level-reactive

level-reactive

Reactive templating for data stored in a LevelDB.

Usage

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

Tie them together by calling reactive on your db, template and view object.

var reactive = require('level-reactive');
var domify = require('domify');
var tmpl = '<div>\n<p db-key.....';
var levelup = require('levelup');
var memdown = function (l) { return new (require('memdown'))(l) };

var db = levelup('db', { db: memdown });

function UserView (user) {
  this.user = user;
  this.el = domify(tmpl);
  reactive(db, this.el, user, this);
}

var view = new UserView({});
document.body.appendChild(view.el);

And the resulting DOM will be:

<div>
  <p db-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!');

API

reactive(db, el, obj[, options])

Except for the first argument the same as component/reactive.

This will install level-live-stream on the source, if you didn't already do that.

TODO

• Clean up templates.
• Handle delete events in live streams.
• Set up requirebin example.

Installation

With npm do:

npm install level-reactive

Then bundle for the browser with browserify.

License

(MIT)

Copyright (c) 2013 Julian Gruber <[e-mail]>

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.