Validators can be applied to individual form fields on your pages to help ensure you supporters supply responses that conform to your data requirements.
The error alert specified in the validator will be displayed automatically if the supporter enters a value that doesn’t match the validator and then submits the page.
Types of validators
Engaging Networks has eleven default validators available plus one custom that you can create:
|
Type |
Description |
|
Required |
Use on mandatory form fields and if left blank, it will display your message. |
|
Alphanumeric |
You can request that the data entered is letters and numbers only. |
|
Required Alphanumeric |
You can request that the data entered is letters and numbers only that is mandatory. |
|
Restricted Alphanumeric (25 characters) |
Does not allow the characters @/\.: to be submitted in a field. It also restricts to a maximum of 25 characters. This is useful if you are finding you are receiving spam URL-type submissions into the First Name and Last Name |
|
Numeric |
You can request that the data entered is numbers only. |
|
Required Numeric |
You can request that the data entered is numbers only that is mandatory. |
|
Date |
You can request that a value entered in a date field is in a specific date format. You can choose one of the following formats:
NOTE: The tagged field “SUPPORTER BIRTHDAY” has to be formatted as YYYY-MM-DD and should not use this validator. |
|
Required Date |
You can request that a value entered in a date field is in a specific date format that is mandatory. |
|
|
You can validate if the value entered in the email address field is a valid email format. |
|
Required phone number |
The field should include the “+” country code at the start, for example +44123456789. This format is required for click to call pages and for SMS. |
|
Custom |
You can create a tailored validator using regular expressions (regex) such as:
|
|
Donation Amount |
You can set a minimum and maximum donation amount allowed on the form. Enter the min~max (5~1000) separated by a ~ symbol. If a decimal is included in the value range, it will also be allowed in the field (5.01~1000.99) |
|
ISO Date |
You can validate that the date entered is in the ISO (international) date format YYYY-MM-DD. |
NOTE: Each validator will have an error alert for each locale enabled in your account.
Creating validators
To create a new validator, go to Pages > Alerts & Validators
Click on the new validator button 
and select the validator type.
Enter a name for your validator as well as the error message the supporter will receive if the validator is triggered.
Managing Validators
To edit an existing validator, click on the edit icon 
.
To delete an existing validator, click on the delete icon 
.
Custom Validators
Some examples below and at Github
| Type | Expression |
| Account number (8 digits) |
^\d{8}$
|
| Credit card number (16 digits) |
^\d{16}$
|
| CVV number (3 or 4 digits) |
^\d{3,4}$
|
| First name longer than 1 character |
^.{2,}$
|
| Sort code (6 digits no hyphens) |
^\d{6}$
|
| UK postcode | ^$|([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z]))))\s?[0-9][A-Za-z]{2}) |
| Republic of Ireland postcode | ((?:^[AC-FHKNPRTV-Y][0-9]{2}|D6W)[ -]?[0-9AC-FHKNPRTV-Y]{4}$)|(^$|([Gg][Ii][Rr] 0[Aa]{2})) |