Module: Authlogic::Session::Scopes::ClassMethods

Defined in:
lib/authlogic/session/scopes.rb

Overview

Scopes

Instance Method Summary collapse

Instance Method Details

#scopeObject

The current scope set, should be used in the block passed to with_scope.


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# File 'lib/authlogic/session/scopes.rb', line 19

def scope
  Thread.current[:authlogic_scope]
end

#with_scope(options = {}, &block) ⇒ Object

What with_scopes focuses on is scoping the query when finding the object and the name of the cookie / session. It works very similar to ActiveRecord::Base#with_scopes. It accepts a hash with any of the following options:

  • find_options: any options you can pass into ActiveRecord::Base.find. This is used when trying to find the record.

  • id: The id of the session, this gets merged with the real id. For information ids see the id method.

Here is how you use it:

UserSession.with_scope(:find_options => {:conditions => "account_id = 2"}, :id => "account_2") do
  UserSession.find
end

Eseentially what the above does is scope the searching of the object with the sql you provided. So instead of:

User.find(:first, :conditions => "login = 'ben'")

it would be:

User.find(:first, :conditions => "login = 'ben' and account_id = 2")

You will also notice the :id option. This works just like the id method. It scopes your cookies. So the name of your cookie will be:


instead of:

user_credentials

What is also nifty about scoping with an :id is that it merges your id's. So if you do:

UserSession.with_scope(:find_options => {:conditions => "account_id = 2"}, :id => "account_2") do
  session = UserSession.new
  session.id = :secure
end

The name of your cookies will be:


Raises:

  • (ArgumentError)

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# File 'lib/authlogic/session/scopes.rb', line 61

def with_scope(options = {}, &block)
  raise ArgumentError.new("You must provide a block") unless block_given?
  self.scope = options
  result = yield
  self.scope = nil
  result
end