How to do input validation?

General
1

Guys, I'm just learning, please tell me how can I check the input data? I need to check the input data, whether the phone number is correct according to the following parameters:

  • format is "380..."
  • only numbers
  • number length 12 digits

and if the data is correct, then I pass the information to the next process.

Which node can solve this problem? I tried through the switch, but I didn’t get anything :frowning: Tell me where you can at least see examples.

2

Hi and welcome.

The switch will work if you set a match regex ^380\d{9}$
^startof string
\d any digit
{9} 9 times
$ end of string

1 Like
3

Thanks a lot!
where should it be written?(
And is it possible to solve this problem in any other way?

4

In the input field once you select match regex in he dropdown selection box, in the rules section.

Yes many ways, you could do it in a function node with javascript, and there are contrib nodes for validating input/json/xml/etc.
https://flows.nodered.org/search?term=validate

5

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