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Doing ActiveRecord Calculations Like Average On Encrypted Fields? #393

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dalezak opened this issue Jul 6, 2021 · 0 comments
Open

Doing ActiveRecord Calculations Like Average On Encrypted Fields? #393

dalezak opened this issue Jul 6, 2021 · 0 comments

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@dalezak
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dalezak commented Jul 6, 2021 •
edited

Is it possible to do Rails calculations like average on encrypted fields?

Answer.average(:encrypted_value)

Or do you need to retrieve all values and then calculate the average in Ruby?

answers = Answer.all.map{|a| a.value.to_i}
answers.sum.to_f / answers.size.to_f

This obviously isn't very efficient so wondering if there's a better option.

Should I consider dropping the encryption? Any guidance would be greatly appreciated! 🙏
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@dalezak