Firebase Collection is a simple library that wraps the Firebase API in reactive LocalCollections. This allows developers to use the familiar Minimongo API with a Firebase backend, on the server as well as the client.
This package is still in early development, use with caution in production environments!
In order to make the transition between MongoDB and Firebase as easy as possible, I decided to only support a particular subset of Firebase: Lists of objects. This means that a FirebaseCollection always has to be a reference to a list of data. FirebaseCollection will transparently add an _id attribute to every child, containing the index of the child. This allows for matching behaviour with MongoDB collections.
Your Firebase list therefore corresponds to a MongoDB collection, whereas every child of the Firebase list corresponds to a MongoDB document. Here's an example of a list of users:
// You can create a new Firebase Collection very similar to the original Firebase API:
Users = new FirebaseCollection(YOUR_FIREBASE_REFERENCE_URL);
// FirebaseCollections support most of the regular LocalCollection API:
var allFoobars = Users.find({ name: 'Foo Bar' }).fetch();
var oneFoobar = Users.findOne({ name: 'Foo Bar' });
var newFoobarId = Users.insert({ name: 'Foo Bar' });
var foobarChanged = Users.update({ name: 'Foo Bar' }, { name: 'Mr. Foo Bar' }, { multi: true });
// These methods however are not supported:
// - Users.allow(...)
// - Users.deny(...)
// - Users.upsert(...)
// - Users.update(selector, modifier, { upsert: true })
// FirebaseCollections are reactive:
Deps.autorun(function () {
// This will re-run everytime the Users-collection changes:
console.log('User count: ' + Users.find({}).count());
});This package does not depend on livedata or any related packages, thus it can be used without persistent connections to the server. Be aware, though, that the default webapp package does depend on livedata, so an alternative has to be used in order to completely avoid any DDP-connection.
Firebase Collection is released under the terms of the MIT License:
The MIT License (MIT)
Copyright (c) 2014 Robert Böhm
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