Redux-persist: support persisting to pouchdb?

[simpzan]

Hi there, would you consider to support persisting to pouchdb.
pouchdb supports sync wonderfully.
It will be great to combine pouchdb's sync and redux-persist's local persist.

[rt2zz]

This is be a great storage engine. A cursory look at the docs https://pouchdb.com/api.html#fetch_document makes me think this will not be hard to implement, just need to conform to the expected storage api a la https://github.com/pellejacobs/redux-persist-node-storage/blob/master/src/index.ts

[rt2zz]

This could make for some really awesome features with syncing user session to a remote db or coordinating session across two remote peers

[alburdette619]

Has any work been done on this? There is a library called redux-pouchdb but it seems to be unmaintained and not currently even working.

[brandonmp]

Just looking into this myself & figured I'd share this relatively new project: https://github.com/medihack/redux-pouchdb-plus

Haven't used it but seems to take advantage of some of the synergies b/t pouch and redux

[selipso]

The most developed PouchDB library for RN seems to be https://github.com/stockulus/pouchdb-react-native but it doesn't use redux. It already handles syncing, though, with work being done on enabling attachments. Could be a good package to collaborate as it seems to have an easier API to work with.

[rt2zz]

redux-persist@5 no longer relies on getAllKeys which leads me to believe writing an adapter for pouchdb would be trivial, just need getItem, setItem, and removeItem.

[yanick]

There might be one hard thing involved in a pouchdb adapter. When a document is saved, pouchDb returns back a new copy of the doc with a new _rev (so that it'll detect if one tries to update the docs from an outdated version). But setItem has no direct way to add something to the main state...

[MuraraAllan]

Any upgrade on that? I'm starting a project that involves pouchDB + Redux and I'm highly interested in contribute with this awesome library!

I'm working on it, as the project evolves.

[MuraraAllan]

//WORK IN PROGRESS FUNCTION

import PouchDB from 'pouchdb';

function PouchDBAdapter () {
  const db = new PouchDB('anyNameYoudWant);
  const getItem = async (key) => {
    try {
      const test = await db.get(key);
      return test;
    } catch (err) {
      throw err;
    }
  };
  const setItem = async (key, value) => {
    try {
      const pouchDocument = await getItem(key);
      const localValue = { ...value };
      localValue._rev = pouchDocument._rev;
      localValue._id = pouchDocument._id;
      delete localValue._persist;
      try {
        const update = await db.put(localValue);
        localValue._rev = update.rev;
        return localValue;
      } catch(err) {
        console.log('ERROR ON UPDATE IS : ', err)
        throw err;
      }
    } catch (err) {
      const localValue = { ...value };
      localValue._id = key;
      delete localValue._persist;
      try {
        const insertRow = await db.put(localValue);
        return insertRow;
      } catch(err) {
        throw err;
      }
    }
  };
  return { getItem, setItem };
};

//WORK IN PROGRESS FUNCTION

//USAGE
const storage = new PouchDBAdapter();

const rootPersistConfig = {
key: 'root',
storage: storage,
serialize : false,
debug : true
};

[yanick]

AH! I think I got it:

https://github.com/yanick/redux-persist-pouchdb