PouchDB Getting Started Guide

jieforest

Implement basic two way sync
Now we will have the todo list sync. Back in app.js we need to specify the address of the remote database. Remember to replace user, pass and myname.iriscouch.com with the credentials of your own CouchDB instance:

1. // EDITING STARTS HERE (you dont need to edit anything above this line)
   
2. 
   
3. var db = new PouchDB('todos');
   
4. var remoteCouch = 'http://user:pass@mname.iriscouch.com/todos';

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jieforest

Then we can implement the sync function like so:

1. function sync() {
   
2.   syncDom.setAttribute('data-sync-state', 'syncing');
   
3.   var opts = {live: true};
   
4.   db.replicate.to(remoteCouch, opts, syncError);
   
5.   db.replicate.from(remoteCouch, opts, syncError);
   
6. }

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db.replicate() tells PouchDB to transfer all the documents to or from the remoteCouch. This can either be a string identifier or a PouchDB object. We call this twice: once to receive remote updates, and once to push local changes. Again, the live flag is used to tell PouchDB to carry on doing this indefinitely. The callback will be called whenever this finishes. For live replication, this will mean an error has occured, like losing your connection or you canceled the replication.

You should be able to open the todo app in another browser and see that the two lists stay in sync with any changes you make to them. You may also want to look at your CouchDB's Futon administration page and see the populated database.

jieforest

Congratulations!

You've completed your first PouchDB application. This is a basic example, and a real world application will need to integrate more error checking, user signup, etc. But you should now understand the basics you need to start working on your own PouchDB project. If you have any more questions, please get in touch on IRC or the mailing list.