Regex validation rule not working as expected

[pareeohnos]

I'm having an unusual issue with a regex validation rule. It seems to work in some cases, however I'm trying to use it to validate a date however it's saying that the date is not valid, even though it is.

http://jsfiddle.net/efp8z6Ln/260/

This fiddle shows an input field with a valid date value being validated using a regex. The regex itself works as demonstrated, and matches what it should, yet the form validation still returns false.

[elbouillon]

I'm also having an issue with regexp validation.

This regexp : regExp[/^+[0-9]{11}$/]
Don't validate +41791234567

I have that message in web console :
Uncaught SyntaxError: Invalid regular expression: /^+[0-9]{11}$/: Nothing to repeat

I think that your unvalid form is not due to your regexp but to semantic-ui form regexp rule handler

[douglasg14b]

I'm also having regex validation issues with dates.

https://jsfiddle.net/tL5xx6m9/2/

[diuzzoli]

Is there a solution to this issue?
I tried execute several RegExp with Semantic-ui form validation but always returns invalid field value.

[rishirebel]

Hi
I was trying to use RegExp /(19|20)\d\d//\s(0[1-9]|[12][0123])[:][1-6]\d/
for getting a date and time format like 1998/04/04 23:40, but it does not validate the same. I tested my RegExp several times on Regex testers, it works fine there, but it is not validating correctly on semantic ui

[Iheff]

+1

[Iheff]

Don't forget to double escape all the things. //d not /d for a digit for example.

[jlukic]

Can someone give me a simple js regexp that is not evaluating correctly? I would love to fix

[elbouillon]

Hi @jlukic, I don't remember exactly, but the problem is not regex, but mixing short rules and complet rules. There is a thread mentionning that

[frangeris]

Having the same issue here, but with an string:

RegExp
regExp[/rgb\((\d{1,3}), (\d{1,3}), (\d{1,3})\)/i]

String
rgb(243, 243, 243)

Regular expression tested here...
https://regex101.com/r/gS7bD8/1

Where's the issue?

[frangeris]

@Iheff you're just right 👍 , for future references, I found the same solution here.

[jlukic]

I'll try to look over this as the last issues to put into 2.2

[Iheff]

Have you double escaped that?

Sent from my iPhone

On 20 May 2016, at 05:04, Frangeris Peguero notifications@github.com wrote:

Having the same issue here, but with an string:

RegExp
regExp[/rgb((\d{1,3}), (\d{1,3}), (\d{1,3}))/i]

String
rgb(243, 243, 243)

Regular expression tested here...
https://regex101.com/r/gS7bD8/1

Where's the issue?

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[daltonamitchell]

I had a similar issue with date validation but double escaping fixed it. Is this mentioned anywhere in the docs?

[Iheff]

It is touched on, I think, although I cant find it for looking now. I think I googled my way to an answer* on it but thought it would be good to leave it somewhere further up the google trail.

• [top answer on SO here: http://stackoverflow.com/questions/34684043/semantic-ui-regex-parser-does-not-seem-to-work-correctly]

You’d figure it out eventually though because it’s taking a string to pass a function that will run the regex so after a bit of head scratching it makes sense it should be re-escaped.

On 13 Jun 2016, at 20:00, Dalton A Mitchell notifications@github.com wrote:

I had a similar issue with date validation but double escaping fixed it. Is this mentioned anywhere in the docs?

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[newswim]

I was about to post an issue, having a hell of a time validating a phone number (which can be difficult in a lot of settings...)

DOUBLE ESCAPE special characters.

ex. \\d

thanks @Iheff

[jlukic]

I've added a new syntax to make it simpler to pass in regular expressions

Instead of using bracketed notation, you can now pass in a value with a non stringified RegExp

$('.ui.form').form({
    fields: {
        color: {
          identifier: 'color',
          rules: [{
            type: 'regExp',
            value: /rgb\((\d{1,3}), (\d{1,3}), (\d{1,3})\)/i,
          }]
      }
    }
});

This is the only solution I could think of, as once the regexp is encoded as a string it is impossible to infer the original intention for escaped bracketing.

[jlukic]

I've also added this specific example to usage section of form validatio to make it more clear.

[newswim]

Thanks @jlukic !

I think this makes the validation a little more intuitive.