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# == Schema Information
# Schema version: 20120919140404
#
# Table name: censor_rules
#
# id :integer not null, primary key
# info_request_id :integer
# user_id :integer
# public_body_id :integer
# text :text not null
# replacement :text not null
# last_edit_editor :string(255) not null
# last_edit_comment :text not null
# created_at :datetime not null
# updated_at :datetime not null
# regexp :boolean
#
# models/censor_rule.rb:
# Stores alterations to remove specific data from requests.
#
# Copyright (c) 2008 UK Citizens Online Democracy. All rights reserved.
# Email: hello@mysociety.org; WWW: http://www.mysociety.org/
class CensorRule < ActiveRecord::Base
belongs_to :info_request
belongs_to :user
belongs_to :public_body
# a flag to allow the require_user_request_or_public_body validation to be skipped
attr_accessor :allow_global
validate :require_user_request_or_public_body, :unless => proc{ |rule| rule.allow_global == true }
validate :require_valid_regexp, :if => proc{ |rule| rule.regexp? == true }
validates_presence_of :text
scope :global, {:conditions => {:info_request_id => nil,
:user_id => nil,
:public_body_id => nil}}
def require_user_request_or_public_body
if self.info_request.nil? && self.user.nil? && self.public_body.nil?
[:info_request, :user, :public_body].each do |a|
errors.add(a, "Rule must apply to an info request, a user or a body")
end
end
end
def require_valid_regexp
begin
self.make_regexp()
rescue RegexpError => e
errors.add(:text, e.message)
end
end
def make_regexp
return Regexp.new(self.text, Regexp::MULTILINE)
end
def apply_to_text!(text)
if text.nil?
return nil
end
to_replace = regexp? ? self.make_regexp() : self.text
text.gsub!(to_replace, self.replacement)
end
def apply_to_binary!(binary)
if binary.nil?
return nil
end
to_replace = regexp? ? self.make_regexp() : self.text
binary.gsub!(to_replace){ |match| match.gsub(/./, 'x') }
end
def for_admin_column
self.class.content_columns.each do |column|
yield(column.human_name, self.send(column.name), column.type.to_s, column.name)
end
end
def is_global?
return true if (info_request_id.nil? && user_id.nil? && public_body_id.nil?)
return false
end
end
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