gchat | Tiny-chat example using Gradle Groovy GroovyTemplate | Application Framework library
kandi X-RAY | gchat Summary
kandi X-RAY | gchat Summary
Tiny-chat example using Gradle, Groovy, GroovyTemplate, Java and Spring (Data, MVC and Websocket).
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QUESTION
I'm trying to do a relatively simple, in theory, function using Firebase Functions.
Specifically:
Add
+ 1
to a realtime database variable for all usersSend a notification to all users
I'm still trying to understand async
/await
which is probably why I'm struggling so much with this.
Here is what I'm doing:
...ANSWER
Answered 2019-Jan-07 at 22:29All uses of await
have to occur within the main body of a function that's marked async
. Your function sendGCNotification
is not async. You'll have to mark it async, and also make sure that any promises within it have been awaited, or return a promise that resolves when all the async work is done.
Also, in IncrementUser
you are not handling the promise returned by gcMessageRef.transaction(). You need to handle every promise that you generate from all the async work, and make sure they are all a part of the final promise that you return or await from your top-level function.
If you want to learn more about promises and async/await in Cloud Functions code, I suggest you use my video series. Specifically, the one titled "How does async/await work with TypeScript and ECMAScript 2017?". Even if you aren't using TypeScript, async/await work the same way.
QUESTION
This SQL is working fine and display only the messages in table gchat where the user is a member in the group
...ANSWER
Answered 2017-Mar-07 at 10:54SELECT * FROM
(
SELECT gchat.id,gchat.fromuser,gchat.text,gchat.date
FROM gchat
LEFT JOIN codes ON (gchat.code = codes.code)
WHERE codes.u_username = 'user1'
UNION
SELECT id,fromuser,text,date
FROM pchat
WHERE fromuser='user1'
)Z
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