Error: .belongsToMany called with something that's not a subclass of Sequelize.Model5 - BugOverflow https://muszak.eu/community/bugoverflow/error-belongstomany-called-with-something-thats-not-a-subclass-of-sequelize-model5/ muszak.eu Forum dyskusyjne pl-PL Sun, 08 Mar 2026 13:09:57 +0000 wpForo 60 RE: Error: .belongsToMany called with something that's not a subclass of Sequelize.Model5 https://muszak.eu/community/bugoverflow/error-belongstomany-called-with-something-thats-not-a-subclass-of-sequelize-model5/#post-271 Tue, 03 Dec 2019 20:43:39 +0000 if you’re using objects instead of string-names the you should replace

Project.belongsToMany('User', {through: 'UserProject'});
User.belongsToMany('Project', {through: 'UserProject'});

with

Project.belongsToMany(this.User, {through: 'UserProject'});
User.belongsToMany(this.Project, {through: 'UserProject'});
]]> BugOverflow mrmucha https://muszak.eu/community/bugoverflow/error-belongstomany-called-with-something-thats-not-a-subclass-of-sequelize-model5/#post-271 Error: .belongsToMany called with something that's not a subclass of Sequelize.Model5 https://muszak.eu/community/bugoverflow/error-belongstomany-called-with-something-thats-not-a-subclass-of-sequelize-model5/#post-270 Tue, 03 Dec 2019 20:41:49 +0000 BugOverflow mrmucha https://muszak.eu/community/bugoverflow/error-belongstomany-called-with-something-thats-not-a-subclass-of-sequelize-model5/#post-270