13 lines
381 B
JavaScript
13 lines
381 B
JavaScript
const cds = require('@sap/cds')
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module.exports = cds.service.impl (function(){
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this.before ('NEW','Authors', genid)
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this.before ('NEW','Books', genid)
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})
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/** Generate primary keys for target entity in request */
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async function genid (req) {
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const {ID} = await cds.tx(req).run (SELECT.one.from(req.target).columns('max(ID) as ID'))
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req.data.ID = ID - ID % 100 + 100 + 1
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}
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