custom-validators

Custom validators are great to add additional validation to your pages. They alert the supporter that a field hasn't been input in the correct format.

You can create new validators by going to Pages > Alerts & validators > Validators. When you create a new one, choose the Validator Type of "Custom". The custom code uses a language called "regex". You can learn about regex on sites like https://regexone.com and test your regex code before applying it to your pages at sites like https://regex101.com.

Below we'll include some example custom validators which you can use to modify your own use

Examples to understand regex in Engaging Networks

Must be between 1 and 100 characters (any character) long

^.{1,100}$

Must be up to 10 digits long

^\d{0,10}$

Should start with 0 followed by 9 digits

^(0[0-9]{9})?$

Must contain the letter a at least once

[a]+

Must not contain characters < > ~ or % anywhere (but must contain something)

^[^<>~%]+$

Can be blank OR not contain characters < > ~ or % anywhere

^$|^[^<>~%]+$

Must only contain letters - nothing else (not even spaces)

^[a-zA-Z]*$

Address validators

Address field - Can be blank OR contain letters, numbers, commas, spaces, dots, slashes, dashes, apostophes

^$|^[A-Za-z0-9\s\-\\\/.,—'’]+$

UK Postcode validator (based on one supplied by UK government). Will also allow blank postcodes which can be picked up by the mandatory option instead

^$|([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z]))))\s?[0-9][A-Za-z]{2})

Email validators

Email validator but exclude qq.com, 163.com, pp.com

^\w+[-\.\w]*@(?!(?:qq|163|pp)\.com$)\w+[-\.\w]*?\.\w{2,4}$

Email checker for commonly misspelt domains - must not contain @hotmial or @gmial

^((?!@hotmial|@gmial).)*$

Fundraising validators

Must be six digits long (sort codes)

^\d{6}$

Must be eight digits long (account numbers)

^\d{8}$

Must be 16 digits long (most card numbers)

^\d{16}$

Anti-spam validators

Must not contain any characters at all (i.e. be blank) - good for a spam trap since bots usually auto-fill all fields

^$