Simple rails gem for basic role authorization with ruby on rails.
gem install platform45-easy_roles --source http://gems.github.com or it can be installed as a rails plugin.
Add the following to your enviroment.rb in the rails initializer block
config.gem 'platform45-easy_roles', :lib => 'easy_roles', :source => 'http://gems.github.com'
Firstly you need to add a “roles” column to your users model, and set the default value to “— ”. Please note you can call this column anything you like, I like to use the name “roles”.
t.string :roles, :default => "--- "
Then you need to add “easy_roles :column_name” to your model.
class User < ActiveRecord::Base easy_roles :roles end
And thats it.
Easy roles extends your model, and adds a few methods needed for basic role authorization.
adding a role to a user
removing a role from a user
check to see if a user has a certain role
has_role? 'role' # or is_role? # role being anything you like, for example 'is_admin?' or 'is_awesome?'
@user = User.first @user.add_role 'admin' @user.is_admin? => true @user.has_role? 'admin' => true @user.is_awesome? => false @user.add_role 'awesome' @user.is_awesome? => true @user.remove_role 'admin' @user.is_admin? => false etc etc
There are many ways to implement views for specific roles, so I did not specifically supply one. Here's an example on what you could do:
class ApplicationController < ActionController::Base def admin_required unless current_user && current_user.is_admin? flash[:error] = "Sorry, you don't have access to that." redirect_to root_url and return false end end end
Then in your AdminsController or any controller that you only want admins to view:
class AdminsController < ApplicationController before_filter :admin_required end class MarksController < ApplicationController before_filter :admin_required, :only => :create, :update end
check out blog.platform45.com/2009/10/06/howto-basic-roles-for-users for implementation!
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