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

Class

DatabaseSchema_sqlite

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;
}

---