Limit By Scope Rails Plugin
I’m pleased to announce the release of the LimitByScope plugin, the second package in the Software as a Service project.
From the README:
This plugin adds class limit, available, and capacity methods to enforce quota limits on the creation of models. The plugin is primarily for use with the acts_as_scoped plugin (part of the saas project) because it otherwise enforces a flat limit on the creation of limited models. If used with the acts_as_scoped plugin you can lock users to a scope such as host or domain then ensure they can only create the number object within their plan. The Usage section below should explain a little better.
Documentation
http://saas.rubyforge.org/limit_by_scope
Rubyforge Project
http://rubyforge.org/projects/saas
Usage
# plan attributes:
# - name
# - price
# - item_limit
class Plan < ActiveRecord::Base
has_many :hosts
end
# host attributes:
# - name
# - plan_id
class Host < ActiveRecord::Base
cattr_accessor :current
belongs_to :plan
end
# item attributes
# - name
# - host_id
class Item < ActiveRecord::Base
limit_by_scope :host, :delegate => :plan, :error => 'Quota met: #{self.class.limit}, please upgrade your plan to add more.'
belongs_to :host
end
# for best results, use with acts_as_scoped like so:
class Item < ActiveRecord::Base
acts_as_scoped :host
limit_by_scope :host, :delegate => :plan, :error => 'Your service tier only allows #{self.class.limit}, please <a href=\"/upgrade?id=#{self.host.id}\">upgrade</a> your plan to add more.'
belongs_to :host
end
class ApplicationController < ActionController::Base
...
before_filter :current_host
def current_host
Host.current = Host.find_by_name(request.subdomains.first)
redirect_to('/not_found.html') and return false if Host.current.nil?
end
...
Installation
script/plugin install svn://rubyforge.org/var/svn/saas/limit_by_scope/trunk/limit_by_scopeSoftware as a Service
The plugin is part of the Software as a Service project on Rubyforge. You can use this plugin in conjunction with something similar to the userstamp plugin to automagically limit the scope of your find, calculate, save, delete methods. It is used with other plugins as a drop in that will allow you to turn just about any rails application into a software as a service.
Acts As Scoped Rails Plugin
I’m pleased to announce the public availability of the acts_as_scoped plugin.
From the README:
This plugin wraps find in a scope based on a persistent variable. This enables you to use something like the userstamp plugin to ensure a model’s find method returns objects scoped within the current user.
Documentation
http://saas.rubyforge.org/acts_as_scoped
Rubyforge Project
http://rubyforge.org/projects/saas
Usage
# You'll need to add a user_id column to the sandwiches table
class Sandwich < ActiveRecord::Base
acts_as_scoped :user # belongs_to is included
end
class User < ActiveRecord::Base
cattr_accessor :current
has_many :sandwiches
end
class ApplicationController < ActionController::Base
...
before_filter :current_user
def current_user
User.current = User.find(session[:user_id]) unless session[:user_id].blank?
end
...
Installation
script/plugin install svn://rubyforge.org/var/svn/saas/acts_as_scoped/trunk/acts_as_scoped
Software as a Service
The plugin is part of the Software as a Service project on Rubyforge. You can use this plugin in conjunction with something similar to the userstamp plugin to automagically limit the scope of your find, calculate, save, delete methods. It is used with other plugins as a drop in that will allow you to turn just about any rails application into a software as a service.
