diff options
Diffstat (limited to 'modules/field/field.crud.inc')
| -rw-r--r-- | modules/field/field.crud.inc | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/modules/field/field.crud.inc b/modules/field/field.crud.inc index dc5a08dfe..ed4452c46 100644 --- a/modules/field/field.crud.inc +++ b/modules/field/field.crud.inc @@ -79,6 +79,11 @@ * 'columns' setting are allowed. Note that field types can specify * default indexes, which can be modified or added to when * creating a field. + * - foreign keys: (optional) An associative array of relations, using the same + * structure as the 'foreign keys' definition of hook_schema(). Note, however, + * that the field data is not necessarily stored in SQL. Also, the possible + * usage is limited, as you cannot specify another field as related, only + * existing SQL tables, such as filter formats. * - settings (array) * A sub-array of key/value pairs of field-type-specific settings. Each * field type module defines and documents its own field settings. @@ -319,9 +324,11 @@ function field_create_field($field) { // Collect storage information. module_load_install($field['module']); $schema = (array) module_invoke($field['module'], 'field_schema', $field); - $schema += array('columns' => array(), 'indexes' => array()); + $schema += array('columns' => array(), 'indexes' => array(), 'foreign keys' => array()); // 'columns' are hardcoded in the field type. $field['columns'] = $schema['columns']; + // 'foreign keys' are hardcoded in the field type. + $field['foreign keys'] = $schema['foreign keys']; // 'indexes' can be both hardcoded in the field type, and specified in the // incoming $field definition. $field += array( |