level-reactive

Reactive templating of data stored in a LevelDB.

level-reactive

Reactive templating for data stored in a LevelDB.

Given this data stored in a leveldb:

user = juliangruber
messages!1 = oh hai
messages!2 = what's up
messages!3 = rad!

And this html template:

<div>
  <p data-key="user"></p>
  <div data-each="messages">
    <p data-text="body"></p>
  </div>
</div>

Write this code to bind those two together:

var levelup = require('levelup');
var leveljs = require('leveljs');
 
var db = levelup('my-db', { db: leveljs });
require('./reactive')(db);
 
function UserView (user) {
  this.user = user;
  this.el = domify('...the template...');
  reactive(this.el, user, this);
 
  setInterval(function () {
    db.put('user', Math.random().toString(16).slice(2));
  }, 1000);
}
 
var user = new UserView();
document.body.appendChild(view.el);

And the resulting DOM will be:

<div>
  <p data-key="user">juliangruber</p>
  <div>
    <p data-text="body">oh hai</p>
    <p data-text="body">what's up</p>
    <p data-text="body">rad!</p>
  </div>
</div>

Update the template just by working with the database:

db.put('user', 'mbalho');
db.put('messages!4', 'oh!');
  • Make reactive browserify compatible so it can just be required.
  • Clean up templates.
  • Handle delete events in live streams.
  • Set up requirebin example.

First source the standalone reactive build from https://raw.github.com/component/reactive/master/reactive.js:

<script src="/path/to/reactive.js"></script>

With npm do:

npm install level-reactive

Then, bundle for the browser using browserify.

(MIT)

Copyright (c) 2013 Julian Gruber <julian@juliangruber.com>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.