public function Schema::dropField in Drupal 9
Same name in this branch
- 9 core/lib/Drupal/Core/Database/Schema.php \Drupal\Core\Database\Schema::dropField()
- 9 core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::dropField()
- 9 core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php \Drupal\Core\Database\Driver\pgsql\Schema::dropField()
- 9 core/lib/Drupal/Core/Database/Driver/mysql/Schema.php \Drupal\Core\Database\Driver\mysql\Schema::dropField()
- 9 core/tests/fixtures/database_drivers/module/corefake/src/Driver/Database/corefakeWithAllCustomClasses/Schema.php \Drupal\corefake\Driver\Database\corefakeWithAllCustomClasses\Schema::dropField()
Same name and namespace in other branches
- 8 core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php \Drupal\Core\Database\Driver\sqlite\Schema::dropField()
Drop a field.
Parameters
$table: The table to be altered.
$field: The field to be dropped.
Return value
TRUE if the field was successfully dropped, FALSE if there was no field by that name to begin with.
Overrides Schema::dropField
File
- core/
lib/ Drupal/ Core/ Database/ Driver/ sqlite/ Schema.php, line 553
Class
- Schema
- SQLite implementation of \Drupal\Core\Database\Schema.
Namespace
Drupal\Core\Database\Driver\sqliteCode
public function dropField($table, $field) {
if (!$this
->fieldExists($table, $field)) {
return FALSE;
}
$old_schema = $this
->introspectSchema($table);
$new_schema = $old_schema;
unset($new_schema['fields'][$field]);
// Drop the primary key if the field to drop is part of it. This is
// consistent with the behavior on PostgreSQL.
// @see \Drupal\Core\Database\Driver\mysql\Schema::dropField()
if (isset($new_schema['primary key']) && in_array($field, $new_schema['primary key'], TRUE)) {
unset($new_schema['primary key']);
}
// Handle possible index changes.
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;
}