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