Module: Acl9::ModelExtensions::ClassMethods

Defined in:
lib/acl9/model_extensions.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_authorization_object(options = {}) ⇒ Object

Add role query and set methods to the class (making it an auth object class).

Examples:

class Product < ActiveRecord::Base
  acts_as_authorization_object
end

product = Product.new
product.accepted_roles #=> returns Role objects, associated with the product
product.users          #=> returns User objects, associated with the product
product.accepts_role!(...)
product.accepts_no_role!(...)
# other functions from Acl9::ModelExtensions::Object are made available

Parameters:

  • options (Hash) (defaults to: {}) —

    the options for tuning

Options Hash (options):

  • :subject_class_name (String) — default: Acl9::config[:default_subject_class_name] —

    Subject class name (e.g. ‘User’, or ‘Account)

  • :role_class_name (String) — default: Acl9::config[:default_role_class_name] —

    Role class name (e.g. ‘AccountRole’)

See Also:



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# File 'lib/acl9/model_extensions.rb', line 67

def acts_as_authorization_object(options = {})
  subject = options[:subject_class_name] || Acl9::config[:default_subject_class_name]
  subj_table = subject.constantize.table_name
  subj_col = subject.underscore

  role       = options[:role_class_name] || Acl9::config[:default_role_class_name]
  role_table = role.constantize.table_name

  sql_tables = <<-EOS
    FROM #{subj_table}
    INNER JOIN #{role_table}_#{subj_table} ON #{subj_col}_id = #{subj_table}.id
    INNER JOIN #{role_table}               ON #{role_table}.id = #{role.underscore}_id
  EOS

  sql_where = <<-'EOS'
    WHERE authorizable_type = '#{self.class.base_class.to_s}'
    AND authorizable_id = #{id}
  EOS

  has_many :accepted_roles, :as => :authorizable, :class_name => role, :dependent => :destroy

  has_many :"#{subj_table}",
    :finder_sql  => ("SELECT DISTINCT #{subj_table}.*" + sql_tables + sql_where),
    :counter_sql => ("SELECT COUNT(DISTINCT #{subj_table}.id)" + sql_tables + sql_where),
    :readonly => true

  include Acl9::ModelExtensions::Object
end

#acts_as_authorization_role(options = {}) ⇒ Object

Make a class an auth role class.

You’ll probably never create or use objects of this class directly. Various auth. subject and object methods will do that for you internally.

Examples:

class Role < ActiveRecord::Base
  acts_as_authorization_role
end

Parameters:

  • options (Hash) (defaults to: {}) —

    the options for tuning

Options Hash (options):

  • :subject_class_name (String) — default: Acl9::config[:default_subject_class_name] —

    Subject class name (e.g. ‘User’, or ‘Account)

  • :join_table_name (String) — default: Acl9::config[:default_join_table_name] —

    Join table name (e.g. ‘accounts_account_roles’)

See Also:



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# File 'lib/acl9/model_extensions.rb', line 119

def acts_as_authorization_role(options = {})
  subject = options[:subject_class_name] || Acl9::config[:default_subject_class_name]
  join_table = options[:join_table_name] || Acl9::config[:default_join_table_name] ||
               join_table_name(undecorated_table_name(self.to_s), undecorated_table_name(subject))

  has_and_belongs_to_many subject.demodulize.tableize.to_sym,
    :class_name => subject,
    :join_table => join_table

  belongs_to :authorizable, :polymorphic => true
end

#acts_as_authorization_subject(options = {}) ⇒ Object

Add #has_role? and other role methods to the class. Makes a class a auth. subject class.

Examples:

class User < ActiveRecord::Base
  acts_as_authorization_subject
end

user = User.new
user.roles             #=> returns Role objects, associated with the user
user.has_role!(...)
user.has_no_role!(...)

# other functions from Acl9::ModelExtensions::Subject are made available

Parameters:

  • options (Hash) (defaults to: {}) —

    the options for tuning

Options Hash (options):

  • :role_class_name (String) — default: Acl9::config[:default_role_class_name] —

    Class name of the role class (e.g. ‘AccountRole’)

  • :join_table_name (String) — default: Acl9::config[:default_join_table_name] —

    Join table name (e.g. ‘accounts_account_roles’)

See Also:



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# File 'lib/acl9/model_extensions.rb', line 33

def acts_as_authorization_subject(options = {})
  role = options[:role_class_name] || Acl9::config[:default_role_class_name]
  join_table = options[:join_table_name] || Acl9::config[:default_join_table_name] ||
              join_table_name(undecorated_table_name(self.to_s), undecorated_table_name(role))

  has_and_belongs_to_many :role_objects, :class_name => role, :join_table => join_table

  cattr_accessor :_auth_role_class_name
  self._auth_role_class_name = role

  include Acl9::ModelExtensions::Subject
end