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root / drupal7 / modules / poll / poll.install @ 582db59d

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<?php
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/**
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 * @file
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 * Install, update and uninstall functions for the poll module.
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 */
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/**
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 * Implements hook_schema().
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 */
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function poll_schema() {
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  $schema['poll'] = array(
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    'description' => 'Stores poll-specific information for poll nodes.',
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    'fields' => array(
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      'nid' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => "The poll's {node}.nid.",
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      ),
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      'runtime' => array(
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        'type' => 'int',
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The number of seconds past {node}.created during which the poll is open.',
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      ),
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      'active' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'Boolean indicating whether or not the poll is open.',
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      ),
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    ),
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    'primary key' => array('nid'),
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    'foreign keys' => array(
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      'poll_node' => array(
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        'table' => 'node',
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        'columns' => array('nid' => 'nid'),
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      ),
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    ),
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  );
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  $schema['poll_choice'] = array(
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    'description' => 'Stores information about all choices for all {poll}s.',
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    'fields' => array(
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      'chid' => array(
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        'type' => 'serial',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'description' => 'Unique identifier for a poll choice.',
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      ),
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      'nid' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The {node}.nid this choice belongs to.',
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      ),
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      'chtext' => array(
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        'type' => 'varchar',
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        'length' => 128,
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        'not null' => TRUE,
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        'default' => '',
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        'description' => 'The text for this choice.',
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        'translatable' => TRUE,
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      ),
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      'chvotes' => array(
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        'type' => 'int',
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The total number of votes this choice has received by all users.',
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      ),
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      'weight' => array(
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        'type' => 'int',
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The sort order of this choice among all choices for the same node.',
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      ),
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    ),
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    'indexes' => array(
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      'nid' => array('nid'),
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    ),
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    'primary key' => array('chid'),
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    'foreign keys' => array(
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      'choice_node' => array(
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        'table' => 'node',
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        'columns' => array('nid' => 'nid'),
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      ),
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    ),
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  );
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  $schema['poll_vote'] = array(
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    'description' => 'Stores per-{users} votes for each {poll}.',
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    'fields' => array(
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      'chid' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'description' => "The {users}'s vote for this poll.",
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      ),
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      'nid' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'description' => 'The {poll} node this vote is for.',
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      ),
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      'uid' => array(
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        'type' => 'int',
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        'unsigned' => TRUE,
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The {users}.uid this vote is from unless the voter was anonymous.',
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      ),
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      'hostname' => array(
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        'type' => 'varchar',
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        'length' => 128,
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        'not null' => TRUE,
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        'default' => '',
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        'description' => 'The IP address this vote is from unless the voter was logged in.',
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      ),
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      'timestamp' => array(
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        'type' => 'int',
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        'not null' => TRUE,
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        'default' => 0,
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        'description' => 'The timestamp of the vote creation.',
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      ),
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    ),
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    'primary key' => array('nid', 'uid', 'hostname'),
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    'foreign keys' => array(
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      'poll_node' => array(
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        'table' => 'node',
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        'columns' => array('nid' => 'nid'),
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      ),
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      'voter' => array(
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        'table' => 'users',
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        'columns' => array('uid' => 'uid'),
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      ),
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    ),
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    'indexes' => array(
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      'chid'     => array('chid'),
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      'hostname' => array('hostname'),
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      'uid' => array('uid'),
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    ),
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  );
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  return $schema;
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}
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/**
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 * Use the poll_choice primary key to record votes in poll_votes rather than
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 * the choice order. Rename chorder to weight.
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 *
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 * Rename {poll_choices} table to {poll_choice} and {poll_votes} to {poll_vote}.
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 */
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function poll_update_7001() {
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  // Add chid column and convert existing votes.
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  db_add_field('poll_votes', 'chid', array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => 0));
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  db_add_index('poll_votes', 'chid', array('chid'));
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  db_update('poll_votes')
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    ->expression('chid', Database::getConnection()->prefixTables('COALESCE((SELECT chid FROM {poll_choices} c WHERE {poll_votes}.chorder = c.chorder AND {poll_votes}.nid = c.nid), 0)'))
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    ->execute();
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  // Delete invalid votes.
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  db_delete('poll_votes')->condition('chid', 0)->execute();
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  // Remove old chorder column.
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  db_drop_field('poll_votes', 'chorder');
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  // Change the chorder column to weight in poll_choices.
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  db_change_field('poll_choices', 'chorder', 'weight', array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny'));
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  db_rename_table('poll_votes', 'poll_vote');
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  db_rename_table('poll_choices', 'poll_choice');
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}
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/**
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 * Add timestamp field to {poll_vote}.
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 */
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function poll_update_7002() {
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  $field = array(
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    'type' => 'int',
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    'not null' => TRUE,
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    'default' => 0,
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  );
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  db_add_field('poll_vote', 'timestamp', $field);
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}
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/**
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 * Change the weight column to normal int.
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 */
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function poll_update_7003() {
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  db_change_field('poll_choice', 'weight', 'weight', array(
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    'type' => 'int',
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    'not null' => TRUE,
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    'default' => 0,
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    'description' => 'The sort order of this choice among all choices for the same node.',
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  ));
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}
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/**
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 * @addtogroup updates-7.x-extra
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 * @{
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 */
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/**
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 * Update the database to match the schema.
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 */
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function poll_update_7004() {
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  // Remove field default.
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  db_change_field('poll_vote', 'chid', 'chid', array('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE));
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}
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/**
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 * @} End of "addtogroup updates-7.x-extra".
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 */