Phone number constraint

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1

Hi All,

I want your advice on putting a constraint on integer field to limit it to 10 digits and accept 077/078/079 in the beginning like (0772314223) or (078121324) or (0799124355)

Please Advice,

2

Try this:

constraint="regex(., '^07[7|8|9][0-9]{7}$')"

See Regular Expressions for details, and/or have a play around with regex's on https://regex101.com/ :slight_smile:

Description:

  • ^ asserts position at start of a line
  • 07 matches the characters 07 literally (case sensitive)
  • Match a single character present in the list below [7|8|9]
    7|8|9 matches a single character in the list 7|89 (case sensitive)
  • Match a single character present in the list below [0-9]{7}
    {7} Quantifier — Matches exactly 7 times
    0-9 a single character in the range between 0 (index 48) and 9 (index 57) (case sensitive)
  • $ asserts position at the end of a line
2 Likes
3

Hello guys
I have tried all your constraints concerning limiting the phone number digits to 10 but i hav failed. Ineed your help please🙏

4

hello @Joseph_Mugisha
use regex(., ‘^[0-9]{10}$’) on your constraints

2 Likes
5

Thank u it worked man

6

One way to do this is to use regular expressions in your code to validate the input.

7

You can use a regular expression like ""^(077|078|079)\d{7}$"" to match phone numbers starting with the specified prefixes and having 7 digits after that. It would ensure that only valid phone numbers are accepted in your integer field.