UserGroup.ts
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import {
DataTypes,
HasMany,
HasManyAddAssociationMixin,
HasManyAddAssociationsMixin,
HasManyCountAssociationsMixin,
HasManyCreateAssociationMixin,
HasManyGetAssociationsMixin,
HasManyHasAssociationMixin,
HasManyRemoveAssociationMixin,
HasManyRemoveAssociationsMixin,
HasManySetAssociationsMixin,
Model,
} from 'sequelize';
import { sequelize } from '../connection';
// This class doesn't extend the generic Model<TAttributes>, but should still
// function just fine, with a bit less safe type-checking
export class UserGroup extends Model {
public static associations: {
users: HasMany<UserGroup, User>
};
public id!: number;
public name!: string;
// mixins for association (optional)
public users!: User[];
public getUsers!: HasManyGetAssociationsMixin<User>;
public setUsers!: HasManySetAssociationsMixin<User, number>;
public addUser!: HasManyAddAssociationMixin<User, number>;
public addUsers!: HasManyAddAssociationsMixin<User, number>;
public createUser!: HasManyCreateAssociationMixin<number>;
public countUsers!: HasManyCountAssociationsMixin;
public hasUser!: HasManyHasAssociationMixin<User, number>;
public removeUser!: HasManyRemoveAssociationMixin<User, number>;
public removeUsers!: HasManyRemoveAssociationsMixin<User, number>;
}
// attach all the metadata to the model
// instead of this, you could also use decorators
UserGroup.init({ name: DataTypes.STRING }, { sequelize });
// associate
// it is important to import _after_ the model above is already exported so the circular reference works.
import { User } from './User';
export const Users = UserGroup.hasMany(User, { as: 'users', foreignKey: 'groupId' });