Numbers with either comma or dot as separator : handle in front or back ?

Hi

My app is used by users that are either using comma or dot as a decimal separator.

The laravel backend is expecting a DOT as a number separator, because of "number" rule in form requests, and because of mysql.

The frontend is a Vue SPA app.

I've tried to change the validator rule so numbers are both accepted as "dot" or "comma" serapated, but then the DB complains about comma numbers !

So, I was wondering what should be the best practice : should the frontend ensure that numbers containing comma are replaced with dots before sending the SAVE call, or should it be handled on backend ? submitted by /u/Napo7
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