function filter_update_7003

Upgrade the {filter} table for core filters.

Related topics

File

modules/filter/filter.install, line 222

Code

function filter_update_7003() {
    // Duplicates the {filters} table since core cannot take care of the potential
    // contributed module filters.
    db_rename_table('filters', 'd6_upgrade_filter');
    // Creates the Drupal 7 filter table.
    $filter_table = array(
        'description' => 'Table that maps filters (HTML corrector) to text formats (Filtered HTML).',
        'fields' => array(
            'format' => array(
                'type' => 'int',
                'not null' => TRUE,
                'default' => 0,
                'description' => 'Foreign key: The {filter_format}.format to which this filter is assigned.',
            ),
            'module' => array(
                'type' => 'varchar',
                'length' => 64,
                'not null' => TRUE,
                'default' => '',
                'description' => 'The origin module of the filter.',
            ),
            'name' => array(
                'type' => 'varchar',
                'length' => 32,
                'not null' => TRUE,
                'default' => '',
                'description' => 'Name of the filter being referenced.',
            ),
            'weight' => array(
                'type' => 'int',
                'not null' => TRUE,
                'default' => 0,
                'description' => 'Weight of filter within format.',
            ),
            'status' => array(
                'type' => 'int',
                'not null' => TRUE,
                'default' => 0,
                'description' => 'Filter enabled status. (1 = enabled, 0 = disabled)',
            ),
            'settings' => array(
                'type' => 'blob',
                'not null' => FALSE,
                'size' => 'big',
                'serialize' => TRUE,
                'description' => 'A serialized array of name value pairs that store the filter settings for the specific format.',
            ),
        ),
        'primary key' => array(
            'format',
            'name',
        ),
        'indexes' => array(
            'list' => array(
                'weight',
                'module',
                'name',
            ),
        ),
    );
    db_create_table('filter', $filter_table);
    // Get an array of the renamed filter deltas, organized by module.
    $renamed_deltas = array(
        'filter' => array(
            '0' => 'filter_html',
            '1' => 'filter_autop',
            '2' => 'filter_url',
            '3' => 'filter_htmlcorrector',
            '4' => 'filter_html_escape',
        ),
        'php' => array(
            '0' => 'php_code',
        ),
    );
    // Loop through each filter and make changes to the core filter table by
    // each record from the old to the new table.
    foreach ($renamed_deltas as $module => $deltas) {
        foreach ($deltas as $old_delta => $new_name) {
            $query = db_select('d6_upgrade_filter')->fields('d6_upgrade_filter', array(
                'format',
                'weight',
            ))
                ->condition('module', $module)
                ->condition('delta', $old_delta)
                ->distinct();
            foreach ($query->execute() as $record) {
                // Port the filter settings.
                $settings = array();
                if ($new_name == 'filter_html') {
                    if ($setting = variable_get("allowed_html_{$record->format}", NULL)) {
                        $settings['allowed_html'] = $setting;
                        variable_del("allowed_html_{$record->format}");
                    }
                    if ($setting = variable_get("filter_html_help_{$record->format}", NULL)) {
                        $settings['filter_html_help'] = $setting;
                        variable_del("filter_html_help_{$record->format}");
                    }
                    if ($setting = variable_get("filter_html_nofollow_{$record->format}", NULL)) {
                        $settings['filter_html_nofollow'] = $setting;
                        variable_del("filter_html_nofollow_{$record->format}");
                    }
                }
                elseif ($new_name == 'filter_url') {
                    if ($setting = variable_get("filter_url_length_{$record->format}", NULL)) {
                        $settings['filter_url_length'] = $setting;
                        variable_del("filter_url_length_{$record->format}");
                    }
                }
                db_insert('filter')->fields(array(
                    'format' => $record->format,
                    'module' => $module,
                    'name' => $new_name,
                    'weight' => $record->weight,
                    'settings' => serialize($settings),
                    'status' => 1,
                ))
                    ->execute();
            }
            db_delete('d6_upgrade_filter')->condition('module', $module)
                ->condition('delta', $old_delta)
                ->execute();
        }
    }
}