drupal/core/modules/forum/forum.install

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<?php
/**
* @file
* Install, update, and uninstall functions for the Forum module.
*/
/**
* Implements hook_install().
*/
function forum_install() {
// Set the weight of the forum.module to 1 so it is loaded after the taxonomy.module.
db_update('system')
->fields(array('weight' => 1))
->condition('name', 'forum')
->execute();
// Forum topics are published by default, but do not have any other default
// options set (for example, they are not promoted to the front page).
// @todo Convert to default module configuration, once Node module's content
// types are converted.
variable_set('node_options_forum', array('status'));
}
/**
* Implements hook_enable().
*/
function forum_enable() {
// If we enable forum at the same time as taxonomy we need to call
// field_associate_fields() as otherwise the field won't be enabled until
// hook modules_enabled is called which takes place after hook_enable events.
field_associate_fields('taxonomy');
// Create the forum vocabulary if it does not exist.
// @todo Change Forum module so forum.settings can contain the vocabulary's
// machine name.
$config = config('forum.settings');
// If the module was disabled only, the current config may contain a valid
// vocabulary ID already.
$vocabulary = taxonomy_vocabulary_load($config->get('vocabulary'));
if (!$vocabulary) {
// If the module was installed and uninstalled previously, the vocabulary
// with machine name 'forums' might still exist.
$vocabulary = taxonomy_vocabulary_machine_name_load('forums');
if (!$vocabulary) {
// Otherwise, installing from scratch; create the vocabulary.
$vocabulary = entity_create('taxonomy_vocabulary', array(
'name' => t('Forums'),
'machine_name' => 'forums',
'langcode' => language_default()->langcode,
'description' => t('Forum navigation vocabulary'),
'hierarchy' => 1,
'module' => 'forum',
'weight' => -10,
));
taxonomy_vocabulary_save($vocabulary);
}
$config->set('vocabulary', $vocabulary->vid)->save();
}
// Create the 'taxonomy_forums' field if it doesn't already exist.
if (!field_info_field('taxonomy_forums')) {
$field = array(
'field_name' => 'taxonomy_forums',
'type' => 'taxonomy_term_reference',
'settings' => array(
'allowed_values' => array(
array(
'vocabulary' => $vocabulary->machine_name,
'parent' => 0,
),
),
),
);
field_create_field($field);
// Create a default forum so forum posts can be created.
$term = entity_create('taxonomy_term', array(
'name' => t('General discussion'),
'langcode' => language_default()->langcode,
'description' => '',
'parent' => array(0),
'vid' => $vocabulary->vid,
));
taxonomy_term_save($term);
// Create the instance on the bundle.
$instance = array(
'field_name' => 'taxonomy_forums',
'entity_type' => 'node',
'label' => $vocabulary->name,
'bundle' => 'forum',
'required' => TRUE,
'widget' => array(
'type' => 'options_select',
),
'display' => array(
'default' => array(
'type' => 'taxonomy_term_reference_link',
'weight' => 10,
),
'teaser' => array(
'type' => 'taxonomy_term_reference_link',
'weight' => 10,
),
),
);
field_create_instance($instance);
}
// Ensure the forum node type is available.
node_types_rebuild();
$types = node_type_get_types();
node_add_body_field($types['forum']);
}
/**
* Implements hook_uninstall().
*/
function forum_uninstall() {
// Load the dependent Taxonomy module, in case it has been disabled.
drupal_load('module', 'taxonomy');
variable_del('node_options_forum');
field_delete_field('taxonomy_forums');
// Purge field data now to allow taxonomy module to be uninstalled
// if this is the only field remaining.
field_purge_batch(10);
}
/**
* Implements hook_schema().
*/
function forum_schema() {
$schema['forum'] = array(
'description' => 'Stores the relationship of nodes to forum terms.',
'fields' => array(
'nid' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'The {node}.nid of the node.',
),
'vid' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'Primary Key: The {node}.vid of the node.',
),
'tid' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'The {taxonomy_term_data}.tid of the forum term assigned to the node.',
),
),
'indexes' => array(
'forum_topic' => array('nid', 'tid'),
'tid' => array('tid'),
),
'primary key' => array('vid'),
'foreign keys' => array(
'forum_node' => array(
'table' => 'node',
'columns' => array(
'nid' => 'nid',
'vid' => 'vid',
),
),
),
);
$schema['forum_index'] = array(
'description' => 'Maintains denormalized information about node/term relationships.',
'fields' => array(
'nid' => array(
'description' => 'The {node}.nid this record tracks.',
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
),
'title' => array(
'description' => 'The title of this node, always treated as non-markup plain text.',
'type' => 'varchar',
'length' => 255,
'not null' => TRUE,
'default' => '',
),
'tid' => array(
'description' => 'The term ID.',
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
),
'sticky' => array(
'description' => 'Boolean indicating whether the node is sticky.',
'type' => 'int',
'not null' => FALSE,
'default' => 0,
'size' => 'tiny',
),
'created' => array(
'description' => 'The Unix timestamp when the node was created.',
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default'=> 0,
),
'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.',
),
'comment_count' => array(
'type' => 'int',
'unsigned' => TRUE,
'not null' => TRUE,
'default' => 0,
'description' => 'The total number of comments on this node.',
),
),
'indexes' => array(
'forum_topics' => array('nid', 'tid', 'sticky', 'last_comment_timestamp'),
'created' => array('created'),
'last_comment_timestamp' => array('last_comment_timestamp'),
),
'foreign keys' => array(
'tracked_node' => array(
'table' => 'node',
'columns' => array('nid' => 'nid'),
),
'term' => array(
'table' => 'taxonomy_term_data',
'columns' => array(
'tid' => 'tid',
),
),
),
);
return $schema;
}
/**
* Implements hook_update_last_removed().
*/
function forum_update_last_removed() {
return 7003;
}
/**
* Moves forum settings from variable to config.
*
* @ingroup config_upgrade
*/
function forum_update_8000() {
update_variables_to_config('forum.settings', array(
'forum_hot_topic' => 'topics.hot_threshold',
'forum_per_page' => 'topics.page_limit',
'forum_order' => 'topics.order',
'forum_nav_vocabulary' => 'vocabulary',
'forum_containers' => 'containers',
'forum_block_num_active' => 'block.active.limit',
'forum_block_num_new' => 'block.new.limit',
));
}