function defineProject(sequelize, DataTypes) { const Project = sequelize.define('Project', { name: { type: DataTypes.STRING, allowNull: false, }, detail: { type: DataTypes.STRING, allowNull: true, }, }); Project.associate = (models) => { Project.hasMany(models.Folder, { foreignKey: 'projectId' }); }; return Project; } module.exports = defineProject;