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# File 'lib/composite_primary_keys/validations/uniqueness.rb', line 4
def validate_each(record, attribute, value)
finder_class = find_finder_class_for(record)
value = map_enum_attribute(finder_class, attribute, value)
relation = build_relation(finder_class, attribute, value)
if record.persisted?
if finder_class.primary_key.is_a?(Array)
predicate = finder_class.cpk_id_predicate(finder_class.arel_table, finder_class.primary_key, record.id_in_database || record.id)
relation = relation.where.not(predicate)
elsif finder_class.primary_key
relation = relation.where.not(finder_class.primary_key => record.id_in_database)
else
raise UnknownPrimaryKey.new(finder_class, "Can not validate uniqueness for persisted record without primary key.")
end
end
relation = scope_relation(record, relation)
relation = relation.merge(options[:conditions]) if options[:conditions]
if relation.exists?
error_options = options.except(:case_sensitive, :scope, :conditions)
error_options[:value] = value
record.errors.add(attribute, :taken, **error_options)
end
end
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