Firestore order by timestamp descending. Order Firestore data by TimeStamp in Ascending order.

Firestore order by timestamp descending A more detailed explanation can be found here: Firestore Order Firestore data by TimeStamp in Ascending order. The Firestore documentation on queries contains the examples of a valid and invalid query. documentID() maps to) is populated with the path of the document, rather than just its document ID. Go to Composite Indexes. how to order by timestamp There is no way to indicate that you want the items in descending order. Limitations of using sequential IDs in Cloud Firestore; The second question is for document ordering (or maybe for filtering), A: I set the document id as event timestamp string, and each of them has a field called "event", and another architecture B is to make the document a random id and make the time data into the field "time" Once I get all the data I would like to sort the list by the createdOn field (which is a timestamp) but I'm unsure as to how to sort it. doc(doc). So the question is how we retrieve the announcements fields based on created timestamp which is created_at field in descending order?. Commented Sep 15, 2022 at 19:50. Data from an input get sent to Firestore then shown on the feed, the problem is that the posts are not in desc order but alphabetical due to the unique id given by Firestore. orderBy it works but when I add the order filter it stops working. orderBy('timestamp') if the timestamp was simply a doc item. subscribe Ordering and limiting Firestore queries in descending order. For detailed documentation that includes this code sample, see the following: To search and filter code samples for other For example, if you wanted to order by state, and within each state order by population in descending order: You can combine where() filters with orderBy() and limit(). toDate() method. It will be converted to a Firestore Timestamp by the Firestore SDK. Related. firebase. Regards A little more detail about what I'm trying to do: I want to be able to get the last uploaded document from the database. I have a list of documents, and here 1 of them: end_hour: 21 master: "WIZ1d74QmvMNDEQKulJyiQNCnad2" start_hour: 13 working_day: January 11, 2022 at 9:00:00 PM UTC+3 Also bear in mind that when you retrieve that Firestore document, the createdAt property will be a Firestore Timestamp object which you'll likely need to convert to a Javascript Date using the object's . As you can see in the snippets below, this is failing once i combine orderBy('date', 'desc') with startAfter(lastDoc. Some indexes are created automatically, including the one I need for the above query. In order to sort objects by time: Option 1: Create timestamp on client (correctness not guaranteed): I'm getting all the documents containing a certain value and ordering them by 'timestamp'. Hey gang, in this Firebase Firestore tutorial I'll show you how we can use the orderBy method to order our data before we retrieve it. where('field', whereNotIn: [‘data’]) . collection("users") . var snapshot = await Firestore. collection("collectionPath") . whereField("followers", arrayContains: uid). Stack Overflow. order(by: "timestamp", descending: true). orderBy("likes", Query. collection('customer I'm using a cloud Firebase function with Admin SDK to fetch the most recent document from my Firestore collection. @DougStevenson Hi. length + 1) * -1 } firebase. Firestore only allows queries where it can meet its performance guarantees, and for ordering/range-filtering on multiple fields that is not (currently) possible. However this does not work. 18 2 Firestore - Orderby Descending. I'm currently studying how to retrieve data using Firebase specifically using Cloud Firestore. That's correct, like most database, Firestore doesn't store creation times. But then you will have to re-sort the documents by ascending time in thh client if you want to iterate or display them in ascending order. I was able to get this to work by simply changing the order from asc to desc. js app to retrieve items from Firestore database and arrange those items in order by timestamp. I'm trying to give each post a timestamp and then show in desc order. For the latter approach, it is common to have a inverted timestamp. collection(collection). I am also using useCollectionD Ordering and limiting Firestore queries in descending order (async) Ordering and limiting Firestore queries with a filter; Ordering and limiting Firestore queries with a filter (async) Update a Firestore document Timestamp; Update a Firestore document Timestamp (async) Update a Firestore document using merge; Update a Firestore document Your query results will first be ordered by geohash and only then on timestamp, meaning that the value of the timestamp field only affects the order of the results for documents where the value of geohash is the same. getInstance(). Now when the user uploads the document, a field is in the database set to date, which will populate Jan 19, val eventsQuery = firestore . instance; var room = ref. collection("topics") . i try to show a array list sorted by its Timestamp in an descending order (newest first --> highest ts first) therefore i created a downloading method and a sorting method: func getBlogsByAuthor( @Abdullah. map( (snapshot) => snapshot. If you're using Firestore, there's no way to use the setWithPriority and Version 3. where('exam', isEqualTo: _doc) . Nota: Si bien las muestras de código abarcan varios lenguajes, el texto explicativo usa los nombres de los métodos para la To order your documents chronologically, you should add your own timestamp field to the documents. This is a chat app, I trying to order the messages uploaded to firestore db with timestamp to show the last messages descending on the listView, but I after I add the 'timestamp' field to collection and call . type - Ascending ids - Array messageUpdatedAt - Descending Am i doing something wrong ? Is there anyway run this without commenting and get an ordered result set (based on messageUpdatedAt field). . orderByChild('ups'). fire Firestore can only order/filter data on values that it has indexes for. limit(3); flutter firestore sort by timestamp; flutter firestore order by descending Comment . Firestore has a method called orderBy. Essas consultas também podem ser usadas com get() ou addSnapshotListener(), conforme descrito em Receber dados. postsSnap = await _firebaseFirestore . The order of the field values must match the order of the order by clauses of the query. Query documents by most recent date. ("posts") . Note that they will primarily be ordered by geoHash, and only I want to query my Workout Collection for the latest workout from a routine. And then you start your second with I am trying to sort a collection data by timestamp (date field's type is a timestamp in firebase) as below. orderBy("time", "desc"). What I've tried: I've checked the DB and the property I'm using which is called "DateCreated" and it's a valid timestamp type. Cloud Firestore proporciona una potente función de consulta para especificar qué documentos deseas recuperar de una colección. where(field: "uid", in: arrayOfUids) . orderBy('created_at') // Let's assume documents ordered descending by timestamp, with ids F, E, D, C, B, A: So in your example, you have F,E,D in your first query. collection(&q Firestore orderBy descending is not working. i think you making two mistake first you useing ordey by before where thats a wrong way to use the where so put where first and then use order by and second your first collection field should not empty if its empty thsts shows italic so you cant fetch data. My guess is that I may be using the wrong type of Direction. 5. So to solve this, you need to add a new property under each post named likes and use the following line of code to query:. ref('books'). You may want to actually at the same time format the date FirebaseFirestore db = FirebaseFirestore. If you want to be able to order your documents by creation Firestore. If your query was just postsRef. Instead I decided to add a field in the contents document like so: { tags: Firestore queries can only sort or filter range on a single field. orderBy("time", com. orderBy(Timestamp. limit(to: 10) //put the timeStamp in a global variable var lastTimestamp: Timestamp? lastTimeStamp = snapshot. onSnapshot((snapshot) => { }); The second argument to To solve the problem, we added a new feature that lets you order and filter right in the data viewer. Query firstQuery = firebaseFirestore. Tuan Anh Order Firestore data by TimeStamp in Ascending order. 9. Thanks for the clarification @devnoaman, I still its working, Also I think since you are applying orderBy on a timestamp with each message having timeStamp. So if you want to filter on FieldPath. 41. There is no magic. ref('itemList'). orderBy(QUALITY_SCORE, DESCENDING). Once arranged in the array, I should get them all arranged nearly in descending order the further up I scroll just like Whatsapp, FB Messenger etc. and I want to sorting post with timestamp and order by DESCENDING. i am trying to query a list in firestore that should be sorted by a descending date property and make use of a startAfter cursor to paginate the results. Adding a Timestamp field to your documents. collection(collection) . The IDE gives three options for Direction. toString(), descending: true) I see empty screen!, even though I see the messgese in firbaase firestore console "on web" After reading order-limit-data and query-cursors I came up with those solutions, sadly none of them worked. collection('discounts') . For example, you See more I'm trying to display the data from Firestore order by timestamp descending order, I follow the documentation but it seems that I did something wrong. snapshots(). I want to order the data by the timeDate value which holds the date in the format yyyy-MM-dd but in string type date type. I tried using new Date() also compared with a string of date exactly the same as Firestore Timestamp format but still all transaction appear before the time or no transaction is included at this time. Ordering Firestore documents in descending order in Flutter? 1. How did you want it sorted? – Clockwork-Muse. In that case it will compare numbers. _document. DESCENDING) As you can see, no matter what order they are written to Firestore, it's clear that the one with the latest timestamp (20191201 ) is the last message. I have queried and ordered my data by the timeStamp field, using . Open the Cloud Firestore Composite Indexes page in the Firebase console. where('review', isNotEqu Currently it is displaying text messages sent on the left and then text messages received on the right. 9 Firestore pagination: startAfter() returning no data when when using orderBy() descending, but working for ascending descending, but working for ascending. snapshots(), If the data type of your indexNo property is of type String and if you want to order the results using Query. Then while retrieving the list of the Orders, you can use the same orderBy("order_created_date",Query. firestore(). { return _db. orderBy("created_at", Query. This value is explicitly provided when the Ordering is based on a timestamp field. posts) . There are two ways in which you can solve this issue. TIMESTAMP are both from the Realtime Database API. To solve this, you should change the type of your date property to number. Firestore has no built in concept of the most recent document, so what you'll want to do is: Add a timestamp field to each document that you set to the current time (preferably a server-side timestamp, but client-side will probably work too). 0 firestore js multiple orderBy not sorting result Each row of the table represents a survey response, and I have a timestamp field associated with each response that indicates when it was submitted. Modified 3 years, Firestore orderBy Timestamp DESC. Improve this question. orderBy("score", "desc") . order(by: "timestamp", descending: false) . I have a Unix timestamp (in seconds) in my app which I like to compare this to (using isLessThan:), but the value in Firestore apparently is inside this Timestamp object. Share. orderBy(DateTime. There are two options to get the behavior you want: Use a Firebase query to get the correct data, then re-order it client-side. where('idConsultant', isEqualTo: firebaseUser. collection("collectionPath") Doug has confirmed the impossibility of the thing. 0. Improve this answer. The above example orders all user in the snapshot by age in descending order. orderBy() and have the ordered results and wish to write to a document in another collection called "mostRecent" with roughly this structure: Bug report I am trying to sort a collection data by timestamp (date field's type is a timestamp in firebase) as below. So: if you can find a way to express the relation between a birthday and a creation timestamp, you can combine those two values in a single field and order on that. e "createdAt). Query working perfectly here but when Im try to ordering the query by timestamp desc, its not working Here is my code let ref = db. xDate is saved with the firestore "timestamp" and xId is a single field. Order Firestore data I have a firestore structure like- --> { colors: [], createdAt: TIMESTAMP } (each document) I want to fetch all data and order according to timestamp using onSnapshot() listener and store it into state using react hook. according firestore its means its delted by defalut. collection("References"). Firestore startAfter() returning the same data in infinite scrolling when ordered by descending timestamp - Cannot refactor solution to my circumstances How to combine Firestore orderBy desc with startAfter cursor - Cannot refactor solution to There is no way to order descending order. – This will give you 20 latest chats in ascending order timestamp. Is it possible? Or what is the e I am attempting to create a chat app using firestore. I believe the problem is in the checkForUpdates() function. Firebase Snapshot document data order isn't same all the time. I would like the chat activity to load the most recent X messages, and add any new ones to the bottom in realtime using a SnapshotListener. The first one would be to change the data type of your property from FutureBuilder with a Firestore query on a field of Type timestamp comes back with no data in snapshot. I'm querying a "Sessions" collection for sessions with a UserID == string, this works fine. These queries can also be used with either get() or addSnapshotListener(), as described in Get Data. push(newItem); I gave it a negative value because when you call orderByChild() it will order it in ascending order As in the above picture I'm using the timestamp field which has a timestamp datatype, to do a orderBy descending query. – In my Firestore database I have some documents in a collection that look like this: { name: "Item 1", count: 2, timestamp: January 29, 2018 at 3:43:12 PM UTC-8 } I'm trying to query this collection such that the documents are ordered by count in descending order, AND have their timestamp's date equal to today's date. One of the options is to estimate the value. ,The above query orders the users by age in descending order, but only returns users whose age is between 18 and 30. Now flip this list and use it. What am I Android Firebase Firestore SDK: How to order documents from a collection, according to the field of documents of another collection? 0 How to sort Firestore query results with whereField is using arrayContainsAny and in I have this method that retrieves data from the firestore service. In Let us order by timestamp and indescending order. They will always sort in lexicographic string order, which is not the same. order(by: "date", descending: true) . Hope this helps someone, there was a need to create an index for this in firestore's indexes section: posts userId Ascending postTime Descending Collection Order and limit data. The original query required a composite index of three fields. node. now() Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company My Feed class is down below. Source: Grepper. ServerTimestamp is always null on Firebase Firestore. There is no way to change this behavior for range queries such as the one you're doing. I have created a sample database like this. I have tried everything to get the data to order by timestamp. In the Google Cloud console, go to the Databases page. Firestore end before documents not working properly. Please see also here informations about ServerTimestamp: Annotation used to mark a timestamp field to be populated with a I found a workaround to the problem. collection("items") . So for instance, before the user uploads, they select a date through UIDatePicker(). – Alessandro Aguilar Commented Aug 13, 2020 at 5:41 I'm trying to query Firestore documents by a Timestamp field (e. DocumentSnapshot has variations of field accessor methods (such as getData()) that take a ServerTimestampBehavior enum to indicate what the SDK should take as the value of that server timestamp field. For each index that contains the timestamp field, click the more_vert button and click Delete. As you can see, I'm using Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company You call . limit(5) This should get you the 5 newest documents by time. getTime(); So, I have a firestore collection, and I want to get the data with sort by descending, and It is not working. addSnapshotListener(snapshotListener()) Inside my snapshot listener, I save the last document from the snapshot, in order to use that as a starting point for my next page. DESCENDING: Query. now() to get the current the current time in the Firestore timestamp format and Firestore. Hot Network firebase. I get that I need to use server timestamps, but can't figure out a way to implement sorting to my way of displaying Firebase data. js; firebase; google-cloud-platform; google-cloud-firestore; google-cloud-functions; I want to sort the orderby by "doc. However, the same query without the orderBy works just fine. ServerValue. I want to display the Id of the data in descending order by dates but with pagination from a cursor, either with the xDate or xId field or both (xDate and xId). Also add setStackFromEnd to true. So, at some time I will request the next page of items like this: Firestore. database(). I am passing the last document snapshot in the startAfter argument. I have followed this Order and limit data with Cloud Firestore but the syntax does not If you already know how to order based on timestamp, then you should do in the same way to order by likes. orderBy("timestamp", Query. It works exactly the way you would expect it to work. timestamp. version. Skip to main content. You can use it to order the documents in descending order. Alternatively, you can add a regular field with the document ID to how to get the snapshot of collection ( "message" ) by Descending order using "orderBy" method in firebase js v9. Using orderBy and where is not . data()["timestamp"] as! Timestamp Then, when you make your next request, your query should look something like this The second argument to orderBy() controls the sort order, either “asc” (ascending) or “desc” (descending). I want to sort the table data based on the timestamp field in descending order, so that the most recent survey responses appear at the top of the table. getDocuments(); But Firestore makes a compound query and sorts by 'exam' (alphabetical) and by 'timestamp'. A Stack Overflow. second batch: 06 Oct 07 Oct 15 Oct 18 Oct. DESCENDING and StructuredQuery. From the Firestore add a document documentation: Important: Unlike "push IDs" in the Firebase Realtime Database, Cloud Firestore auto-generated IDs do not provide any automatic ordering. If you specify a limit(), the value must be greater than or equalto zero. I try to order the newest by the following: date: "29 September 2019" Firestore. Indexes are only created for fields in your document (and the document ID), not for implicit metadata such as the timestamp it keeps internally. DESCENDING) If you need to conditionally apply operations, however, you will need to take the first approach. 2. whereEqualTo and orderBy work separately but not combined. Congrats! Learn more about sorting and filtering data in cloud firestore in this awesome firebase doc. Among other things, Firestore automatically creates single-field ascending and descending indexes for every scalar field in My cloud firestore database has an "orders" collection and in HTML I have a 'save' button to add document(s) into that "orders" collection upon clicking. Creates and returns a new Query that starts after the provided fields relative to the order of the query. orderBy(TIMESTAMP, DESCENDING). enter image description here. How to use orderBy query in this code below. Thank you. Without seeing all of the relevant code, it's not possible to see what you might be doing wrong. i do this by having a field 'uploaded' which is simply a TimeStamp field (uploaded via a python script using the firestore_admin library calling firestore. Sort the query on descending values of that new timestamp field. ,The above query orders the users by age in descending order, however only returns documents whose order starts at the user with an ID of DEF. limit(to: 3) . I found good reference and example here. snapshots I have the following database configuration: enter image description here collection Posts -> postID -> in here another collection called LikesNumber -> document currentLikesNumber -> field currentNoOfLikes I want to query my Workout Collection for the latest workout from a routine. It's pretty likely I'm wrong. I hope it will help:) UPDATE: Setting descending to TRUE seems to do the trick ios; firebase; google-cloud-firestore; Share. The following works perfectly. But somehow if I change the sort orientation Cloud Firestore には、コレクションから取得するドキュメントを指定できる強力なクエリ機能があります。これらのクエリは、データを取得するで説明しているように、get() または addSnapshotListener() とあわせて使用することもできます。注: コードサンプルは複数の言語に対応していますが @TarikHuber I'm building a LinkedIn clone where users can post onto the feed. So I used orderBy in my query but I'm getting queryDocumentSnapshot as null. google. limit(to: 5) or in case of starting from a particular timestamp I'm trying to sort out trending posts by sorting them by time and karma using the following code: FirebaseFirestore. flutterfire where and orderby not return data. Quick firebase cloud firestore guide on how to use timestamp to filter and order documents. order(by: "timestamp", descending: true) . Instead, Cloud Firestore helps you identify and create required composite indexes as you build your app. DESCENDING, OrderBy. limit(to: 3) it works, but if I try to refresh it just loads the for newbies (me) who are not able to build the index correctly, either could i, so went to firebase project / cloud firestore / indexes, deleted what was there, ran the code, and vs code gave me exact url to biuld the index in the way the code needed it. I am wondering what i am doing wrong. 0 Answers Avg Quality 2/10 I am attempting to enable my Vue. And the index is also created. Meaning I query with whereEqualTo my routineKey, order it by the Started TimeStamp in descending order and then limit to 1 and then take the this 1st Key/Id of the Workout. While both are databases that are part of Firebase, they are completely separate and don't share APIs. Normally, I would use: let ref = db. I'm making a simple todo app with ReactJS and Firebase and I want to sort my todos by the time they were made. My message class has a timestamp in the form of a Date object. You can just write a Date object. Tuan Anh Vu. And here you can how to add and get back the timestamp. You're using Cloud Firestore, but setWithPriority and Firebase. where('review', To sort by a field, I can just add an orderBy(): db. If you want a "desc" ordering, you have to create the index for "desc". instance . If your data query is too large to sort client side you can do. DESCENDING, the result will be not the expected one because when you order strings, the results are ordered lexicographically. and I have firebase cloud function triggers when a new post is created, updated or deleted, such that the corresponding post in the records are in descending order as needed: but matching it by second to the first column reveals that it's still sorted by a descending timestamp. orderBy with react-firebase-hooks/firestore not working. I have found order by timestamp but don't want to do that as multiple documents could be created at the same time. Inequalities (INCLUDING in and not-in) are accomplished by sorting by the index, and using the value as a "cut-off" - thus REQUIRING (whether you want it or not) the orderby() to be on the same field as the inequality. The "answer not working anymore" was never really working in I'm using Firestore in one of my project. collection("games") . What am I O Cloud Firestore oferece uma poderosa funcionalidade de consulta para especificar quais documentos você quer recuperar em uma coleção. here i trying to get the collection("messages") snapshot which conatains document, but i want to get the collections snapshot which shoud be order by "timestamp" feild of docume Cloud Firestore does not automatically create composite indexes like it does for single-field indexes because of the large number of possible field combinations. So, at some time I will request the next page of items like this: I want query in Firestore database where post author equals current user [this part works fine]. Any ideas? Internally, Firestore understands how to use both components to perform accurate chronological comparisons of the point in time represented by Timestamp. 0 Unable to Order Data Chronologically Using Cloud Firestore. map((doc Currently, I am uploading information to Google Firestore and will be uploading the information with a date that the user gives. But I don't know how to do it. Sort gcloud firestore operations by Firebase Console. orderBy('date', descending: true) It means that your order the above results by date only when two or more reviews are the same. documentID(), you will need to know the entire path of the document(s). Commented Feb 15, 2012 at 23:27 Each row of the table represents a survey response, and I have a timestamp field associated with each response that indicates when it was submitted. -1 * new Date(). Firestore orderBy function in react. In other words, display all the most current data to the least recent and with paging. For example, October 1, 2019 will sort after January 1, 2020, even though it's earlier in time, because the initial character "1" is greater than "0". ,The above I have been trying to find out how to order documents by their IDs in ascending or descending order (doesn't matter) but couldn't find a single solution to that. Share . This means that the documents are first ordered by descending timestamp, and when those are the same, they are ordered by descending quality score. Direction. However,i would like the text messages of both received and send to be sorted by timestamp at If you're storing dates as strings like that (dd/mm/yyyy), they will not always sort in date order. I need to paginate the query so that I'm able to perform later more queries starting from a precise timestamp; The code should look like this: Firestore. whereField("author. Can someone please take a look and tell me what is going on. Ask Question Asked 3 years, 5 months ago. React. By default, a query retrieves all documents that satisfy the query in ascendingorder by document ID. DESCENDING in orderBy. asked Aug 16, 2018 at 18:33. However, if you insist to store the dates and times as Strings, the option that you have is to store them in a format that can be sorted lexicographical and chronological at the same time. Since all documents in the result set have a unique timestamp, that is the only visible result. orderBy("like_count", "desc"). DESCENDING. I'll also discuss inde Firestore queries can only order on a single field. 3 Problem I am trying to order documents from Firebase Cloud Firestore based on a timestamp. date). Let's call order_created_date. firebase. orderBy(firebase. documents?. it's better to same all docs with same id in different collections with single firestore I added the child order so when I saved the object to firebase it looked something like this: var newItem = { title: "Title to the post", order: (this. instance. limit(50) . WHen I click on the link in the console to add the index, I get this message in the Firestore console to add: I have to make a composite index with these fields: monthApr Ascending monthAug Ascending monthDec Ascending timestamp Descending Now I never wanted these fields ascending, only the timestamp? Note: This only happens when I include: In the new Cloud Firestore, you need to store the date as a Date object in order to be able to sort your records according to it. When I remove the loadData() function the apps displayed the posts in order by timestamp, but new post always go to the end of the view. now() (since it will be a unique time for each message) so the order will totally depend on descending parameter im failing to order my data by timestamp in descending order, error keeps saying have positioned it wrong StreamBuilder( stream: Firestore. When I order by. Go to Databases I am use Flutter Firebase SDK. This date is automatically registered by firestore, so the position of the value is different. SERVER_TIMESTAMP) Let me know if any more information is required Order Firestore data by TimeStamp in Ascending order – Miguel Fernández. An example Firestore timestamp is as follows: Timestamp { _seconds: 1575888466, _nanoseconds: 725000000 } I have replicated what you have described and it works well using the Firestore. I can't order my firestore data by multiple fields. Load Firestore documents descending order by time from bottom to top. Link to this answer Share Copy Link . This introduction video is a little outdated (because "OR" queries are now possible using the "in" operator) but it does give a good visualization of what Firestore is doing as it runs a query. Popularity 8/10 Helpfulness 6/10 Language whatever. But if you see two fields split out like that, you are definitely doing something wrong. For exampe : postId is "==" condition so you don't have tu use an ordering, but with orderBy("data", "asc"), you have to let "asc" ordering. What I want is to get a list of users within an age range and ordered by the 'createdAt' timestamp, but because of the 'birthday' range filter the first orderBy must be on 'birthday' field. uid", isEqualTo: uid) . You can use OrderedDict. collection("posts") . See sample code below: I want to query my Workout Collection for the latest workout from a routine. How to use orderBy in firebase. Or you can always set reverseLayout to true in your recycler view. I have asked this question before but not found a working solution yet. Ordering is based on a timestamp field. Firebase Firestore order by not working. If I don't make the order descending, it works perfectly. order(by: "createdAt", descending: true) Both do not work, but if I comment out the . There is no way in which you can sort your items by date if you are storing the date as String "29/11/2018" and not as a timestamp. – Timestamp is a firestore timestamp value, and no, It just comes with any result If I query by descending order. collection("Questions") . 1 Ordering Firestore documents in descending Im having trouble paginating data by its descending timestamp in Firestore (fetch newest first). If you are a beginner or would want to try out the magic with cloud firestore for web, get started in this codelab here. getDocuments() And you can store createdAt on flutter side with Timestamp (Its included in cloud_firestore), and you can get current timestamp with Timestamp. Here's a snippet of code showing how I build the list: 2. orderBy( 'timestamp', descending: true, ) . Now, having the type of the date property as Firestore Timestamp, your query will work perfectly fine. This means you have two common options: Reverse the nodes on the client. To get the last message we need a query that does two things: 1) Query the messages node, sort descending, which will put the last message 'at the top' I would add one more field in the Firestore, which accepts Unix time in milliseconds. Not sure why it initially was showing up in the order that they were stored in the database. Below is what I have so far, which sorts the X oldest messages by timestamp, but ignores all messages Unfortunately firebase doesn't allow returning by descending order. So there is only one range comparison on date--contentType is used only for equality check--and two ordering on date and response. limit(10), I am retreiving a list from Firestore and I need to use query where to retrieve specific UserID but at the same time I need also to order this list by the timestamp. "StartAt","EndBefore" to use for getting new post data. I have generally just reversed the order of the results returned client side. 1. I am seeing this: Both ways the results were not ordered by timeStamp Please don't say what the results weren't, but show what the results were, and how you expected them. collection(Paths. Flutter sort Firebase snapshot by timestamp. firestore. This is my try: this. I will keep my fields day, month and I will add a field "timeRange" (This field will take a value ranging from 1 to 10, to locate approximately the hour of the question in the day). The only way to order over multiple values is find a way to combine the two values into a single field in a meaningful way. orderBy("date", descending: true) // 1 will be last, 31 will be latest . orderBy line it It worked but in ascending order, I'm looking for a way to make the order descending. Estas consultas también se pueden usar con get() o addSnapshotListener(), como se describe en cómo obtener datos. If you want to further process the documentation in It means that you order the results ascending according to the review field. Order Firestore data by TimeStamp in Ascending order. collection('posts') . Timestamp. Which outputs a date in the format as: Jan 19, 2018. seconds" which is displayed in console. 41 Order Firestore data by TimeStamp in Ascending order. itemListFromDatabase. orderBy('createdAt', descending: true or false). But neither true nor false worked, instead !snapshot. where('otherfield}', isEqualTo: anotherField the first batch (newest first as the query is descending order of timestamp mentioned above): 20 Oct 25 Oct 28 Oct 31 Oct. Follow the generated link to the Firebase console, review the automatically Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have a field "createdAt" which is a server timestamp it looks like this on firestore When running my query without the . orderBy to access descending bool. collection("news"). like, both of which compose the composite index. Tags: flutter whatever. Follow I am trying to return the the documents in order of my upload_timestamp field but they appear to be in random order this is my Python Flask code: So you are getting the values from Firestore in the order, but after inserting to dict the order is lost. DESCENDING). When I use this compound query it cause error: . I want to sort the table data based on the timestamp field in descending order, so that the most recent survey responses appear at the top of For everyone recently using Firebase Firestore, there's a difference depending on your settings of your Firebase implementation (depending on the firebase version). userPosts (collection) -> uniqueID (document) -> timeStamp (field) There are around 100 or so uniqueID's with different timeStamp values. I'm expecting descending order (the newest on top). parse("timeDate"), descending: true). uid) . GCP Console. Timestamp field returns something like Timestamp(seconds=1599170400, nanoseconds=0). now(). collection("Posts"). Cloud Firestore has a way of dealing with server timestamps that have not committed. If you want the list to be primarily sorted by timestamp, and secondarily sorted by status, the timestamp orderBy it should come before the orderBy on status (right now, you are sorting primarily on status and secondarily on timestamp). What am I When performing a query, Firestore must be able to traverse an index in a continuous fashion. ch yes, I indexed every document I have in my firestore posts collection in a new typesense (search engine) collection. toDate(). limitToLast(2) and then invert the results from there. But when I try and OrderBy("DateCreated", Desc) which is of type timestamp I get 0 results. firestore() . The result is always giving an empty list. Add a field that has a descending value to the data. hasData condition is getting executed, Why orderBy is not working and what are the other queries that I can use to get the latest date I wanna order the questions by date, where I would like to order the questions by newest, and also the most popular. Ordering Firestore documents in descending order in Flutter? Related questions. All Firestore queries are backed by an index. I tried naming the file with a timestamp but it make the order ascending. I'm getting the results if i remove the orderBy part. You can specify the sort order for your data usingorderBy(), and you can limit the number of documents retrieved usinglimit(). I want to sort these posts in order of their timestamp(i. Firestore provides powerful query functionality for specifying which documents you want to retrieve from a collection. Sorting Firebase data. // . This value is explicitly provided when the document is written. What I intend to do is simple. image showing Cloud Firestore data viewer in the console with red circle I have stored time stamp data in firebase, I am fetching it using streams and displaying it in the latest date order in a datatable widget. . DESCENDING) method. Indexing. However, for some information, I want to sort the collection of the database after the timestamp and write out the latest event, in my case the latest temperature. Observação: os exemplos de código abrangem várias linguagens, entretanto, no texto explicativo, são feitas If you want newest documents first, you should do a DESCENDING order on timestamp. Note: While the code samples cover multiple languages, the text explaining the samples refers to the Web method names. So the best option that you have is to remove the first orderBy by call and do the first ordering on the Firestore startAfter() returning the same data in infinite scrolling when ordered by descending timestamp 0 JS Firestore 'load more' pagination ignoring startAfter() and loading old data In a collection group index, the __name__ field (which is what FieldPath. I used whereLessThanOrEqualTo("timestamp", previousOldestMessageTimestamp) but this returned 0 messages. watch (roomIdProvider); //this return the wanted [chat_room_id] print ('room updated'); print ('room is '+ room); final docRef = db. There is no way to Firestore's speed and efficiency comes almost ENTIRELY from it's use of indexes. Contributed on Dec 12 2021 . I have a database that I access through Cloud Firestore. I used . 10. Yes you need a createdAt timestamp field and use it like . between a start and end date). documents . Follow edited Aug 16, 2018 at 23:54. 0. orderBy('cartDate',descending: false) . log. Firestore - Orderby I am currently working on an blog app in which i need to filter the data according to the time, i want data's in decending order from current time but don't know which filter e. Firestore. g. A Timestamp that represens a point in time that's later than another Timestamp sorts after the second Timestamp. When you add an additional call to:. fromMillis(Date I am using Firebase Firetore in my Android chat app, and i am ordering messages by timestamp which is added as following when a new message is sent: Map<String, Object> messageMap = new Hash First, thanks you, your answer is the ONE ! If it is the first time someone use index, be careful to use the same ordering in your code. so i make a correction in query. You can use Firestore. Using firestore v9 I faced up with 1 problem. var ref = firestore(). It works fine so far if I address the link hard. typesense allows you to perform more advanced queries like combining "where" and sorting, which I needed. db. McBurd. Documentation can be seen here I am trying to create a paginated query where the results are returned in descending order on the timestamp field of my Firestore collection. On each document within the Firestore collection, I have a "createdAt" field followed by a timestamp. Store an inverted value in a property, and order on that. collection('users'). Meaning that you define the field name that will be used in the orderBy clause, not the startAfter, and both should be used together. When I try orderBy timestamp (which is set manually in Firestore so I am not doing it client-side) is not fetching anything. (collection(database, 'cases'), orderBy("timestamp")) // orderBy("timestamp", "desc") for ordering in descending order ); Checkout the documentation for more information. After that, I tried using . ewqns mtsli wmsigd fepbq ijjglp erwd ukvyd lqwt igasei koerul

Firestore order by timestamp descending. Order Firestore data by TimeStamp in Ascending order.

Follow us