Check if a model was modified or created on before_save event
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06-04-2021 - |
Question
I want to check if a model is being created in the before_save callback of Rails. I also want to check if it has been modified (when updating).
Thanks
Solution
You can use new_record?
to see if you have a brand new object and changed?
to see if anything has changed:
before_save :pancakes
def pancakes
if new_record?
# Not in the database yet.
elsif changed?
# Already exists but it has unsaved changes.
end
end
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