drupal/modules/comment/comment.install

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<?php
// $Id$
/**
* @file
* Install, update and uninstall functions for the comment module.
*/
/**
* Implements hook_uninstall().
*/
function comment_uninstall() {
// Delete comment_body field.
field_delete_field('comment_body');
// Remove variables.
variable_del('comment_block_count');
$node_types = array_keys(node_type_get_types());
foreach ($node_types as $node_type) {
variable_del('comment_' . $node_type);
variable_del('comment_anonymous_' . $node_type);
variable_del('comment_controls_' . $node_type);
variable_del('comment_default_mode_' . $node_type);
variable_del('comment_default_order_' . $node_type);
variable_del('comment_default_per_page_' . $node_type);
variable_del('comment_form_location_' . $node_type);
variable_del('comment_preview_' . $node_type);
variable_del('comment_subject_field_' . $node_type);
}
}
/**
* Implements hook_enable().
*/
function comment_enable() {
// Insert records into the node_comment_statistics for nodes that are missing.
$query = db_select('node', 'n');
$query->leftJoin('node_comment_statistics', 'ncs', 'ncs.nid = n.nid');
$query->addField('n', 'changed', 'last_comment_timestamp');
$query->addField('n', 'uid', 'last_comment_uid');
$query->addField('n', 'nid');
$query->addExpression('0', 'comment_count');
$query->addExpression('NULL', 'last_comment_name');
$query->isNull('ncs.comment_count');
db_insert('node_comment_statistics')
->from($query)
->execute();
// Create comment body field.
// @todo this should be done in comment_install, but causes exceptions
// in testing because the list of fields types is not available in
// hook_install(): _field_info_collate_types() returns an empty array.
if (!field_info_field('comment_body')) {
$field = array(
'field_name' => 'comment_body',
'type' => 'text_long',
);
field_create_field($field);
}
// There is a separate comment bundle for each node type to allow for
// per-node-type customization of comment fields. Each one of these bundles
// needs a comment body field instance. A comment bundle is needed even for
// node types whose comments are disabled by default, because individual nodes
// may override that default.
// @todo This should be changed to call field_attach_create_bundle() instead,
// and a comment_field_attach_create_bundle() function should be added to
// handle the creation of the comment body field instance.
foreach (node_type_get_types() as $type => $info) {
if (!field_info_instance('comment', 'comment_body', 'comment_node_' . $info->type)) {
_comment_body_field_instance_create($info);
}
}
}
/**
* @defgroup updates-6.x-to-7.x Comment updates from 6.x to 7.x
* @{
*/
/**
* Remove comment settings for page ordering.
*/
function comment_update_7000() {
$types = node_type_get_types();
foreach ($types as $type => $object) {
variable_del('comment_default_order' . $type);
}
return t('Comment order settings removed.');
}
/**
* Change comment status from published being 0 to being 1
*/
function comment_update_7001() {
$changes = array(
3 => 0,
0 => 1,
1 => 3,
);
foreach ($changes as $old => $new) {
db_update('comments')
->fields(array('status' => $new))
->condition('status', $old)
->execute();
}
}
/**
* Rename {comments} table to {comment}.
*/
function comment_update_7002() {
db_rename_table('comments', 'comment');
}
/**
* Improve indexes on the comment table.
*/
function comment_update_7003() {
db_drop_index('comment', 'status');
db_drop_index('comment', 'pid');
db_add_index('comment', 'comment_pid_status', array('pid', 'status'));
db_add_index('comment', 'comment_num_new', array('nid', 'timestamp', 'status'));
}
/**
* Rename comment display setting variables.
*/
function comment_update_7004() {
$types = node_type_get_types();
foreach ($types as $type => $object) {
$setting = variable_get('comment_default_mode_' . $type, 4);
if ($setting == 3 || $setting == 4) {
variable_set('comment_default_mode_' . $type, 1);
}
else {
variable_set('comment_default_mode_' . $type, 0);
}
}
}
/**
* Create comment Field API bundles.
*/
function comment_update_7005() {
foreach (node_type_get_types() as $info) {
field_attach_create_bundle('comment', 'comment_node_' . $info->type);
}
}
/**
* Create user related indexes.
*/
function comment_update_7006() {
db_add_index('comment', 'comment_uid', array('uid'));
db_add_index('node_comment_statistics', 'last_comment_uid', array('last_comment_uid'));
}
/**
* Split {comment}.timestamp into {comment}.created and {comment}.changed.
*/
function comment_update_7007() {
// Drop the index associated to timestamp.
db_drop_index('comment', 'comment_num_new');
// Create a created column.
db_add_field('comment', 'created', array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
));
// Rename the timestamp column to changed.
db_change_field('comment', 'timestamp', 'changed', array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
));
// Recreate the index.
db_add_index('comment', 'comment_num_new', array('nid', 'changed', 'status'));
// Migrate the data.
// @todo db_update() should support this.
db_query('UPDATE {comment} SET created = changed');
}
/**
* Add language column to the {comment} table.
*/
function comment_update_7008() {
// Create a language column.
db_add_field('comment', 'language', array(
'type' => 'varchar',
'length' => 12,
'not null' => TRUE,
'default' => '',
));
// Create the index.
db_add_index('comment', 'comment_nid_language', array('nid', 'language'));
}
/**
* Update preview setting variable to use new constants
*/
function comment_update_7009() {
foreach (node_type_get_types() as $type => $object) {
// There were only two comment modes in the past:
// - 1 was 'required' previously, convert into DRUPAL_REQUIRED (2).
// - 0 was 'optional' previously, convert into DRUPAL_OPTIONAL (1).
$original_preview = variable_get('comment_preview_' . $type, 1);
if ($original_preview) {
$preview = DRUPAL_REQUIRED;
}
else {
$preview = DRUPAL_OPTIONAL;
}
variable_set('comment_preview_' . $type, $preview);
}
return array();
}
/**
* Add {node_comment_statistics}.cid column.
*/
function comment_update_7010() {
db_add_field('node_comment_statistics', 'cid', array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The {comment}.cid of the last comment.',
));
db_add_index('node_comment_statistics', 'cid', array('cid'));
}
/**
* Add an index to node_comment_statistics on comment_count.
*/
function comment_update_7011() {
db_add_index('node_comment_statistics', 'comment_count', array('comment_count'));
}
/**
* Create the comment_body field.
*/
function comment_update_7012() {
// Create comment body field.
$field = array(
'field_name' => 'comment_body',
'type' => 'text_long',
);
field_create_field($field);
// Add the field to comments for all existing bundles.
$body_instance = array(
'field_name' => 'comment_body',
'label' => 'Comment',
'object_type' => 'comment',
'settings' => array('text_processing' => 1),
// Hide field label by default.
'display' => array(
'full' => array(
'label' => 'hidden',
),
),
);
foreach (node_type_get_types() as $info) {
$body_instance['bundle'] = 'comment_node_' . $info->type;
field_create_instance($body_instance);
}
}
/**
* Migrate data from the comment field to field storage.
*/
function comment_update_7013(&$sandbox) {
// This is a multipass update. First set up some comment variables.
if (empty($sandbox['total'])) {
$comments = (bool) db_query_range('SELECT 1 FROM {comment}', 0, 1)->fetchField();
$sandbox['types'] = array();
if ($comments) {
$sandbox['etid'] = _field_sql_storage_etid('comment');
$sandbox['types'] = node_type_get_types();
}
$sandbox['total'] = count($sandbox['types']);
}
if (!empty($sandbox['types'])) {
$type = array_shift($sandbox['types']);
$query = db_select('comment', 'c');
$query->innerJoin('node', 'n', 'c.nid = n.nid AND n.type = :type', array(':type' => $type->type));
$query->addField('c', 'cid', 'entity_id');
$query->addExpression("'comment_node_$type->type'", 'bundle');
$query->addExpression($sandbox['etid'], 'etid');
$query->addExpression('0', 'deleted');
$query->addExpression("'" . LANGUAGE_NONE . "'", 'language');
$query->addExpression('0', 'delta');
$query->addField('c', 'comment', 'comment_body_value');
$query->addField('c', 'format', 'comment_body_format');
$comment_body = field_info_field('comment_body');
$comment_body_table = _field_sql_storage_tablename($comment_body);
db_insert($comment_body_table)
->from($query)
->execute();
}
// On the last pass of the update, $sandbox['types'] will be empty.
if (empty($sandbox['types'])) {
db_drop_field('comment', 'comment');
db_drop_field('comment', 'format');
}
$sandbox['#finished'] = 1 - count($sandbox['types']) / $sandbox['total'];
}
/**
* @} End of "defgroup updates-6.x-to-7.x"
* The next series of updates should start at 8000.
*/
/**
* Implements hook_schema().
*/
function comment_schema() {
$schema['comment'] = array(
'description' => 'Stores comments and associated data.',
'fields' => array(
'cid' => array(
'type' => 'serial',
'not null' => TRUE,
'description' => 'Primary Key: Unique comment ID.',
),
'pid' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The {comment}.cid to which this comment is a reply. If set to 0, this comment is not a reply to an existing comment.',
),
'nid' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The {node}.nid to which this comment is a reply.',
),
'uid' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The {users}.uid who authored the comment. If set to 0, this comment was created by an anonymous user.',
),
'subject' => array(
'type' => 'varchar',
'length' => 64,
'not null' => TRUE,
'default' => '',
'description' => 'The comment title.',
),
'hostname' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'default' => '',
'description' => "The author's host name.",
),
'created' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The time that the comment was created, as a Unix timestamp.',
),
'changed' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The time that the comment was last edited, as a Unix timestamp.',
),
'status' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 1,
'size' => 'tiny',
'description' => 'The published status of a comment. (0 = Not Published, 1 = Published)',
),
'thread' => array(
'type' => 'varchar',
'length' => 255,
'not null' => TRUE,
'description' => "The vancode representation of the comment's place in a thread.",
),
'name' => array(
'type' => 'varchar',
'length' => 60,
'not null' => FALSE,
'description' => "The comment author's name. Uses {users}.name if the user is logged in, otherwise uses the value typed into the comment form.",
),
'mail' => array(
'type' => 'varchar',
'length' => 64,
'not null' => FALSE,
'description' => "The comment author's e-mail address from the comment form, if user is anonymous, and the 'Anonymous users may/must leave their contact information' setting is turned on.",
),
'homepage' => array(
'type' => 'varchar',
'length' => 255,
'not null' => FALSE,
'description' => "The comment author's home page address from the comment form, if user is anonymous, and the 'Anonymous users may/must leave their contact information' setting is turned on.",
),
'language' => array(
'description' => 'The {languages}.language of this comment.',
'type' => 'varchar',
'length' => 12,
'not null' => TRUE,
'default' => '',
),
),
'indexes' => array(
'comment_status_pid' => array('pid', 'status'),
'comment_num_new' => array('nid', 'changed', 'status'),
'comment_uid' => array('uid'),
'comment_nid_language' => array('nid', 'language'),
),
'primary key' => array('cid'),
'foreign keys' => array(
'nid' => array('node' => 'nid'),
'uid' => array('users' => 'uid'),
),
);
$schema['node_comment_statistics'] = array(
'description' => 'Maintains statistics of node and comments posts to show "new" and "updated" flags.',
'fields' => array(
'nid' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'The {node}.nid for which the statistics are compiled.',
),
'cid' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The {comment}.cid of the last comment.',
),
'last_comment_timestamp' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The Unix timestamp of the last comment that was posted within this node, from {comment}.timestamp.',
),
'last_comment_name' => array(
'type' => 'varchar',
'length' => 60,
'not null' => FALSE,
'description' => 'The name of the latest author to post a comment on this node, from {comment}.name.',
),
'last_comment_uid' => array(
'type' => 'int',
'not null' => TRUE,
'default' => 0,
'description' => 'The user ID of the latest author to post a comment on this node, from {comment}.uid.',
),
'comment_count' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'The total number of comments on this node.',
),
),
'primary key' => array('nid'),
'indexes' => array(
'node_comment_timestamp' => array('last_comment_timestamp'),
'comment_count' => array('comment_count'),
'last_comment_uid' => array('last_comment_uid'),
),
'foreign keys' => array(
'nid' => array('node' => 'nid'),
'last_comment_uid' => array('users' => 'uid'),
),
);
return $schema;
}