{"record":{"id":"47baab0ed6225bf2","repo":"laravel/framework","slug":"this-database-driver-does-not-support-dropping-for-47baab","errorCode":null,"errorMessage":"This database driver does not support dropping foreign keys by name.","messagePattern":"This database driver does not support dropping foreign keys by name\\.","errorType":"exception","errorClass":"RuntimeException","httpStatus":null,"severity":"error","filePath":"src/Illuminate/Database/Schema/Grammars/SQLiteGrammar.php","lineNumber":607,"sourceCode":"     */\n    public function compileDropSpatialIndex(Blueprint $blueprint, Fluent $command)\n    {\n        throw new RuntimeException('The database driver in use does not support spatial indexes.');\n    }\n\n    /**\n     * Compile a drop foreign key command.\n     *\n     * @param  \\Illuminate\\Database\\Schema\\Blueprint  $blueprint\n     * @param  \\Illuminate\\Support\\Fluent  $command\n     * @return array\n     *\n     * @throws \\RuntimeException\n     */\n    public function compileDropForeign(Blueprint $blueprint, Fluent $command)\n    {\n        if (empty($command->columns)) {\n            throw new RuntimeException('This database driver does not support dropping foreign keys by name.');\n        }\n\n        // Handled on table alteration...\n    }\n\n    /**\n     * Compile a rename table command.\n     *\n     * @param  \\Illuminate\\Database\\Schema\\Blueprint  $blueprint\n     * @param  \\Illuminate\\Support\\Fluent  $command\n     * @return string\n     */\n    public function compileRename(Blueprint $blueprint, Fluent $command)\n    {\n        $from = $this->wrapTable($blueprint);\n\n        return \"alter table {$from} rename to \".$this->wrapTable($command->to);\n    }","sourceCodeStart":589,"sourceCodeEnd":625,"githubUrl":"https://github.com/laravel/framework/blob/e0f6eb3518ac29fbbca8529e97d0df7fc9f24481/src/Illuminate/Database/Schema/Grammars/SQLiteGrammar.php#L589-L625","documentation":"SQLiteGrammar::compileDropForeign throws when $command->columns is empty because SQLite tracks foreign keys only by the column(s) they sit on, not by an internally named constraint. Blueprint->dropForeign(['name']) on SQLite has no way to map the name to a constraint, so the framework requires you to drop by column name instead.","triggerScenarios":"Calling $table->dropForeign('some_foreign_key_name') (a string name, which the blueprint maps to an empty columns array) on a SQLite connection.","commonSituations":"Writing portable migrations that drop foreign keys by constraint name (the Postgres/MySQL idiom) and running them on SQLite in tests; down migrations that call dropForeign with the original index name.","solutions":["Drop the foreign key by its column name(s) on SQLite: $table->dropForeign(['user_id']).","Branch the drop by driver: pass a name on Postgres/MySQL and a columns array on SQLite.","If you must support both, write the migration to inspect getDriverName() and call dropForeign with the appropriate argument shape."],"exampleFix":"// before\n$table->dropForeign('orders_user_id_foreign');\n\n// after (portable)\nuse Illuminate\\Support\\Facades\\DB;\n\nif (DB::connection()->getDriverName() === 'sqlite') {\n    $table->dropForeign(['user_id']);\n} else {\n    $table->dropForeign('orders_user_id_foreign');\n}","handlingStrategy":"validation","validationCode":"use Illuminate\\Support\\Facades\\DB;\n\nif (DB::connection()->getDriverName() === 'sqlite') {\n    $table->dropForeign(['user_id']); // columns\n} else {\n    $table->dropForeign('orders_user_id_foreign'); // named constraint\n}","typeGuard":"function dropForeignArgsForDriver(string $driver, string|array $byName, array $byColumns): string|array {\n    return $driver === 'sqlite' ? $byColumns : $byName;\n}","tryCatchPattern":null,"preventionTips":["On SQLite, always pass the column name(s) to dropForeign, never the constraint name.","Branch foreign-key drops by driver in shared migrations.","Document the SQLite restriction in the migration header comment."],"tags":["database","schema","migrations","sqlite","foreign-keys","driver-unsupported"],"backgroundTag":null,"analyzedSha":"e0f6eb3518ac29fbbca8529e97d0df7fc9f24481","analyzedAt":"2026-08-11T20:52:37.562Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}