mirror of
https://github.com/codeninjasllc/discourse.git
synced 2024-12-20 20:42:44 -05:00
22 lines
721 B
Ruby
22 lines
721 B
Ruby
|
class UniqueAmongValidator < ActiveRecord::Validations::UniquenessValidator
|
||
|
|
def validate_each(record, attribute, value)
|
||
|
|
old_errors = record.errors[attribute].size
|
||
|
|
|
||
|
|
# look for any duplicates at all
|
||
|
|
super
|
||
|
|
|
||
|
|
new_errors = record.errors[attribute].size - old_errors
|
||
|
|
|
||
|
|
# do nothing further unless there were some duplicates.
|
||
|
|
unless new_errors == 0
|
||
|
|
# now look only in the collection we care about.
|
||
|
|
dupes = options[:collection].call.where("lower(#{attribute}) = ?", value.downcase)
|
||
|
|
dupes = dupes.where("id != ?", record.id) if record.persisted?
|
||
|
|
|
||
|
|
# pop off the error, if it was a false positive
|
||
|
|
record.errors[attribute].pop(new_errors) unless dupes.exists?
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|