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hugohernani/ar_model_required_attrs.rb

Created March 11, 2016 17:47
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Get Attributes which presence validator was added to a model_(instance|klass)
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ar_model_required_attrs.rb
def required_attributes(obj)
target = obj.class == Class ? obj : obj.class
target.validators.select do |amv|
amv.class == ActiveRecord::Validations::PresenceValidator
end.map(&:attributes).flatten
end
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It does not work if the attribute is using a presence validator under certain conditional

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