Class: ActiveRecord::Base

Inherits:

Object

• Object
• ActiveRecord::Base

Defined in:

lib/associator.rb

Direct Known Subclasses

Association2, Associator::Association

Class Method Summary

• .associated(opts = {}) ⇒ Object

Class Method Details

.associated(opts = {}) ⇒ Object

# File 'lib/associator.rb', line 10

def self.associated	opts={}
	@from_type = name.downcase
	if opts[:with]
		@to_type = opts[:with].to_s.downcase
		@class_name = opts[:class_name] || false
		@table_name = @to_type.pluralize if @to_type
		@table_name = @class_name.pluralize if @class_name
		@table_name = opts[:table] if opts[:table]

		# http://stackoverflow.com/questions/8545360/finder-sql-does-not-parse-string-with-rails
		if @class_name
		  eval "
 	      has_many '#{@to_type}', :class_name => '#{@class_name}', :finder_sql => ->(record) do
 	        finder record, '#{@table_name}', '#{@from_type}', '#{@to_type}'
 	      end
 	    "
		else
		  eval "
 	      has_many '#{@to_type}', :finder_sql => ->(record) do
 	        finder record, '#{@table_name}', '#{@from_type}', '#{@to_type}'
 	      end
 	    "
		end
		eval "
 			define_method(:add_associated) do |obj|
 			  Associator::Association.create(:from => id, :from_type => '#{@from_type}', :to => obj.id, :to_type => '#{@to_type}')
 			end

 			define_method(:del_associated) do |obj|
 			  association = Associator::Association.where(:from => id, :from_type => '#{@from_type}', :to => obj.id, :to_type => '#{@to_type}')
 			  Associator::Association.destroy(association) if association && association.size == 1
 			end
		"
   end
end