Crouton 
Context sensitive notifications for Rails && XHR.
Installation
gem install 'crouton'
Usage
Simply require crouton in your javascript and css:
//= require crouton@import 'crouton';Then, use the render_crouton method in your controllers, any option you pass
will be converted to a message.
class PostsController < ActionController::Base
def update
if @post.save
render_crouton notice: 'Saved'
else
render_crouton errors: @post.errors
end
end
endFinally, find a good spot in your HTML for the Crouton, and add the
.crouton-placeholder CSS class in the container of choice.
<div class="content crouton-placeholder">
...Customization
Three styles are supported out of the box: info, warning and danger. The duration of each message is 1500, 2000 and 3000 respectively.
You can customize the colours for this three styles by defining the following SASS variables:
$crouton-info$crouton-warning$crouton-danger
You can also create your custom messages:
render_crouton Crouton::Message.new(:hint, 'You can double tap for more info.', duration: 5000), placeholder: '.custom-crouton-placeholder'License
Copyright (c) 2014 MΓ‘ximo Mussini
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.
Credits
The name and the idea of Crouton originates in a blog article by Cyril Mottier.