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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
24 lines
752 B
Ruby
24 lines
752 B
Ruby
# frozen_string_literal: true
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class UniqueAmongValidator < ActiveRecord::Validations::UniquenessValidator
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def validate_each(record, attribute, value)
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old_errors = record.errors[attribute].size
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# look for any duplicates at all
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super
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new_errors = record.errors[attribute].size - old_errors
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# do nothing further unless there were some duplicates.
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unless new_errors == 0
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# now look only in the collection we care about.
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dupes = options[:collection].call.where("lower(#{attribute}) = ?", value.downcase)
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dupes = dupes.where("id != ?", record.id) if record.persisted?
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# pop off the error, if it was a false positive
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record.errors[attribute].pop(new_errors) unless dupes.exists?
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end
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end
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end
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