我想在接口表中禁止5列的非唯一组合。 例如对于以下列:
:case_number, :client_name, :matter_name, :country, :engagement_code,
these rows should be allowed:
1,1,1,1,1
1,1,1,1,1
1,1,1,1,1
and these rows should not be allowed:
1,2,1,1,1
2,3,1,1,1
1,1,4,5,1
答案 0 :(得分:0)
我明白了:
在模型中添加:
validate :non_unique_combination?
def non_unique_combination?
if EvidenceImportInterface.count > 0 and
!(EvidenceImportInterface.exists?(:case_number => self.case_number,
:client_name => self.client_name,
:matter_name => self.matter_name,
:country => self.country,
:engagement_code => self.engagement_code))
errors.add(:case_number,'Combination not valid')
end
end