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<?php
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/**
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* @file
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* Install, update and uninstall functions for the block_class module.
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*/
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/**
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* Implements hook_install().
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*/
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function block_class_install() {
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$schema['block'] = array();
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block_class_schema_alter($schema);
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foreach ($schema['block']['fields'] as $field => $spec) {
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if (db_field_exists('block', $field)) {
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watchdog('system', 'Module install: Attempt to recreate field: "%field", when it already exists.', array('%field' => $field), WATCHDOG_WARNING);
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}
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else {
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db_add_field('block', $field, $spec);
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}
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}
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}
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/**
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* Implements hook_uninstall().
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*/
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function block_class_uninstall() {
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$schema['block'] = array();
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block_class_schema_alter($schema);
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foreach ($schema['block']['fields'] as $field => $specs) {
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db_drop_field('block', $field);
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}
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}
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/**
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* Implements hook_schema_alter().
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*
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* Other modules, such as i18n_block also modify the block database table.
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*/
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function block_class_schema_alter(&$schema) {
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if (isset($schema['block'])) {
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$schema['block']['fields']['css_class'] = 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' => 'String containing the classes for the block.',
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);
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}
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}
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/**
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* Alters the structure of {block_class} schema.
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*/
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function block_class_update_7100() {
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// Check if the block_class table exists to prevent installation profiles
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// from running this update for versions without the block_class table.
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if (db_table_exists('block_class')) {
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// Update the schema.
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db_drop_primary_key('block_class');
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db_change_field('block_class', 'module', 'module',
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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 module to which the block belongs.',
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)
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);
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db_change_field('block_class', 'delta', 'delta',
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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' => "The ID of the module's block.",
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)
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);
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db_change_field('block_class', 'css_class', 'css_class',
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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' => 'String containing the classes for the block.',
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)
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);
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// Restore the primary key.
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db_add_primary_key('block_class', array('module', 'delta'));
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}
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}
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/**
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* Fix too long primary key length in {block_class}.
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*/
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function block_class_update_7101() {
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// Ensure the block_class table exists, which is not true for all versions.
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if (db_table_exists('block_class')) {
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// Drop current primary key.
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db_drop_primary_key('block_class');
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db_change_field('block_class', 'module', '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 module to which the block belongs.',
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));
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db_change_field('block_class', 'delta', 'delta', 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' => "The ID of the module's block.",
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));
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// Create new primary key.
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db_add_primary_key('block_class', array('module', 'delta'));
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}
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}
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/**
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* Migration from block_class table to new field css_class in core block table.
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*/
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function block_class_update_7103() {
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if (!db_field_exists('block', 'block_class')) {
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$schema['block'] = array();
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block_class_schema_alter($schema);
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foreach ($schema['block']['fields'] as $field => $specs) {
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db_add_field('block', $field, $specs);
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}
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}
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if (db_table_exists('block_class')) {
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// Migrate all existing records from block_class table to block table.
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$result = db_query('SELECT css_class, module, delta FROM {block_class}');
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while ($record = $result->fetchObject()) {
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db_update('block')
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->fields(array('css_class' => $record->css_class))
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->condition('module', $record->module)
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->condition('delta', $record->delta)
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->execute();
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}
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// Remove the block_class table.
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db_drop_table('block_class');
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}
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}
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