Many-to-many relationship to table itself through other table

rubyonrails-talk
1

Hello,

I would like to have many-to-many relationship to object itself with additional info, but I did not find any info on that, could someone suggest something?

Example:

Service -- name -- description

ServiceConnection -- type -- description -- parent_id -- child_id

2

Have a look at has_many :through with class_name and foreign_key. You will need two of these, one for parents and one for children. has_many :service_connections has_many :parents, :through => :service_connection, :class_name..... etc has_many :children, :through => :service_connection, :class_name..... etc

The rails guide on activerecord associations at http://guides.rubyonrails.org/ should help.

Colin

3

mxrgus pxrt wrote: