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async style

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D065023
2019-11-29 12:24:22 +01:00
parent 8f3d112558
commit ed3ecd502f
1 changed files with 12 additions and 14 deletions
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26
packages/bookshop/srv/cat-service.js
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@@ -12,14 +12,14 @@ module.exports = cds.service.impl(function () {
}) })
/** Add some discount for overstocked books */ /** Add some discount for overstocked books */
function _addDiscount2 (each, discount) { function _addDiscount2(each, discount) {
each.title += ` -- ${discount}% discount!` each.title += ` -- ${discount}% discount!`
} }
/** Reduce stock of ordered books if available stock suffices */ /** Reduce stock of ordered books if available stock suffices */
async function _reduceStock (req) { async function _reduceStock(req) {
const { Items: OrderItems } = req.data const { Items: OrderItems } = req.data
return cds const all = await cds
.transaction(req) .transaction(req)
.run(() => .run(() =>
OrderItems.map(order => OrderItems.map(order =>
@@ -29,15 +29,13 @@ async function _reduceStock (req) {
.and('stock >=', order.amount) .and('stock >=', order.amount)
) )
) )
.then(all => all.forEach((affectedRows, i) => {
all.forEach((affectedRows, i) => { if (affectedRows === 0)
if (affectedRows === 0) req.error(
req.error( 409,
409, `${OrderItems[i].amount} exceeds stock for book #${
`${OrderItems[i].amount} exceeds stock for book #${ OrderItems[i].book_ID
OrderItems[i].book_ID }`
}` )
) })
})
)
} }