const UserError = require('vn-loopback/util/user-error'); module.exports = Self => { Self.remoteMethodCtx('recalculatePrice', { description: 'Calculates the price of a sale and its components', accessType: 'WRITE', accepts: [{ arg: 'id', description: 'The sale id', type: 'number', required: true, http: {source: 'path'} }], returns: { type: 'Number', root: true }, http: { path: `/:id/recalculatePrice`, verb: 'post' } }); Self.recalculatePrice = async(ctx, id) => { const models = Self.app.models; const sale = await Self.findById(id); const isEditable = await models.Ticket.isEditable(ctx, sale.ticketFk); if (!isEditable) throw new UserError(`The sales of this ticket can't be modified`); return Self.rawSql('CALL vn.sale_calculateComponent(?, null)', [id]); }; };