Im working away on ActiveJquery, and the next thing on the list, is to add support for relationships. This gets to be really interesting, because your Inside the box, in a plugin, and you need to know what associations the user has
defined.

I was scanning the documentation, and looking around for the api to find the information.

After searching for a while, I discovered railway, a gem for rails that does diagraming of rails models using dot. So grab the gem, and look thru the source.

So the key to finding associations is:

@associations = table.reflect_on_all_associations

This results in:

@associations=
  [#ActiveRecord::Reflection::AssociationReflection:0x26305cc
    @active_record=
     Company(id: integer, name: string, location_id: integer, created_at: datetime, updated_at: datetime),
    @macro=:has_many,
    @name=:user,
    @options={:extend=>[]}>,
   #
    @active_record=
     Company(id: integer, name: string, location_id: integer, created_at: datetime, updated_at: datetime),
    @macro=:has_many,
    @name=:location,
    @options={:extend=>[]}>,
   #
    @active_record=
     Company(id: integer, name: string, location_id: integer, created_at: datetime, updated_at: datetime),
    @macro=:has_many,
    @name=:division,
    @options={:extend=>[]}>],

From my models:

class Company < ActiveRecord::Base
  has_many :user
  has_many :location
  has_many :division
  
end
class Department < ActiveRecord::Base
      belongs_to :division
end
class Division < ActiveRecord::Base
belongs_to :company
end
class Location < ActiveRecord::Base
end
class User < ActiveRecord::Base
end