date validation

[Adam Preston]

Is there an easy way to validate that age and a date of birth are valid. For example, if specify that I am 20, then my birthday must be between 6/17/1995 and today.  I have tried a bunch of contraints, and nothing seems to work.

[Adam Preston]

Actually I see this now: https://groups.google.com/forum/#!searchin/kobo-users/date/kobo-users/9KKqoQ1UqM4/bvy7Aik0jrAJ

How can I import this XML?

[Adam Preston]

NEvermind, guys. I am moving this to the ODK group.

[Tino Kreutzer]

Hi Adam,

What you need to do in this case is first calculate the age based on the date of birth, then round it. This will give you the current age in years. Then you can use validation logic to check if the two ages are the same. Note that since age is given in completed years and never rounded up, you have to subtract 0.5 (see the formula below and in the attached form). 

Best,

Tino

On Tue, Jun 16, 2015 at 6:40 PM, Adam Preston <adama...@gmail.com> wrote:

Is there an easy way to validate that age and a date of birth are valid. For example, if specify that I am 20, then my birthday must be between 6/17/1995 and today.  I have tried a bunch of contraints, and nothing seems to work.

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[Adam Preston]

Thank you sooooooooo much!