Getting Started with Firebase 9 #8 - Ordering Data & Timestamps

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[@coder2917]

Trust me guys, Shaun in one of the most clever instructors I've ever seen. thanks, Shaun

[@thedrunknmunky6571]

About 3:34 , serverTimestamp is for when the document was created at Firestore, while Timestamp is when you’re entering a certain time. Afaik, Firestore automatically converts a Date() to a Timestamp.

[@seanfang398]

Thank you so much for pointing it out! Thats very helpful

[@SvetaSveta-ms4hi]

Finally, I've been waiting for it so damn long! I can't thank you enough! 😍

[@Omerko]

It's nice that Firebase makes you add Index, as with Indexing it is much faster to query the database... 😀

[@jason-yb9qk]

when i use orderBy it gives me this error Firestore (9.9.3): Uncaught Error in snapshot listener: {"code":"failed-precondition","name":"FirebaseError"} does anyone know why? thanks

[@lucasjarrett6139]

I am having exactly the same error as soon as I try to add any variation of "orderBy" to my query. Anyone? Help? Note: Even if I create the index manually as it appears in the video above, orderBy does not work... adding orderBy causes an exception with the description posted by Jason above. Update: After further exploration and some testing, I discovered that my orderBy and where clauses are in conflict for some reason unknown to me. The following code works (presumably because I added manual indexing already): // Query Rule Example const rule = where("company", "==", "Papa John's") // Ordering Example const order = orderBy("creationTimestamp") // Querying the Collection Using a Query Rule const querier = query(reference, order) As does this code: // Query Rule Example const rule = where("company", "==", "Papa John's") // Ordering Example const order = orderBy("creationTimestamp") // Querying the Collection Using a Query Rule const querier = query(reference, rule) But THIS code causes the exception identified by Jason: // Query Rule Example const rule = where("company", "==", "Papa John's") // Ordering Example const order = orderBy("creationTimestamp") // Querying the Collection Using a Query Rule const querier = query(reference, rule, order) Halp?

[@maskman4821]

I sincerely hope Shaun could create a paypal/stripe payment tutorial with react/vue/svelte, everybody wants to learn from Shaun, and eagerly wants to start online transaction badly, hopefully Shaun can create such a tutorial/course 🙏🙏🙏

[@edisonmondal2798]

Sir! You have saved my life ❤❤🔥🔥🖤🖤

[@sinki3322]

It makes so much sense! Thank you!

[@olaitanmichael6025]

you gave me an answer to months old bug ...thank you so much

[@NetNinja]

Glad to hear that Olaitan :) thanks for watching

[@IliyaDamyanov]

Very good video.

[@tech3425]

Great course! Looking forward to more indepth Firebase 9 courses

[@ericjaw]

What does the timestamp format need to be in if you want to add your own arbitrary timestamp? Looks like just the UNIX epoch?

[@manoj-k]

🔥🔥🔥 waiting for next one

[@gonzaotc]

Incredible usefull series, thanks you a lot!

[@m.pashakhoshkebari2045]

Awesome. Thank you so much!

[@NetNinja]

You're very welcome! :)

[@riiya7928]

I didn't know Patrick Rothfuss' third book ABC is already out.

[@ericametta6964]

so helpful. thanks.

[@NetNinja]

Glad it was helpful! Thanks for watching Erica

[@BenJackGill]

So how do we solve the problem of duplicate books on the front end because onSnapshot is returning it twice (once for the uopdate, and again for when adding the timestamp)?

[@andrewclarke6916]

I'm assuming he's going to cover this problem in the next video when it is released.

[@parthipankalayini8]

💯🔥💯 Tensorflow JS videos?!

[@maskman4821]

That would be a interesting and intriguing topic, we definitely want to learn that from Shaun 😍

[@mohamedyoussef8835]

Awesome Tutorial ++++++++++++++++++++ Thank You

[@writecode9932]

Hi Shaun, Question: after adding timeStamp we start seeing that document had been read twice... which means we mean we read the that whole document twice.. how the pricing affects this method... will it cost double.. ??? what do you think if we could all our own machine time with data() with unix epoch time then convert as we want with our app ??

[@yayitseugene]

Hmmm console is not displaying any arrays after I deleted the 'books' collection, but my Firebase console updated my new entries though

[@kiche_allan]

Hello Ninja. My console is returning an empty array when retrieving data. What can I do

[@azermann1]

may be your web pack stops try npm run build in terminal and check again ( if you name "build": "webpack" in scripts which was in package.json)

[@kiche_allan]

@@azermann1 Thanks

[@azermann1]

@@kiche_allan yw

[@celesteomalowete7010]

Thank youuuuuuuuuuuuuuuuu

[@saraha.1336]

Can you do sql next

[@maskman4821]

Shaun said he will do supabase tutorial, which is a sql database, you know 😎

[@DiyorbekIsmoilov-db7jw]

Finally english

[@muhammad_abir]

please include fire auth with this series.....

[@difaz2292]

My console is returning empty array if i use snapshot with orderby query.. If im not using the query, it work perfectly and the array is not empty. Can anyone help me

[@unknowninsaan9809]

can you please show me that code you're using (if you still have it after a year)

[@DigitalDaco]

Interesting that asc and desc are case dependent, i noticed when i had title 'Z' appear before 'a' when in ascending order.

[@seanfang398]

well, it is not really case dependent, the real reason you found 'Z' before 'a' in an asc order is because firebase compare different characters by looking up their ASCII codes, and Z is 90, while a is 97, so that's what you got

[@DigitalDaco]

@@seanfang398 that makes complete sense, don't know why i didn't think of that at the time

[@rajatsharma6137]

Hi Shaun...Could You please do a series on firebase integration with flutter after the latest changes in firebase configuration...? @shaun

[@veniplex]

As of today I get an error when trying to filter with "where" and order by in the same query: "Uncaught Error in snapshot listener: FirebaseError: Order by clause cannot contain a field with an equality filter name". There is no link to create an index. If I remove the where function from the query, it works just fine without creating an index.

[@jonmasino1849]

I had this issue too. make sure you are not ordering by the same field that you are passing into the where function. For example, I was passing 'fname' into where and orderBy, but switched it to pass 'lname' into orderBy and this fixed it. The link then popped up in the console and I was able to add the index into firebase. Hope this helped

[@derekchan1045]

@firebase/firestore: Firestore (9.11.0): Uncaught Error in snapshot listener: {"code":"failed-precondition","name":"FirebaseError"} - if anyone is getting this error. You can try to uninstall firebase by running "npm uninstall firebase" on the terminal. Then install an older version of Firebase - "npm install firebase@9.6.11"

[@amnaarif9201]

link not popping up keep getting the error --> @firebase/firestore: Firestore (9.9.3): Uncaught Error in snapshot listener: {"code":"failed-precondition","name":"FirebaseError"}

[@johnpaullaniran475]

same here

[@tedthetutor4587]

It appears that in Firebase (9.11.0) the pop-up link to create an index no longer works. I can't find anything on how this works in the new version (newer doesn't necessarily mean better!) By the way, if we had an app that allowed the user to search by any field and order by either asc or desc, would we need to create an index for each one? This could mean setting up dozens of manually created indexes!