

          $new_rel = 'flag_content_rel';

          $flag_content_rel_user = 'current';

          break;

        case 'count':

          $new_field = array(

            'label' => $field['label'],

            'id' => 'count',

            'table' => 'flag_counts',

            'field' => 'count',

            'relationship' => 'flag_counts_rel',

          );

          $new_rel = 'flag_counts_rel';

          break;

        case 'name':

          $new_field = array(

            'label' => $field['label'],

            'link_to_user' => 1,

            'id' => 'name',

            'table' => 'users',

            'field' => 'name',

            'relationship' => 'uid',

          );

          $new_rel = 'uid';

          break;

      }

      break;

    case 'filter':

    case 'exposed_filter':

      switch ($id) {

        case 'uid':

          // The flagging uid filter means "Include content only flagged by

          // the current user". In D6, this is no longer a filter, but instead

          // part of the relationship. Make the relationship join on the uid.

          if ($field['value'] == '***CURRENT_USER***') {

            $new_rel = 'flag_content_rel';

            $flag_content_rel_user = 'current';

          }

          // Remove the old filter.

          $view->set_item('default', $type, $id, NULL);

          break;

        case 'timestamp':

          $new_field = array(

            'operator' => $field['operator'],

            'value' => flag_views_convert_timestamp_value($field['value']),

            'group' => 0,

            'id' => 'timestamp',

            'table' => 'flagging',

            'field' => 'timestamp',

            'relationship' => 'flag_content_rel',

            'exposed' => $type == 'exposed_filter' ? 1 : 0,

          );

          $new_rel = 'flag_content_rel';

          drupal_set_message(t('Flag is not able to convert the <em>Flagged time</em> filter. It\'s value is currently empty, but needs to be populated to work properly.'), 'warning');

          break;

        case 'count':

          $new_field = array(

            'operator' => $field['operator'],

            'value' => array('value' => $field['value']),

            'group' => 0,

            'id' => 'count',

            'table' => 'flag_counts',

            'field' => 'count',

            'relationship' => 'flag_counts_rel',

            'exposed' => $type == 'exposed_filter' ? 1 : 0,

          );

          $new_rel = 'flag_counts_rel';

          break;

      }

      break;

    case 'argument':

      // Flag in Drupal 5 only provides one argument, and in Views 1 arguments

      // weren't given and ID, so we use the field type.

      if (strpos($field['type'], 'flag_content_') === 0) {

        $new_field = array(

          'id' => 'uid',

          'table' => 'users',

          'field' => 'uid',

          'relationship' => 'uid',

        );

        $new_rel = 'uid';

      }

      break;

    case 'sort':

      switch ($id) {

        case 'count':

          $new_field = array(

            'order' => $field['sortorder'],

            'id' => 'count',

            'table' => 'flag_counts',

            'field' => 'count',

            'relationship' => 'flag_counts_rel',

          );

          $new_rel = 'flag_counts_rel';

          break;

        case 'timestamp':

          $new_field = array(

            'order' => $field['sortorder'],

            'id' => 'timestamp',

            'table' => 'flagging',

            'field' => 'timestamp',

            'relationship' => 'flag_content_rel',

          );

          $new_rel = 'flag_content_rel';

          break;

      }

      break;

  }

  // Add any new fields.

  if (isset($new_field)) {

    // Exposed filters are now wrapped into filters.

    $type = $type == 'exposed_filter' ? 'filter' : $type;

    // Update the type in the view options.

    $view->set_item('default', $type, $id, $new_field);

  }

  // Add any new relationships (but only once per view).

  if (isset($new_rel) && !isset($view->display[$display]->display_options['relationships'][$new_rel])) {

    if ($new_rel == 'flag_content_rel') {

      $view->display[$display]->display_options['relationships'][$new_rel] = array(

        'label' => $flag_name,

        'required' => 1,

        'flag' => $flag_name,

        'user_scope' => 'any',

        'id' => 'flag_content_rel',

        'table' => 'node',

        'field' => 'flag_content_rel',

        'relationship' => 'none',

      );

    }

    elseif ($new_rel == 'flag_counts_rel') {

      $view->display[$display]->display_options['relationships'][$new_rel] = array(

        'label' => $flag_name . ' counts',

        'required' => 0,

        'flag' => $flag_name,

        'id' => 'flag_counts_rel',

        'table' => 'node',

        'field' => 'flag_counts_rel',

        'relationship' => 'none',

      );

    }

    elseif ($new_rel == 'uid') {

      $view->display[$display]->display_options['relationships'][$new_rel] = array(

        'label' => isset($flag_name) ? $flag_name . ' user' : 'user',

        'required' => 0,

        'id' => 'uid',

        'table' => 'flagging',

        'field' => 'uid',

        'relationship' => 'flag_content_rel',

      );

    }

  }

  // Modify relationships if needed.

  if (isset($flag_content_rel_user) && isset($view->display[$display]->display_options['relationships']['flag_content_rel'])) {

    $view->display[$display]->display_options['relationships']['flag_content_rel']['user_scope'] = 'current';

  }

}

/**

 * In Views 1, dates were simply stored as a single string. In Views 2, the

 * value is stored as an array of options.

 */

function flag_views_convert_timestamp_value($value) {

  $type = 'date';

  if (stripos($value, 'now') !== FALSE) {

    $type = 'offset';

    $value = trim(str_ireplace('now', '', $value));

  }

  return array(

    'type' => $type,

    'value' => $value,

    'min' => '',

    'max' => '',

  );

}