function file_entity_install in D7 Media 7

Implements hook_install().

File

file_entity/file_entity.install, line 123

Install, update and uninstall functions for the file_entity module.

Code

function file_entity_install() {
  $schema = array();
  file_entity_schema_alter($schema);
  $spec = $schema['file_managed']['fields']['type'];
  $indexes_new = array(
    'indexes' => $schema['file_managed']['indexes'],
  );

  // If another module (e.g., Media) had added a {file_managed}.type field,
  // then change it to the expected specification. Otherwise, add the field.
  if (db_field_exists('file_managed', 'type')) {

    // db_change_field() will fail if any records have type=NULL, so update
    // them to the new default value.
    db_update('file_managed')
      ->fields(array(
      'type' => $spec['default'],
    ))
      ->isNull('type')
      ->execute();

    // Indexes using a field being changed must be dropped prior to calling
    // db_change_field(). However, the database API doesn't provide a way to do
    // this without knowing what the old indexes are. Therefore, it is the
    // responsibility of the module that added them to drop them prior to
    // allowing this module to be installed.
    db_change_field('file_managed', 'type', 'type', $spec, $indexes_new);
  }
  else {
    db_add_field('file_managed', 'type', $spec, $indexes_new);
  }
}