transformRequest method
transformRequest
allows changes to the request data before it is
sent to the server, but after the RequestInterceptor
.
This is only applicable for request methods 'PUT', 'POST', and 'PATCH'
Implementation
@override
Future<String> transformRequest(RequestOptions options) async {
var data = options.data ?? '';
if (data is! String) {
if (Transformer.isJsonMimeType(options.contentType)) {
return json.encode(options.data);
} else if (data is Map) {
options.contentType =
options.contentType ?? Headers.formUrlEncodedContentType;
return Transformer.urlEncodeMap(data);
}
}
return data.toString();
}