indico_feeds.install

<?php
function indico_feeds_install() {
    if(function_exists('field_features_rebuild')) {
        // Ensure our fields are up to date
        field_features_rebuild('indico_feeds');
    }
}


/**
 * Add feature field: field_indico_ical to provide calendar info to indico_feeds.
 * Please after running upgrade do:
 *   - Clear caches and rebuild registry.
 *   - You may need to add a mapping on your indico feed processor in case you want to use field_indico_ical.
 *     So under admin/modules go to configure indico feeds -> Processor 
 *     -> Mapping ->  Source:ical <=> Target:Indico iCal
 */
function indico_feeds_update_7200() {
    if (!field_info_field('field_indico_ical')) {
        watchdog('Indico feeds','update being called'); 
        $field = array(
            'active' => '1',
            'cardinality' => '1',
            'deleted' => '0',
            'entity_types' => array(),
            'field_name' => 'field_indico_ical',
            'foreign keys' => array(
                'format' => array(
                    'columns' => array(
                        'format' => 'format',
                    ),
                    'table' => 'filter_format',
                ),
            ),
            'indexes' => array(
                'format' => array(
                    0 => 'format',
                ),
            ),
            'module' => 'text',
            'settings' => array(
                'max_length' => '255',
            ),
            'translatable' => '0',
            'type' => 'text',
        );
        field_create_field($field);

        // Create the instance on the bundle.
        $instance =  array(
            'bundle' => 'indico_event',
            'default_value' => NULL,
            'deleted' => '0',
            'description' => 'This field contains the link to the iCal Indico event.',
            'display' => array(
                'default' => array(
                    'label' => 'inline',
                    'module' => 'text',
                    'settings' => array(),
                    'type' => 'text_default',
                    'weight' => '10',
                ),
                'teaser' => array(
                    'label' => 'above',
                    'settings' => array(),
                    'type' => 'hidden',
                    'weight' => 0,
                ),
            ),
            'entity_type' => 'node',
            'field_name' => 'field_indico_ical',
            'label' => 'Indico iCal',
            'required' => 1,
            'settings' => array(
                'text_processing' => '0',
                'user_register_form' => FALSE,
            ),
            'widget' => array(
                'active' => 1,
                'module' => 'text',
                'settings' => array(
                    'size' => '60',
                ),
                'type' => 'text_textfield',
                'weight' => '12',
            ),
        );

        field_create_instance($instance);
    }
    watchdog('Indico feeds','Update was run'); 
}

function indico_feeds_uninstall() {
    drupal_load('module', 'indico_feeds');

    // Delete all indico importers
    foreach(feeds_importer_load_all(true) as $importer) {
        if(_indico_feeds_is_indico_importer($importer)) {
            $importer->delete();
        }
    }
    feeds_cache_clear();

    // Delete all nodes created by us
    $res = db_select('node')
        ->fields('node', array('nid'))
        ->condition('type', array('indico_feed', 'indico_event'))
        ->execute()
        ->fetchAll();
    $nids = array();
    foreach($res as $row) {
        $nids[] = $row->nid;
    }
    node_delete_multiple($nids);

    // Delete out content types
    foreach(array('indico_event', 'indico_feed') as $type) {
        node_type_delete($type);
        variable_del('node_preview_' . $type);
    }
    node_types_rebuild();
}