From 452b44224612810340a46c8fafad5b01bdfbacb4 Mon Sep 17 00:00:00 2001 From: Christian Georgi Date: Fri, 7 Feb 2020 13:13:31 +0000 Subject: [PATCH] More handlers for demo --- packages/bookshop/srv/cat-service.js | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/packages/bookshop/srv/cat-service.js b/packages/bookshop/srv/cat-service.js index bd04c51e..9959aaf6 100644 --- a/packages/bookshop/srv/cat-service.js +++ b/packages/bookshop/srv/cat-service.js @@ -2,9 +2,10 @@ const cds = require('@sap/cds') const { Books } = cds.entities /** Service implementation for CatalogService */ -module.exports = cds.service.impl(function() { - this.after ('READ', 'Books', each => each.stock > 111 && _addDiscount2(each,11)) - this.before ('CREATE', 'Orders', _reduceStock) +module.exports = cds.service.impl(srv => { + srv.after ('READ', 'Books', each => each.stock > 111 && _addDiscount2(each,11)) + srv.before ('CREATE', 'Orders', _reduceStock) + // srv.before ('*', (req) => { console.debug ('>>>', req.method, req.target && req.target.name) }) }) /** Add some discount for overstocked books */ @@ -15,6 +16,8 @@ function _addDiscount2 (each,discount) { /** Reduce stock of ordered books if available stock suffices */ async function _reduceStock (req) { const { Items: OrderItems } = req.data + // req.on('failed', () => {console.debug ('>>> failed for order', req.data.ID)}) + return cds.transaction(req) .run (()=> OrderItems.map (order => UPDATE (Books) .set ('stock -=', order.amount) .where ('ID =', order.book_ID) .and ('stock >=', order.amount)