onRequest method
The callback will be executed before the request is initiated.
If you want to continue the request, call handler.next
.
If you want to complete the request with some custom data,
you can resolve a Response
object with handler.resolve
.
If you want to complete the request with an error message,
you can reject a DioError
object with handler.reject
.
Implementation
@override
Future<void> onRequest(RequestOptions options, RequestInterceptorHandler handler) async {
final token = getToken();
if (null != token) {
options.headers[authHeaderName] = token;
}
handler.next(options);
}