tnederlof
Phone Number Form Validation
I have several forms where I want to save the phone numbers of users. In the actual database the field is a string and I would like to save in +160277688 format where 1 is country code, then area code then the number.
When I think about user inputs and enforce via my change set and form itself, I am debating how much logic goes into the change set versus closer to the form itself. Has anyone tackled phone numbers and wanted to save in a particular format?
First Post!
LostKobrakai
Personally I feel there are a few ways to go about this depending on how needs to work with the data.
- Only used by real people: Store the number as supplied as string.
- Used by people, but format enforced: Use e.g. a regex to enforce the format, but don’t expect it to be perfect.
- Just not just by people: Store the input, but also normalized forms / parts e.g. by using libphonenumber
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f0rest8
Might not need this anymore, but in this thread I mention a new guide I just wrote where I use ex_phone_number to handle international phone number validations and formatting in a Live View.
Hope it helps 
dimitarvp
thinkingcat
This might really help you @tnederlof. It uses the ex_phone_number library and creates a custom type for casting the e164 phone number into Ecto. See the cast function:
I am working on a similar issue, no affiliation with them, just found this gem! Many thanks to them 
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