294 lines
8.7 KiB
Plaintext
294 lines
8.7 KiB
Plaintext
<?php
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// $Id$
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/**
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* @file
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* Install, update and uninstall functions for the field module.
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*/
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/**
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* Implements hook_schema().
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*/
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function field_schema() {
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// Static (meta) tables.
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$schema['field_config'] = array(
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'fields' => array(
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'id' => array(
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'type' => 'serial',
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'not null' => TRUE,
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'description' => 'The primary identifier for a field',
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),
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'field_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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'description' => 'The name of this field. Non-deleted field names are unique, but multiple deleted fields can have the same name.',
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),
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'type' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'description' => 'The type of this field.',
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),
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'module' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'default' => '',
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'description' => 'The module that implements the field type.',
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),
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'active' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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'description' => 'Boolean indicating whether the module that implements the field type is enabled.',
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),
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'storage_type' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'description' => 'The storage backend for the field.',
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),
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'storage_module' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'default' => '',
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'description' => 'The module that implements the storage backend.',
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),
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'storage_active' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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'description' => 'Boolean indicating whether the module that implements the storage backend is enabled.',
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),
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'locked' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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'description' => '@TODO',
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),
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'data' => array(
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'type' => 'blob',
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'size' => 'big',
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'not null' => TRUE,
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'serialize' => TRUE,
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'description' => 'Serialized data containing the field properties that do not warrant a dedicated column.',
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),
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'cardinality' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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),
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'translatable' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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),
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'deleted' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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),
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),
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'primary key' => array('id'),
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'indexes' => array(
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'field_name' => array('field_name'),
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// Used by field_read_fields().
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'active' => array('active'),
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'storage_active' => array('storage_active'),
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'deleted' => array('deleted'),
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// Used by field_modules_disabled().
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'module' => array('module'),
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'storage_module' => array('storage_module'),
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// Used by field_associate_fields().
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'type' => array('type'),
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'storage_type' => array('storage_type'),
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),
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);
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$schema['field_config_instance'] = array(
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'fields' => array(
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'id' => array(
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'type' => 'serial',
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'not null' => TRUE,
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'description' => 'The primary identifier for a field instance',
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),
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'field_id' => array(
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'type' => 'int',
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'not null' => TRUE,
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'description' => 'The identifier of the field attached by this instance',
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),
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'field_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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),
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'entity_type' => 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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),
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'bundle' => array(
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'type' => 'varchar',
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'length' => 128,
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'not null' => TRUE,
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'default' => ''
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),
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'data' => array(
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'type' => 'blob',
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'size' => 'big',
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'not null' => TRUE,
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'serialize' => TRUE,
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),
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'deleted' => array(
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'type' => 'int',
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'size' => 'tiny',
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'not null' => TRUE,
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'default' => 0,
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),
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),
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'primary key' => array('id'),
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'indexes' => array(
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// Used by field_delete_instance().
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'field_name_bundle' => array('field_name', 'entity_type', 'bundle'),
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// Used by field_read_instances().
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'deleted' => array('deleted'),
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),
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);
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$schema['cache_field'] = drupal_get_schema_unprocessed('system', 'cache');
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return $schema;
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}
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/**
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* Utility function: create a field by writing directly to the database.
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*
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* This function is valid for a database schema version 7000.
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*
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* @ingroup update-api-6.x-to-7.x
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*/
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function _update_7000_field_create_field(&$field) {
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// Merge in default values.`
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$field += array(
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'entity_types' => array(),
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'cardinality' => 1,
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'translatable' => FALSE,
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'locked' => FALSE,
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'settings' => array(),
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'indexes' => array(),
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'deleted' => 0,
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'active' => 1,
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);
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// Set storage.
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$field['storage'] = array(
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'type' => 'field_sql_storage',
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'settings' => array(),
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'module' => 'field_sql_storage',
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'active' => 1,
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);
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// The serialized 'data' column contains everything from $field that does not
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// have its own column and is not automatically populated when the field is
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// read.
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$data = $field;
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unset($data['columns'], $data['field_name'], $data['type'], $data['active'], $data['module'], $data['storage_type'], $data['storage_active'], $data['storage_module'], $data['locked'], $data['cardinality'], $data['deleted']);
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// Additionally, do not save the 'bundles' property populated by
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// field_info_field().
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unset($data['bundles']);
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// Write the field to the database.
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$record = array(
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'field_name' => $field['field_name'],
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'type' => $field['type'],
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'module' => $field['module'],
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'active' => (int) $field['active'],
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'storage_type' => $field['storage']['type'],
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'storage_module' => $field['storage']['module'],
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'storage_active' => (int) $field['storage']['active'],
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'locked' => (int) $field['locked'],
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'data' => serialize($data),
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'cardinality' => $field['cardinality'],
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'translatable' => (int) $field['translatable'],
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'deleted' => (int) $field['deleted'],
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);
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// We don't use drupal_write_record() here because it depends on the schema.
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$field['id'] = db_insert('field_config')
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->fields($record)
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->execute();
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// Create storage for this field, the field module is not guaranteed to be
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// loaded at this point.
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module_load_install($field['module']);
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$schema = (array) module_invoke($field['module'], 'field_schema', $field);
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$schema += array('columns' => array(), 'indexes' => array());
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// 'columns' are hardcoded in the field type.
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$field['columns'] = $schema['columns'];
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// 'indexes' can be both hardcoded in the field type, and specified in the
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// incoming $field definition.
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$field['indexes'] += $schema['indexes'];
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field_sql_storage_field_storage_create_field($field);
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}
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/**
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* Utility function: create a field instance directly to the database.
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*
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* This function is valid for a database schema version 7000.
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*
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* @ingroup update-api-6.x-to-7.x
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*/
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function _update_7000_field_create_instance($field, &$instance) {
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// Merge in defaults.
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$instance += array(
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'field_id' => $field['id'],
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'field_name' => $field['field_name'],
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'deleted' => 0,
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);
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// The serialized 'data' column contains everything from $instance that does
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// not have its own column and is not automatically populated when the
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// instance is read.
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$data = $instance;
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unset($data['id'], $data['field_id'], $data['field_name'], $data['entity_type'], $data['bundle'], $data['deleted']);
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$record = array(
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'field_id' => $instance['field_id'],
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'field_name' => $instance['field_name'],
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'entity_type' => $instance['entity_type'],
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'bundle' => $instance['bundle'],
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'data' => serialize($data),
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'deleted' => (int) $instance['deleted'],
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);
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$instance['id'] = db_insert('field_config_instance')
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->fields($record)
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->execute();
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}
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/**
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* @defgroup field-updates-6.x-to-7.x Field updates from 6.x to 7.x
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* @{
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*/
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/**
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* Field update version placeholder.
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*/
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function field_update_7000() {
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// _update_7000_field_create_field() is supposed to create fields according
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// to the structure of fields after running field_update_7000(). So this
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// function needs to exist but as field is a new module in Drupal 7, it
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// does not need to do anything.
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}
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/**
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* @} End of "defgroup field-updates-6.x-to-7.x"
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*/
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