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Updated reviews samples for messaging GA

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This commit is contained in:
Daniel
2021-10-18 17:43:45 +02:00
committed by Daniel Hutzel
parent 5f89334403
commit 404427237b
12 changed files with 83 additions and 12 deletions
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9
reviews/srv/reviews-service.cds
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@@ -8,10 +8,11 @@ service ReviewsService {
action unlike (review: type of Reviews:ID);
// Async API
event reviewed : {
subject: type of Reviews:subject;
rating: Decimal(2,1)
}
event reviewed : {
subject : type of Reviews:subject;
count : Integer;
rating : Decimal;
}
// Input validation
annotate Reviews with {

8
reviews/srv/reviews-service.js
View File

@@ -12,11 +12,11 @@ module.exports = cds.service.impl (function(){
// Emit an event to inform subscribers about new avg ratings for reviewed subjects
this.after (['CREATE','UPDATE','DELETE'], 'Reviews', async function(_,req) {
const {subject} = req.data
const {rating} = await cds.tx(req) .run (
SELECT.one (['round(avg(rating),2) as rating']) .from (Reviews) .where ({subject})
const { count, rating } = await cds.tx(req) .run (
SELECT.one `round(avg(rating),2) as rating, count(*) as count` .from (Reviews) .where ({subject})
)
global.it || console.log ('< emitting:', 'reviewed', { subject, rating })
await this.emit ('reviewed', { subject, rating })
global.it || console.log ('< emitting:', 'reviewed', { subject, count, rating })
await this.emit ('reviewed', { subject, count, rating })
})
// Increment counter for reviews considered helpful