i'm using old code and i want to know how to update mixins in it












0















i'm using a code of my friend and struggle with the issue that the dart language updated and the mixins syntax is changed...



Main Model class



class MainModel extends Model with UserModel, ProductsModel {}


this syntax is changed and i don't know how to fix it...
the error is on UserModel and ProductsModel says:




[dart] The class 'UserModel' can't be used as a mixin because it extends a class other than Object. [mixin_inherits_from_not_object]




and this is UserModel Code:



import 'package:scoped_model/scoped_model.dart';

import '../model/user.dart';

class UserModel extends Model {
User _authenticatedUser;

void login(String email, String password) {
_authenticatedUser =
User(id: 'assddssa', email: email, password: password);
}
}


anyone can help please...
i'm a beginner in both Flutter and Dart so excuse me for that...










share|improve this question




















  • 1





    Maybe show us your UserModel

    – Rémi Rousselet
    Jan 20 at 15:21











  • @RémiRousselet i've added the UserModel class code

    – mohamed momo
    Jan 20 at 16:54











  • That's not helpful when UserModel again extends a class which code you didn't post.

    – Günter Zöchbauer
    Jan 20 at 17:28











  • So what exactly i have to do now ?

    – mohamed momo
    Jan 20 at 22:03
















0















i'm using a code of my friend and struggle with the issue that the dart language updated and the mixins syntax is changed...



Main Model class



class MainModel extends Model with UserModel, ProductsModel {}


this syntax is changed and i don't know how to fix it...
the error is on UserModel and ProductsModel says:




[dart] The class 'UserModel' can't be used as a mixin because it extends a class other than Object. [mixin_inherits_from_not_object]




and this is UserModel Code:



import 'package:scoped_model/scoped_model.dart';

import '../model/user.dart';

class UserModel extends Model {
User _authenticatedUser;

void login(String email, String password) {
_authenticatedUser =
User(id: 'assddssa', email: email, password: password);
}
}


anyone can help please...
i'm a beginner in both Flutter and Dart so excuse me for that...










share|improve this question




















  • 1





    Maybe show us your UserModel

    – Rémi Rousselet
    Jan 20 at 15:21











  • @RémiRousselet i've added the UserModel class code

    – mohamed momo
    Jan 20 at 16:54











  • That's not helpful when UserModel again extends a class which code you didn't post.

    – Günter Zöchbauer
    Jan 20 at 17:28











  • So what exactly i have to do now ?

    – mohamed momo
    Jan 20 at 22:03














0












0








0








i'm using a code of my friend and struggle with the issue that the dart language updated and the mixins syntax is changed...



Main Model class



class MainModel extends Model with UserModel, ProductsModel {}


this syntax is changed and i don't know how to fix it...
the error is on UserModel and ProductsModel says:




[dart] The class 'UserModel' can't be used as a mixin because it extends a class other than Object. [mixin_inherits_from_not_object]




and this is UserModel Code:



import 'package:scoped_model/scoped_model.dart';

import '../model/user.dart';

class UserModel extends Model {
User _authenticatedUser;

void login(String email, String password) {
_authenticatedUser =
User(id: 'assddssa', email: email, password: password);
}
}


anyone can help please...
i'm a beginner in both Flutter and Dart so excuse me for that...










share|improve this question
















i'm using a code of my friend and struggle with the issue that the dart language updated and the mixins syntax is changed...



Main Model class



class MainModel extends Model with UserModel, ProductsModel {}


this syntax is changed and i don't know how to fix it...
the error is on UserModel and ProductsModel says:




[dart] The class 'UserModel' can't be used as a mixin because it extends a class other than Object. [mixin_inherits_from_not_object]




and this is UserModel Code:



import 'package:scoped_model/scoped_model.dart';

import '../model/user.dart';

class UserModel extends Model {
User _authenticatedUser;

void login(String email, String password) {
_authenticatedUser =
User(id: 'assddssa', email: email, password: password);
}
}


anyone can help please...
i'm a beginner in both Flutter and Dart so excuse me for that...







dart flutter mixins






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 20 at 16:53







mohamed momo

















asked Jan 20 at 15:04









mohamed momomohamed momo

85




85








  • 1





    Maybe show us your UserModel

    – Rémi Rousselet
    Jan 20 at 15:21











  • @RémiRousselet i've added the UserModel class code

    – mohamed momo
    Jan 20 at 16:54











  • That's not helpful when UserModel again extends a class which code you didn't post.

    – Günter Zöchbauer
    Jan 20 at 17:28











  • So what exactly i have to do now ?

    – mohamed momo
    Jan 20 at 22:03














  • 1





    Maybe show us your UserModel

    – Rémi Rousselet
    Jan 20 at 15:21











  • @RémiRousselet i've added the UserModel class code

    – mohamed momo
    Jan 20 at 16:54











  • That's not helpful when UserModel again extends a class which code you didn't post.

    – Günter Zöchbauer
    Jan 20 at 17:28











  • So what exactly i have to do now ?

    – mohamed momo
    Jan 20 at 22:03








1




1





Maybe show us your UserModel

– Rémi Rousselet
Jan 20 at 15:21





Maybe show us your UserModel

– Rémi Rousselet
Jan 20 at 15:21













@RémiRousselet i've added the UserModel class code

– mohamed momo
Jan 20 at 16:54





@RémiRousselet i've added the UserModel class code

– mohamed momo
Jan 20 at 16:54













That's not helpful when UserModel again extends a class which code you didn't post.

– Günter Zöchbauer
Jan 20 at 17:28





That's not helpful when UserModel again extends a class which code you didn't post.

– Günter Zöchbauer
Jan 20 at 17:28













So what exactly i have to do now ?

– mohamed momo
Jan 20 at 22:03





So what exactly i have to do now ?

– mohamed momo
Jan 20 at 22:03












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