Mysql2::Error: Duplicate entry for key Ÿ?? ActiveRecord::RecordNotUnique not catching error?

Mysql2::Error: Duplicate entry for key Ÿ?? ActiveRecord::RecordNotUnique not catching error? References

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1. ruby on rails - Mysql2::Error: Duplicate entry for key ...

   Mysql2::Error: Duplicate entry for key â€" ActiveRecord::RecordNotUnique not catching error? up vote 0 down vote favorite. 1.

   stackoverflow.com/questions/15256665/​mysql2error... - Cached
   

2. ruby on rails - ActiveRecord::RecordNotUnique (PG::Error ...

   ActiveRecord::RecordNotUnique (PG::Error: ... Mysql2::Error: Duplicate entry for key â€" ActiveRecord::RecordNotUnique not catching error? 0.

   stackoverflow.com/questions/10149727/​activerecordrecord... - Cached