Hi guys,

I'm working on something like AirBnB but much simpler. I want to hint
user whenever he/she tries to submit duplicate entry.

Currently, my model looks like:

House {
Id
Username
Address
State
Country
}

The id is made of address+state+country MD5. Is this the "correct" way
to do it? Or, should I go with auto-generated Id and add extra field
named 'hash', or how?




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