Easy as pie

A little Rails wrapper for treeview which adds the assets to the asset pipeline and adds some useful Rails helpers.

Usage

In Gemfile:

gem 'rails_treeview'

Configuration

In application.css manifest file:

/*
 * require rails-treeview
*/

Using Compass, f.ex in application.css.scss.erb

@import 'rails-treeview';

In application.js manifest file:

//= require rails-treeview

Optionally include excanvas as well, which can be used if/when canvas is not available!

Rails treeview

Rails treeview is a jQuery plugin that uses the canvas element to render simple treeview for single values. These chars are highly customizable and very easy to implement.

Get started

Follow Configuration instructions above and also include jQuery 1.7+.

Add the treeview element to your site to represent treeview:

<div class="treeview"></div>

The engine adds a view helper rails_treeview(percent, label = nil) to all Rails views ;) Use as follows

Simple HAML example:

= rails_treeview 73

ERB examples:

Or with a custom label:

<%= rails_treeview (6/24.0 * 100), '6 done' %>

Customize div options, fx css class:

<%= rails_treeview (6/24.0 * 100), '6 done', :class => 'treeview' %>

Finally you have to initialize the plugin with your desired configuration:

$(document).ready(function() {
    $('.treeview').treeview({
        //your configuration goes here
    });
});

Configuration parameter

You can pass a set of these options to the initialize function to set a custom behaviour and look for the plugin.

Property (Type) Default Description
barColor #ef1e25 The color of the circular bar. You can pass either a css valid color string like rgb, rgba hex or string colors. But you can also pass a function that accepts the current percentage as a value to return a dynamically generated color.
trackColor #f2f2f2 The color of the track for the bar, false to disable rendering.
scaleColor #dfe0e0 The color of the scale lines, false to disable rendering.
lineCap round Defines how the ending of the bar line looks like. Possible values are: butt, round and square.
lineWidth 3 Width of the bar line in px.
size 110 Size of the treeview in px. It will always be a square.
animate false Time in milliseconds for a eased animation of the bar growing, or false to deactivate.
onStart $.noop Callback function that is called at the start of any animation (only if animate is not false).
onStop $.noop Callback function that is called at the end of any animation (only if animate is not false).

Public plugin methods

If you want to update the current percentage of the a treeview, you can call the `update method. The instance of the plugin is saved in the jQuery-data.

Contributing to rails_treeview

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  • Fork the project.
  • Start a feature/bugfix branch.
  • Commit and push until you are happy with your contribution.
  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  • Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.