model a:

has_many :b, :dependent => :delete_all

model b:

belongs_to :a
belongs_to :c

model c:

has_many :b

When I delete an a, I would also like to have children b's deleted so that they get removed from any c's that may reference them. However, the above isn't working. I'd appreciate any help.

ruby-on-rails activerecord associations cascade
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