= if VicePresident = "John Smith" and President = "John Smith" then "Please do not select John Smith more than once." else "" Once you’ve built your custom error expression, you can write a static error message like the one above (“Please do not select the same candidate more than once.”), or you can use the Calculation Editor to create a more dynamic message that changes depending on the error at hand.įor instance, if John Smith is picked twice, you can use a simple if/then statement to create a custom message: Now, when the same option is selected more than once, an error message will appear in the offending field: (Treasurer = "Joe Blow" and VicePresident = "Joe Blow") (Treasurer = "Jane Doe" and VicePresident = "Jane Doe") or (Treasurer = "John Smith" and VicePresident = "John Smith") or
(Treasurer = "Joe Blow" and President = "Joe Blow") or (Treasurer = "Jane Doe" and President = "Jane Doe") or Next, write the message that will appear underneath the field if the error criteria is met:įollow the same process with the Treasurer field this time expanding the expression out to include both previous fields: =(Treasurer = "John Smith" and President = "John Smith") or This expression is just checking off every instance when the President field and the Vice President field could have the same answer. (VicePresident = "Joe Blow" and President = "Joe Blow") (VicePresident = "Jane Doe" and President = "Jane Doe") or Starting with the second field, Vice President, we’re going to open the Custom Error - When option from the field settings and use the Basic Editor to build the following expression: =(VicePresident = "John Smith" and President = "John Smith") or In this case, you can use custom validation to prevent your users from selecting the same option multiple times.įor this example, we’re using three Choice fields: President, Vice President, and Treasurer: In some cases, like on a ballot, you may not want the same candidate to be selected more than once.
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In this post, we’re going to tackle a couple more examples of how you can use the Custom Error option on your forms - including how to make different messages appear depending on which error occurs. In a previous post, we discussed the basics of creating custom errors, along with a simple example of how to ensure that two Email fields have the same value. After the release of our Custom Error feature at the beginning of this year, many Cognito Forms customers have taken advantage of the ability to implement custom validation rules on their forms.
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