的Rails：显示验证独特性，当复制

Question

我有一个验证它的蛞蝓都是独一无二的，像这样一个Rails模型：

validates_uniqueness_of :slug 

批量导入过程中，我获得了大量的验证失败，并有屏幕错误是这样的：

ERROR: invalid() - Validation failed: Slug has already been taken 
ERROR: invalid() - Validation failed: Slug has already been taken 
ERROR: invalid() - Validation failed: Slug has already been taken 
... 

我想有错误消息显示哪些slugs失败验证。如何才能做到这一点？

Answer 1

validates :slug, uniqueness: { message: "%{value} has already been taken" } 

如果这是在一个日志中，但我想你会写一个自定义验证并记录在那里。