Ruby Sequel model to have validation for create and not update -



Ruby Sequel model to have validation for create and not update -

how can avoid having validation update while having create? instance:

i wish have image field have presence validation on create. want avoid in edit , assume previous value in case of no change.

note: using padrino.

in sequel, validations done @ instance level using validation_helpers plugin. utilize standard ruby conditional if want validate new objects , not existing ones:

plugin :validation_helpers def validate super validates_presence :image if new? end

ruby sequel

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