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# File 'lib/client_side_validations/active_record/middleware.rb', line 4
def self.is_unique?(klass, attribute, value, params)
column = klass.columns_hash[attribute.to_s]
value = column.limit ? value.to_s.mb_chars[0, column.limit] : value.to_s if column.text?
t = klass.arel_table
if params[:case_sensitive] == 'true'
relation = t[attribute].eq(value)
else
relation = t[attribute].matches(value)
end
relation = relation.and(t[:id].not_eq(params[:id])) if params[:id]
(params[:scope] || {}).each do |key, value|
relation = relation.and(t[key].eq(value))
end
!klass.where(relation).exists?
end
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