50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
<?php
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/**
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* @file
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* Install, update and uninstall functions for the Entity Reference
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* module.
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*/
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/**
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* Implements hook_field_schema().
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*/
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function entity_reference_field_schema($field) {
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$schema = array(
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'columns' => array(
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'target_id' => array(
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'description' => 'The ID of the target entity.',
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => TRUE,
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),
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'revision_id' => array(
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'description' => 'The revision ID of the target entity.',
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'type' => 'int',
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'unsigned' => TRUE,
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'not null' => FALSE,
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),
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),
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'indexes' => array(
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'target_id' => array('target_id'),
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),
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'foreign keys' => array(),
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);
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// Create a foreign key to the target entity type base type.
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// @todo It's still not safe to call entity_get_info() in here.
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// see http://drupal.org/node/1847582
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// $entity_type = $field['settings']['target_type'];
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// $entity_info = entity_get_info($entity_type);
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//
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// $base_table = $entity_info['base_table'];
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// $id_column = $entity_info['entity_keys']['id'];
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//
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// $schema['foreign keys'][$base_table] = array(
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// 'table' => $base_table,
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// 'columns' => array('target_id' => $id_column),
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// );
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return $schema;
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}
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