A Rails 3/4 configuration engine. An update to Behavior for Rails 3 and 4.
How it works
Configurable lets you define app-wide configuration variables and values in
config/configurable.yml. These can then be accessed throughout your app.
If you or your app users need to change these variables, Configurable stores new values in the database.
Configurable is available as a Ruby gem. Simply add it to your Rails 3 app's
Then run the
$ rails generate configurable_engine:install
There are two parts to how configurable_engine works. First of all there is a config file, config/configurable.yml. This file controls the variables that are allowed to be set in the app.
For example, if you wanted to have access to a config variable "site_title", put this in configurable.yml:
site_title: name: Site Title default: My Site # type: String is the default
Now, within your app, you can access
Configurable.site_title if you prefer).
Since Configurable is an ActiveRecord model, if you want to update the config, create a Configurable record in the database:
.create!(:name => 'site_title', :value => 'My New Site')
You can set the
type attribute to
list and it will treat those fields as those types. Lists are comma and/or newline delimeted arrays of strings.
Configurable comes with a web interface that is available to your app straight away at
If you want to add a layout, or protect the configurable controller, create
app/controllers/admin/configurables_controller.rb as such:
$ bundle exec rails generate controller admin/configurables
class Admin::ConfigurablesController < ApplicationController # include the engine controller actions include :: # add your own filter(s) / layout before_filter :protect_my_code layout 'admin' end
To ensure text areas are rendered correctly, ensure that your layout preserves whitespace. In haml, use the
%container ~ yield
If you want to control how the fields in the admin interface appear, you can add additional params in your configurable.yml file:
site_title: name: Name of Your Site # sets the edit label default: My Site # sets the default value type: string # uses input type="text" site_description: name: Describe Your Site # sets the edit label default: My Site # sets the default value type: text # uses textarea secret: name: A Secret Passphrase # sets the edit label default: passpass # sets the default value type: password # uses input type="password" Value: name: A number # sets the edit label default: 10 # sets the default value type: integer # coerces the value to an integer Price: name: A price # sets the edit label default: "10.00" # sets the default value type: decimal # coerces the value to a decimal
If you want to use rails caching of Configurable updates, simply set
config.use_cache = true
Running the Tests
The tests for this rails engine are in the
features directories. They use the dummy rails app in
From the top level run:
$ bundle exec rake app:db:schema:load $ bundle exec rake app:db:test:prepare $ bundle exec rake
All contributions are welcome. Just fork the code, ensure your changes include a test, ensure all the current tests pass and send a pull request.
Copyright (c) 2011 Paul Campbell. See LICENSE.txt for further details.