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<?php
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// $Id: filter.install,v 1.22 2009/10/13 15:39:41 dries Exp $
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/**
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* @file
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* Install, update and uninstall functions for the filter module.
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*/
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/**
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* Implement hook_schema().
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*/
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function filter_schema() {
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$schema['filter'] = array(
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'description' => 'Table that maps filters (HTML corrector) to text formats (Filtered HTML).',
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'fields' => array(
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'format' => 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' => 'Foreign key: The {filter_format}.format to which this filter is assigned.',
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),
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'module' => array(
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'type' => 'varchar',
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'length' => 64,
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'not null' => TRUE,
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'default' => '',
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'description' => 'The origin module of the filter.',
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),
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'name' => array(
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'type' => 'varchar',
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'length' => 32,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Name of the filter being referenced.',
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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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'size' => 'tiny',
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'description' => 'Weight of filter within format.',
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),
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'status' => 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' => 'Filter enabled status. (1 = enabled, 0 = disabled)',
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),
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'settings' => array(
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'type' => 'text',
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'not null' => FALSE,
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'size' => 'big',
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'serialize' => TRUE,
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'description' => 'A serialized array of name value pairs that store the filter settings for the specific format.',
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),
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),
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'primary key' => array('format', 'name'),
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'unique keys' => array(
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'fmn' => array('format', 'module', 'name'),
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),
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'indexes' => array(
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'list' => array('format', 'weight', 'module', 'name'),
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),
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);
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$schema['filter_format'] = array(
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'description' => 'Stores text formats: custom groupings of filters, such as Filtered HTML.',
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'fields' => array(
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'format' => array(
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'type' => 'serial',
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'not null' => TRUE,
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'description' => 'Primary Key: Unique ID for format.',
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),
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'name' => array(
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'type' => 'varchar',
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'length' => 255,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Name of the text format (Filtered HTML).',
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'translatable' => TRUE,
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),
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'cache' => array(
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'type' => 'int',
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'not null' => TRUE,
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'default' => 0,
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'size' => 'tiny',
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'description' => 'Flag to indicate whether format is cacheable. (1 = cacheable, 0 = not cacheable)',
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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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'size' => 'tiny',
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'description' => 'Weight of text format to use when listing.',
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)
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),
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'primary key' => array('format'),
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'unique keys' => array(
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'name' => array('name'),
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),
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);
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$schema['cache_filter'] = drupal_get_schema_unprocessed('system', 'cache');
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$schema['cache_filter']['description'] = 'Cache table for the Filter module to store already filtered pieces of text, identified by text format and md5 hash of the text.';
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return $schema;
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}
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/**
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* @defgroup updates-6.x-to-7.x Filter updates from 6.x to 7.x
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* @{
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*/
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/**
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* Add a weight column to the filter formats table.
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*/
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function filter_update_7000() {
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db_add_field('filter_formats', 'weight', array('type' => 'int', 'not null' => TRUE, 'default' => 0, 'size' => 'tiny'));
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}
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/**
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* Break out "escape HTML filter" option to its own filter.
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*/
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function filter_update_7001() {
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$result = db_query("SELECT format FROM {filter_formats}")->fetchCol();
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$insert = db_insert('filters')->fields(array('format', 'module', 'delta', 'weight'));
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foreach ($result as $format_id) {
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// Deprecated constants FILTER_HTML_STRIP = 1 and FILTER_HTML_ESCAPE = 2.
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if (variable_get('filter_html_' . $format_id, 1) == 2) {
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$insert->values(array(
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'format' => $format_id,
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'filter' => 'filter',
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'delta' => 4,
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'weight' => 0,
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));
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}
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variable_del('filter_html_' . $format_id);
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}
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$insert->execute();
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}
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/**
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* Rename {filters} table to {filter} and {filter_formats} table to {filter_format}.
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*/
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function filter_update_7002() {
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db_rename_table('filters', 'filter');
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db_rename_table('filter_formats', 'filter_format');
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}
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/**
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* Remove hardcoded numeric deltas from all filters in core.
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*/
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function filter_update_7003() {
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// Get an array of the renamed filter deltas, organized by module.
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$renamed_deltas = array(
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'filter' => array(
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'0' => 'filter_html',
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'1' => 'filter_autop',
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'2' => 'filter_url',
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'3' => 'filter_htmlcorrector',
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'4' => 'filter_html_escape',
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),
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'php' => array(
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'0' => 'php_code',
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),
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);
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// Rename field 'delta' to 'name'.
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db_drop_unique_key('filter', 'fmd');
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db_drop_index('filter', 'list');
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db_change_field('filter', 'delta', 'name',
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array(
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'type' => 'varchar',
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'length' => 32,
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'not null' => TRUE,
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'default' => '',
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'description' => 'Name of the filter being referenced.',
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),
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array(
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'unique keys' => array(
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'fmn' => array('format', 'module', 'name'),
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),
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'indexes' => array(
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'list' => array('format', 'weight', 'module', 'name'),
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),
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)
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);
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// Loop through each filter and make changes to the core filter table.
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foreach ($renamed_deltas as $module => $deltas) {
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foreach ($deltas as $old_delta => $new_delta) {
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db_update('filter')
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->fields(array('name', $new_delta))
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->condition('module', $module)
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->condition('name', $old_delta)
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->execute();
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}
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}
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}
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/**
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* Move filter settings storage into {filter} table.
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*
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* - Remove {filter}.fid.
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* - Add (format, name) as primary key for {filter}.
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* - Add {filter}.status.
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* - Add {filter}.settings.
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*/
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function filter_update_7004() {
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db_drop_field('filter', 'fid');
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db_add_primary_key('filter', array('format', 'name'));
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db_add_field('filter', 'status',
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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' => 'Filter enabled status. (1 = enabled, 0 = disabled)',
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)
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);
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db_add_field('filter', 'settings',
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array(
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'type' => 'text',
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'not null' => FALSE,
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'size' => 'big',
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'serialize' => TRUE,
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'description' => 'A serialized array of name value pairs that store the filter settings for the specific format.',
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)
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);
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// Enable all existing filters ({filter} contained only enabled previously).
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db_update('filter')
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->fields('status', '1')
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->execute();
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// Move filter settings from system variables into {filter}.settings.
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$filters = db_query("SELECT * FROM {filter} WHERE module = :name", array(':name' => 'filter'));
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foreach ($filters as $filter) {
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$settings = array();
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if ($filter->name == 'filter_html') {
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if ($setting = variable_get("allowed_html_{$filter->format}", NULL)) {
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$settings['allowed_html'] = $setting;
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variable_del("allowed_html_{$filter->format}");
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}
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if ($setting = variable_get("filter_html_help_{$filter->format}", NULL)) {
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$settings['filter_html_help'] = $setting;
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variable_del("filter_html_help_{$filter->format}");
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}
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if ($setting = variable_get("filter_html_nofollow_{$filter->format}", NULL)) {
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$settings['filter_html_nofollow'] = $setting;
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variable_del("filter_html_nofollow_{$filter->format}");
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}
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}
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elseif ($filter->name == 'filter_url') {
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if ($setting = variable_get("filter_url_length_{$filter->format}", NULL)) {
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$settings['filter_url_length'] = $setting;
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variable_del("filter_url_length_{$filter->format}");
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}
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}
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if (!empty($settings)) {
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db_upddate('filter')
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->fields(array('settings' => serialize($settings)))
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->condition('format', $filter->format)
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->condition('name', $filter->name)
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->execute();
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}
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}
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}
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/**
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* Integrate text formats with the user permissions system.
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*
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* This function converts text format role assignments to use the new text
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* format permissions introduced in Drupal 7, creates a fallback (plain text)
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* format that is available to all users, and explicitly sets the text format
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* in cases that used to rely on a single site-wide default.
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*/
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function filter_update_7005() {
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// Move role data from the filter system to the user permission system.
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$all_roles = array_keys(user_roles());
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$default_format = variable_get('filter_default_format', 1);
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$result = db_query("SELECT * FROM {filter_format}");
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foreach ($result as $format) {
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// We need to assign the default format to all roles (regardless of what
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// was stored in the database) to preserve the behavior of the site at the
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// moment of the upgrade.
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$format_roles = ($format->format == $default_format ? $all_roles : explode(',', $format->roles));
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foreach ($format_roles as $format_role) {
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if (in_array($format_role, $all_roles)) {
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user_role_grant_permissions($format_role, array(filter_permission_name($format)));
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}
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}
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}
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// Drop the roles field from the {filter_format} table.
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db_drop_field('filter_format', 'roles');
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// Add a fallback text format which outputs plain text and appears last on
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// the list for all users. Generate a unique name for it, starting with
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// "Plain text".
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$start_name = 'Plain text';
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$format_name = $start_name;
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while ($format = db_query('SELECT format FROM {filter_format} WHERE name = :name', array(':name' => $format_name))->fetchField()) {
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$id = empty($id) ? 1 : $id + 1;
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$format_name = $start_name . ' ' . $id;
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}
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$fallback_format = new stdClass();
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$fallback_format->name = $format_name;
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$fallback_format->cache = 1;
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$fallback_format->weight = 1;
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// This format should output plain text, so we escape all HTML and apply the
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// line break filter only.
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$fallback_format->filters = array(
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'filter_html_escape' => array('status' => 1),
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'filter_autop' => array('status' => 1),
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);
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filter_format_save($fallback_format);
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variable_set('filter_fallback_format', $fallback_format->format);
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drupal_set_message('A new <em>Plain text</em> format has been created which will be available to all users. You can configure this text format on the <a href="' . url('admin/config/content/formats/' . $fallback_format->format) . '">text format configuration page</a>.');
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// Move the former site-wide default text format to the top of the list, so
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// that it continues to be the default text format for all users.
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db_update('filter_format')
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->fields(array('weight' => -1))
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->condition('format', $default_format)
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->execute();
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// It was previously possible for a value of "0" to be stored in database
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// tables to indicate that a particular piece of text should be filtered
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// using the default text format. Therefore, we have to convert all such
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// instances (in Drupal core) to explicitly use the appropriate format.
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// Note that the update of the node body field is handled separately, in
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// node_update_7006().
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foreach (array('block_custom', 'comment') as $table) {
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if (db_table_exists($table)) {
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db_update($table)
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->fields(array('format' => $default_format))
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->condition('format', 0)
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->execute();
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}
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}
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// We do not delete the 'filter_default_format' variable, since other modules
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// may need it in their update functions.
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// @todo This variable can be deleted in Drupal 8.
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}
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/**
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* @} End of "defgroup updates-6.x-to-7.x"
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* The next series of updates should start at 8000.
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*/
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