The getter 'cookieJar' isn't defined for the type 'Dio'.

[PascalMalz]

Package

dio

Version

^5.3.2

Output of flutter doctor -v

PS C:\Users\pam\self_code> flutter doctor -v
[!] Flutter (Channel stable, 3.13.0, on Microsoft Windows [Version 10.0.22621.2134], locale en-US)
    • Flutter version 3.13.0 on channel stable at C:\src\flutter
    ! Warning: `flutter` on your path resolves to C:\Users\pam\self_code\flutter, which is not inside your current Flutter SDK checkout at
      C:\src\flutter. Consider adding C:\src\flutter\bin to the front of your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision efbf63d9c6 (2 days ago), 2023-08-15 21:05:06 -0500
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    • Dart version 3.1.0
    • DevTools version 2.25.0
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and     
      upgrades.

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[√] Connected device (4 available)
    • SM G991B (mobile) • R3CRB0NP1WJ • android-arm64  • Android 11 (API 30)
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[√] Network resources
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! Doctor found issues in 1 category.

Dart Version

3.1.0

Steps to Reproduce

This code throws an error "The getter 'cookieJar' isn't defined for the type 'Dio'.":

import 'dart:io';
import 'package:dio/dio.dart';
import 'package:dio_cookie_manager/dio_cookie_manager.dart';
import 'package:cookie_jar/cookie_jar.dart';
import 'package:http_parser/http_parser.dart';
import '../models/AudioFile.dart';

class MusicApi {
  final String baseUrl = 'ip';
  final String apiUrl = 'ip/.../.../';
  late final Dio _dio;

  MusicApi() {
    final cookieJar = CookieJar();
    _dio = Dio();
    _dio.interceptors.add(CookieManager(cookieJar));
  }
  Future<void> deleteMusic(String musicId, String fileName,
      {required void Function() onSuccess, required void Function(String) onError}) async {
    final cookieJar = CookieJar();
    _dio = Dio();
    _dio.interceptors.add(CookieManager(cookieJar));
    try {
      final csrfCookie = _dio.cookieJar.loadForRequest(Uri.parse(baseUrl)).firstWhere(
            (cookie) => cookie.name == 'csrftoken',
        orElse: () => null,
      );

      if (csrfCookie == null) {
        onError('CSRF token not found');
        return;
      }

      final csrfToken = csrfCookie.value;

      // Delete record from the database
      final deleteResponse = await _dio.delete(
        '$baseUrl/$musicId',
        options: Options(
          headers: {
            'X-CSRFToken': csrfToken,
          },
        ),
      );

      if (deleteResponse.statusCode == 200) {
        // Delete associated file
        final file = File(fileName);
        if (await file.exists()) {
          await file.delete();
        }

        onSuccess();
      } else {
        onError('Error deleting music: ${deleteResponse.statusMessage}');
      }
    } catch (e) {
      onError('Error deleting music: $e');
    }
  }
}

Expected Result

No error

Actual Result

The getter 'cookieJar' isn't defined for the type 'Dio'.

[kuhnroyal]

What makes you think this would work?

[PascalMalz]

It was not meant to work as is, it was just a code snippet. I just wanted to get rid of the error, I mentioned. I updated the code to show you how I want to use it. Can you tell me why it does not work this way? Or what I have to do to make it work?
This line is throwing the error: final csrfCookie = _dio.cookieJar.loadForRequest(Uri.parse(baseUrl)).firstWhere(

[kuhnroyal]

Well there is just no getter or field named cookieJar so this will not work. You created your CookieJar instance 4 lines above, you can use that one.

Or you can create an extension yourself if you require that field to be there.

[AlexV525]

Use your declared cookieJar rather than _dio.cookieJar since Dio has no any instance getter with .cookieJar. I'm not sure what makes you think it has but you'll need to understand the instance relationships first.

Closing as won't fix.