<?php
/**
* @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) {
field_attach_delete_bundle('comment', 'comment_node_' . $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', 'created', '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();
}
/**
* Implements hook_modules_enabled().
*
* Creates comment body fields for node types existing before the comment module
* is enabled. We use hook_modules_enabled() rather than hook_enable() so we can
* react to node types of existing modules, and those of modules being enabled
* both before and after comment module in the loop of module_enable().
*
* 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.
*
* @see comment_node_type_insert()
*/
function comment_modules_enabled($modules) {
// Only react if comment module is one of the modules being enabled.
// hook_node_type_insert() is used to create body fields while the comment
// module is enabled.
if (in_array('comment', $modules)) {
// Ensure that the list of node types reflects newly enabled modules.
node_types_rebuild();
// Create comment body fields for each node type, if needed.
foreach (node_type_get_types() as $type => $info) {
_comment_body_field_create($info);
}
}
}
/**
* 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 alphadecimal representation of the comment's place in a thread, consisting of a base 36 string prefixed by an integer indicating its length.",
),
'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', 'status', 'created', 'cid', 'thread'),
'comment_uid' => array('uid'),
'comment_nid_language' => array('nid', 'language'),
'comment_created' => array('created'),
),
'primary key' => array('cid'),
'foreign keys' => array(
'comment_node' => array(
'table' => 'node',
'columns' => array('nid' => 'nid'),
),
'comment_author' => array(
'table' => 'users',
'columns' => array('uid' => '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}.changed.',
),
'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(
'statistics_node' => array(
'table' => 'node',
'columns' => array('nid' => 'nid'),
),
'last_comment_author' => array(
'table' => 'users',
'columns' => array(
'last_comment_uid' => 'uid',
),
),
),
);
return $schema;
}