salix/modules/travel/back/models/travel.js

const UserError = require('vn-loopback/util/user-error');

module.exports = Self => {
    require('../methods/travel/getTravel')(Self);
    require('../methods/travel/getEntries')(Self);
    require('../methods/travel/filter')(Self);
    require('../methods/travel/createThermograph')(Self);
    require('../methods/travel/deleteThermograph')(Self);
    require('../methods/travel/updateThermograph')(Self);

    Self.rewriteDbError(function(err) {
        if (err.code === 'ER_DUP_ENTRY')
            return new UserError('A travel with this data already exists');
        return err;
    });
};