pouchdb | : koala : - PouchDB is a pocket-sized database | Database library

 by   pouchdb JavaScript Version: 8.0.1 License: Apache-2.0

kandi X-RAY | pouchdb Summary

kandi X-RAY | pouchdb Summary

pouchdb is a JavaScript library typically used in Database applications. pouchdb has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i pouchdb-adapter-localstorage' or download it from GitHub, npm.

[PouchDB] – The Database that Syncs!.

            kandi-support Support

              pouchdb has a medium active ecosystem.
              It has 15771 star(s) with 1465 fork(s). There are 278 watchers for this library.
              It had no major release in the last 12 months.
              There are 48 open issues and 4154 have been closed. On average issues are closed in 80 days. There are 31 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of pouchdb is 8.0.1

            kandi-Quality Quality

              pouchdb has 0 bugs and 0 code smells.

            kandi-Security Security

              pouchdb has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              pouchdb code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              pouchdb is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              pouchdb releases are available to install and integrate.
              Deployable package is available in npm.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed pouchdb and discovered the below as its top functions. This is intended to give you an instant insight into pouchdb implemented functionality, and help decide if they suit your requirements.
            • Wrap codeblocks with code snippets
            • Build a module .
            • Wrap the dashboard .
            • Do browserify bundle
            • Rollupup migrations .
            • Sets the equal height of code .
            • Sets all code - style attributes .
            • Start server
            • Initialize the plugin .
            • Build plugins for all plugins
            Get all kandi verified functions for this library.

            pouchdb Key Features

            No Key Features are available at this moment for pouchdb.

            pouchdb Examples and Code Snippets

            JavaScriptdot img1Lines of Code : 58dot img1License : Permissive (Apache-2.0)
            copy iconCopy
            // Options
            // emitter: Optionally pass an instance of EventEmitter for hoodieApi to use
            var db = new PouchDB('dbname')
            var api = db.hoodieApi({
              emitter: existingEventEmitter
            // all methods return promises
            api.add([object1, id2]  
            rx-pouchdb ,example
            TypeScriptdot img2Lines of Code : 58dot img2License : Permissive (Apache-2.0)
            copy iconCopy
            npm install
            npm run example
            import newRxPouchDb, { DocId, VersionedDoc } from 'rx-pouchdb/dist'
            import debug = require('debug')
            const PouchDB = require('pouchdb-browser') // no valid type definitions for TS2
            debug.enable('example:*,rx-pouchdb:*') //  
            JavaScriptdot img3Lines of Code : 52dot img3no licencesLicense : No License
            copy iconCopy
            const PouchDB = require('pouchdb')
            const password = 'extremely secure value'
            const db = new PouchDB(POUCH_PATH)
              _id: 'gay-agenda',
              type: 'queerspiracy',
              agenda: ['be gay', '  
            Add custom header when create new remote database with pouchdb
            JavaScriptdot img4Lines of Code : 4dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import * as PouchDB from 'pouchdb'; 
            import PouchDB from 'pouchdb';
            How to sync pouchdb with remote Coudant, not able to connect?
            JavaScriptdot img5Lines of Code : 14dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            const PouchDB = require('pouchdb')
            const db = new PouchDB('todos')
            const username = 'KEY'
            const password = 'PASSWORD'
            const host = 'mycloudservice.cloudant.com'
            const databaseName = 'todos'
            const remoteDB = `https://${username}:${password}
            copy iconCopy
            curl -X PUT{db_name}
            const express = require("express"),
              app = express(),
              PouchDB = require("pouchdb");
            // In the current directory, place all database files into a directory named 'databa
            Cannot save ddoc/index with pouchdb
            JavaScriptdot img7Lines of Code : 69dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            let PouchDB = require("pouchdb");
            const testUrlTemplate = "http://*";
            const doTask = async (db) => {
              await db.createIndex
            TypeError: pouchdb_1.default is not a constructor
            TypeScriptdot img8Lines of Code : 3dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            var PouchDB = require('pouchdb');
            var db = new PouchDB('my_db');
            pouchdb.find is not a function
            Lines of Code : 8dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            import PouchDB from 'pouchdb';
            import PouchdbFind from 'pouchdb-find';
            export class PouchService {
                constructor() {
            How to retrieve distinct properties of documents
            JavaScriptdot img10Lines of Code : 15dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            function map(doc) {
              if(doc.status) {
                emit(doc.status, null);
            function reduce(key, values) {
              return null;
            // PouchDB request
            return this.database.query('general/all-status', 

            Community Discussions


            Pouch DB data is not inserted in sorted order
            Asked 2022-Feb-08 at 15:56

            I am working on small form in electron and pouchdb.

            When inserting a data into db, until the ninth doc it inserting perfectly, but on 10th doc it is inserting to second position of doc instead on inserting into last

            before inserting the 10th doc



            Answered 2022-Feb-08 at 15:39

            You have an errant notion regarding document insertion, whether as if the order of insertion with respect to time matters which is to be expected from say an RDBMS like MS/SQL, or a belief that a string representation of a numeric value should be sorted according to the implied numerical value (which would be wild guessing by the db).

            As explicitly stated here, here and here, and as specified by the CouchDB documentation Collation Specification

            Comparison of strings is done using ICU which implements the Unicode Collation Algorithm, giving a dictionary sorting of keys. This can give surprising results if you were expecting ASCII ordering.

            Documents are not returned by order of insertion rather they are returned according to the collation rules applied to the document ids, and document ids are strings.

            For example you expect this ordering:

            row # id 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10

            BUT that is not according to the collation rules, which yields

            row # id 0 1 1 10 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9

            Again, it cannot be emphasized enough that the order of insertion, much less an implied numeric value, does not affect the order of results. From an RDBMS perspective it is helpful to approach _all_docs results as being ordered by an index on _id which is sorted according to collation rules (again, for strings since all _ids are of type string).

            The snippet below demonstrates this by creating 100 documents with ids ranging from 1 to 100.

            Source https://stackoverflow.com/questions/71020884


            Pouchdb pagination
            Asked 2022-Jan-21 at 19:40

            I am looking for a way to paginate in pouchdb by specifying the number of the page that I want.

            The closest example I came across is this:



            Answered 2022-Jan-21 at 19:40

            There is no easy answer to the question. A small slice from Jump to Page

            One drawback of the linked list style pagination is that you can’t pre-compute the rows for a particular page from the page number and the rows per page. Jumping to a specific page doesn’t really work. Our gut reaction, if that concern is raised, is, “Not even Google is doing that!” and we tend to get away with it. Google always pretends on the first page to find 10 more pages of results. Only if you click on the second page (something very few people actually do) might Google display a reduced set of pages. If you page through the results, you get links for the previous and next 10 pages, but no more. Pre-computing the necessary startkey and startkey_docid for 20 pages is a feasible operation and a pragmatic optimization to know the rows for every page in a result set that is potentially tens of thousands of rows long, or more.

            If you are lucky and every document has an ordered sequence number, then a view could be constructed to easily navigate pages.

            Another strategy is to precompute (preload) a range of keys, which is more reasonable but is complicated. The snippet below creates a trivial database which can be paged through via nav links.

            There are 5 documents per page, and each "chapter" has 10 pages. computePages performs the look ahead

            Source https://stackoverflow.com/questions/70803475


            How to do pagination with PouchDB using Ionic Infinite Scroll?
            Asked 2022-Jan-19 at 15:52

            Let's say I have 100 documents (Note: total of documents will definitely increase). Getting all 100 documents at once will cause performance issue so I figured that I need to do infinite scroll and display, let's say, 15 documents on first load. Every time infinite scroll is triggered, it should get another 15 documents.

            Basically, docArr.length = 100

            First load: grab docArr[0] to docArr[14]

            Trigger Infinite Scroll: grab docArr[15] to docArr[29] and so on until docArr[99] is grabbed too

            In the PouchDB FAQ on Pagination, it's stated that startkey, endkey, limit and skip need to be used.

            My document id is in the format doc-1. So I have doc-1, doc-2, doc-3, etc

            I followed the suggested method to use so my code is;



            Answered 2022-Jan-19 at 15:52

            I am not 100% clear on what is going on with the OP's code but the assumption that the response.rows of the first query to _all_docs is ordered so

            rows index id 0 doc-1 1 doc-2 2 doc-3 3 doc-4 4 doc-5 5 doc-6 6 doc-7 7 doc-8 8 doc-9 9 doc-10 10 doc-11 11 doc-12 12 doc-13 13 doc-14 14 doc-15

            is wrong. Document id's are strings and as such follow the collation rules documented at CouchDB documentation Collation Specification.

            This should be the actual sequence of document id's returned by the initial call to _all_docs according to the format of the document ids specified by the OP:

            rows index id 0 doc-1 1 doc-10 2 doc-100 3 doc-11 4 doc-12 5 doc-13 6 doc-14 7 doc-15 8 doc-16 9 doc-17 10 doc-18 11 doc-19 12 doc-2 13 doc-20 14 doc-21

            Hence the calculation of the next set of results is flawed

            Source https://stackoverflow.com/questions/70772341


            How to change the http client used by pouchDB?
            Asked 2022-Jan-14 at 14:53

            I am using PouchDB and CouchDB in an ionic application. While I can successfully sync local and remote databases on Chrome and Android, I get unauthorized error on Safari / iOS when I run the sync command. Below is a simplified version of my database service provider.



            Answered 2022-Jan-11 at 00:41

            Changing the HTTP plumbing sounds like a really bad idea - time cost, mainly - unless you just absolutely have to use sessions/cookies...If you don't, read on.

            as noted here regarding pouchDB Security, I tried using pouchdb-authentication when it was actively maintained and went another route due to multiple issues (I don't recall specifics, it was 6 years ago).

            Do note the last commit to pouchdb-authentication seems to be 3 years ago. Although inactivity is not an negative indicator on the surface - a project may have simply reached a solid conclusion - installing pouchdb-authentication yields this

            Source https://stackoverflow.com/questions/70658479


            PouchDB over HTTP disconnects on inactivity after some minutes?
            Asked 2021-Nov-13 at 18:45

            I am trying to create an application that uses PouchDB as an adapter to a CouchDB running on a server.

            Problem: After some minutes of inactivity I get the following error on trying to access the database again:

            "error": "unauthorized",
            "reason": "You are not authorized to access this db.",
            "status": 401,
            "name": "unauthorized",
            "message": "You are not authorized to access this db.",
            "docId": "category:aktien"

            My feeling is, that the HTTP-Connection between Pouch and Couch has a timeout... what can I do about that?

            I cant find a "signal" that informs me about the timeout, so I could reconnect. Is there any?

            Best Regards, Tobias



            Answered 2021-Nov-13 at 18:45

            In the settings of CouchDB you can set the session timeout... default is 10 minutes (600 s).

            Source https://stackoverflow.com/questions/69836400


            PouchDB-find automatically building selectors from variable input
            Asked 2021-Nov-02 at 16:07

            I am looking for a way to adapt query fields in the db-find selector. I need this because filters access different fields which may or may not be active all the time.

            I have tried two options, but none of them work:

            1. In the first option I tried to build the query as a string and let it be evaluated:


            Answered 2021-Nov-02 at 16:07

            Given the comments above, simply create a collection for an explicit $and

            Source https://stackoverflow.com/questions/69799338


            PouchDB-find with multi-layer document
            Asked 2021-Oct-25 at 18:12

            I have asked the following question on the CouchDB Github Repo, where it was suggested to me to ask it here on Stackoverflow instead.

            Suppose we have a couchdb document structured like this:



            Answered 2021-Oct-25 at 18:12

            A brute force way is to create an index for properties

            Source https://stackoverflow.com/questions/69707954


            Promises Puzzles
            Asked 2021-Oct-15 at 15:29

            I was reading on a blog about Promises and they show a problem that I don´t get at all. The blog is: https://pouchdb.com/2015/05/18/we-have-a-problem-with-promises.html.

            The writer presents 4 puzzles with a grafical solution:

            Puzzle #1



            Answered 2021-Oct-15 at 14:03

            Puzzle #1 and #4 as well as Puzzle #2 and #3 are the same.

            In your Puzzle #2, you start another Promise and return instantly, without awaiting it. So your finalHandler will get called immediately after doSomethingElse was started, not after it is finished. If you want that, use your Puzzle #1

            In your Puzzle #3, you pass the started Promise returned by doSomethingElse() directly instead of telling js to call that function if doSomething resolved. If you want do do so, write it like that - it might help to avoid confusion

            Source https://stackoverflow.com/questions/69585736


            How to wait on promises in loop before returning?
            Asked 2021-Oct-14 at 18:42

            I'm working on a project where I need to loop through multiple values and then count the number of items in a database that match those values. The results are then returned.

            Here is the code I am wanting to run:



            Answered 2021-Oct-14 at 18:42

            "SyntaxError: await is only valid in async function"

            The error can be fixed by making sure you're doing this in an async function.

            Source https://stackoverflow.com/questions/69575777


            Relational pouch methods aren't available in Angular Service
            Asked 2021-Oct-12 at 16:12

            I'm trying to get relational-pouch working, I'm able to set the schema but when I call the save function I get the error TypeError: this.rel.save is not a function

            This is the setup:



            Answered 2021-Oct-12 at 16:12

            You're not using the rel field as advertised. From the type declaration rel is defined as

            Source https://stackoverflow.com/questions/69536115

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


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            Install pouchdb

            You can install using 'npm i pouchdb-adapter-localstorage' or download it from GitHub, npm.


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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