public function DatabaseSchema_sqlite::dropField
public DatabaseSchema_sqlite::dropField($table, $field)
Drop a field.
Parameters
$table: The table to be altered.
$field: The field to be dropped.
Return value
TRUE if the field was successfully dropped, FALSE if there was no field by that name to begin with.
Overrides DatabaseSchema::dropField
File
- includes/database/sqlite/schema.inc, line 471
- Database schema code for SQLite databases.
Class
Code
public function dropField($table, $field) { if (!$this->fieldExists($table, $field)) { return FALSE; } $old_schema = $this->introspectSchema($table); $new_schema = $old_schema; unset($new_schema['fields'][$field]); foreach ($new_schema['indexes'] as $index => $fields) { foreach ($fields as $key => $field_name) { if ($field_name == $field) { unset($new_schema['indexes'][$index][$key]); } } // If this index has no more fields then remove it. if (empty($new_schema['indexes'][$index])) { unset($new_schema['indexes'][$index]); } } $this->alterTable($table, $old_schema, $new_schema); return TRUE; }
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