Validation String question

[Webmaster001]

We have a custom field that is a "Name" for example Jack Smith. We want to set " Expression Validation String" so it checks whether the typed name matches this format.

 

Name Lastname (only characters and it should not be empty). We used the following:

 

/^[a-z\d_]{2,28}$/i

 

However this does allow empty fields to be submitted. Any suggestion what validation string we should use to check for empty fields and allows spaces?

[brian!]

I think the regex below would be valid - though depending on what you need it for, it might be overkill !

 

it allows characters, apostrophes (e.g Irish type names O'Smith) and double-barrel names (John Smith-Jones)

 

/^([a-zA-Z'-]+\s?){1,4}[a-zA-z'-]+$/

 

although it's not perfect as it would allow multiple hyphens or apostrophes, and wouldn't allow international names and characters (ć etc)

[Webmaster001]

Thanks, this is great. However it doesn't check for empty entries. So if the client doesn't put any input we do not get any error. Any suggestion?

[brian!]

Thanks, this is great. However it doesn't check for empty entries. So if the client doesn't put any input we do not get any error. Any suggestion?

apologies for that - try this...

 

/^(?(([a-zA-Z'-]+\s?){1,4}[a-zA-z'-]+)$/

[Webmaster001]

Nope, I tried Jack Smith and it doesn't work. Whatever I type it keeps showing error.

[brian!]

aahh it was late at night!

 

in this instance, there's no need to check for an empty string - go back to the original regex below and make it a "Required Field" in the custom fields tab of the product - that will prevent it from being empty, and the regex should keep it to a valid format.

 

/^([a-zA-Z'-]+\s?){1,4}[a-zA-z'-]+$/