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Question

Forms regular expression True or False without being in radio or drop down button

Forms
Updated February 18, 2022
asked on February 17, 2022

I would like to use a single field for a True or False answer on a form, but the user must enter True or False, not in a radio button, checkbox, or dropdown field because it is going to prefill from a database, but I want the user to be able to change the value from True to False or from False to True.  With a drop-down, I can have it prefill, but I cannot change it.

 

Could I do this with a Regular Expression and only allow the values "True" or "False"  And if so, how do I write that?

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SELECTED ANSWER
replied on February 17, 2022

Got it!

 

In Regular Expression field I added (True|true|False|false).

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replied on February 18, 2022

I’m not where I can access my system, but I believe I did similar to your solution and later discovered that staff could add extra characters and the system would accept it.  So you might want to test it with a valid response and then add extra text to the beginning and/or end to see if it still accepts it as valid.

If I’m right, then you can probably resolve it with start and end string anchors, like this:

^True$|^true$|^False$|^false$

 

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replied on February 18, 2022

Thank you.  I will check that out too.

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