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Ruby On Rails MCQs

What is the difference between :dependent => :destroy and :dependent => :delete_all in Rails?

There is no difference between the two; :dependent => :destroy and :dependent => :delete_all are semantically equivalent.

In :destroy, associated objects are destroyed alongside the object by calling their :destroy method, while in :delete_all, they are destroyed immediately, without calling their :destroy method.

In :delete_all, associated objects are destroyed alongside the object by calling their :destroy method, while in :destroy, they are destroyed immediately, without calling their individual :destroy methods.

None of these.

Answer

Correct Answer: In :destroy, associated objects are destroyed alongside the object by calling their :destroy method, while in :delete_all, they are destroyed immediately, without calling their :destroy method.

Explanation:

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