With ActiveRecord has_many through relationships, how do I remove associations when saving objects

Question

In Rails, how do you remove the has-many association through a link while preserving previously related objects? Is there an ActiveRecord way to do this or do I need to write SQL?

Is it also possible for objects to remain friends after the relationship is gone? [<- lame joke attempt]

Answer 1

Found it myself. collections.delete and just make sure that dependents are not set to delete or destroy. For some reason, asking a question in public seems to lead to the fact that I get an answer after 10 minutes on my own.

Answer 2

-, , , 10 .

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Answer 3

Class A  < ActiveRecord::Base
  has_many :b
end

Class B  < ActiveRecord::Base
  belongs_to :a
end

Abdelete - removes an association

Abdestroy - removes the association of associated objects (b)