app2-api/modules/events/events_inscriptions.model.js

'use strict';
const Sequelize = require('sequelize');

const getStateText = (inscription) => {

    if (inscription.validated == true) 
       return 'Inscripción confirmada'
    else if (inscription.overflowEventId) 
       return 'Inscripción confirmada a lista de espera'
    else if (inscription.reservationId) 
        return'Inscripción confirmada a lista de espera de tu reserva'
    else 
        return 'N/A';
};


module.exports = function (sequelize, DataTypes) {
    const EventInscription = sequelize.define('EventInscription', {
        id: {
            type: DataTypes.UUID,
            defaultValue: DataTypes.UUIDV4,
            primaryKey: true,
        },
        date: {
            type: DataTypes.DATE,
        },
        code_ticket: {
            type: DataTypes.STRING(45),
        },
        type: {
            type: DataTypes.STRING,
            allowNull: false,
            defaultValue: 'regular'   //grupal, invitacion-regular, invitation-grupal
        },
        source: {
            type: DataTypes.STRING,   //app, web
        },
        marketing_memberId: {
            type: DataTypes.STRING,
        },
        validated: {
            type: DataTypes.BOOLEAN,
        },
        stateText: {
            type: Sequelize.VIRTUAL(Sequelize.STRING, ['validated', 'reservationId', 'overflowEventId']),
            get: function () {
                return getStateText(this);
            },
        },
        reservationId:{   //contendra el id de la reserva o de la lista de espera de la reserva
            type: DataTypes.UUID,
            foreignKey: true,
        },
        overflowEventId: {   //contendra el id del evento de lista de espera del evento
            type: DataTypes.UUID,
            foreignKey: true,
        }

    }, {
        tableName: 'events_inscriptions',
        freezeTableName: true,
        timestamps: true,

        defaultScope: {
            order: [
                ['date', 'DESC']
            ],
            include: [{ model: sequelize.models.User, as: 'user' }],            
        },             

    });

    EventInscription.associate = function (models) {
        EventInscription.Event = EventInscription.belongsTo(models.Event, { foreignKey: 'eventId', as: 'event' });        
        EventInscription.Reservation = EventInscription.belongsTo(models.EventReservation, { foreignKey: 'reservationId', as: 'reservation'}); 
        EventInscription.User = EventInscription.belongsTo(models.User, { foreignKey: 'userId', as: 'user' });                
        EventInscription.UserValidate = EventInscription.belongsTo(models.User, { foreignKey: 'validateUserId' });
    };

    EventInscription.addScope('includeEventAndVenue', () => {
        return {
            include: [{
                model: sequelize.models.Event,
                as: 'event',
                attributes: ['id', 'name', 'description', 'campaign_text', 'init_date', 'end_date', 'init_available_date',
                                'end_available_date', 'stateCode', 'stateText'],
                include: [{ 
                    model: sequelize.models.Venue, 
                    as: 'venue',                        
                    attributes: {
                        exclude: ['createdAt', 'updatedAt'],
                    }
                }]
            }],
        }
    });

    return EventInscription;
};