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Using [date stamp] in question validation equation

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9 years 3 months ago #114870 by Mixer
Hello everybody,

how is it possible to use [date stamp] in the question validation equation?
Do I have to use JavaScript/PHP or is it possible in LimeSurvey with EM?

My problem is:
The same participant must fill out the same survey over several days, with a minimum of 1 day since the last time he filled it out.
Only filled out surveys should be tracked.

I thought it might be possible to make a validation equation like this:

[datestamp] +24 hours le (is the same as <=) [date]

but it wont work.

Any advice or hint would be appreciated.

Best regards from germany,
Mixer
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9 years 3 months ago #114875 by Ben_V
Maybe a good start here ;)

Benoît

EM Variables => bit.ly/1TKQyNu | EM Roadmap => bit.ly/1UTrOB4
Last Releases => 2.6x.x goo.gl/ztWfIV | 2.06/2.6.x => bit.ly/1Qv44A1
Demo Surveys => goo.gl/HuR6Xe (already included in /docs/demosurveys)
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