Validation for text with a predefined start

[Mark Onimbo]

How do i write validation for a text question that only accepts text values that start with CD07 eg CD07 01, or CD07 4, anything that does not start with CD07 should be rejected

[Sheel Shah]

Hey Mark,

You could use add a regular expression validation to the text question so that it only accepts values that start with CD07.  

Otherwise, what I normally do is:

- Add a question list (this will make questions inside this appear on the same screen)

- Inside the question list add a label with the text that you want them to always enter (i.e. "CD07")

- Underneath it, add a text question that lets them enter the second part of the value (i.e. 04 or 7) 

- Add a hidden value (i.e. cd7_code that has a calculation that combines "CD07" and the value they entered.  So concat ('CD07', /data/questionlist/cd7_suffix). 

Thanks,

Sheel

On Tue, Mar 29, 2016 at 11:01 AM, Mark Onimbo <oni...@unfpa.org> wrote:

How do i write validation for a text question that only accepts text values that start with CD07 eg CD07 01, or CD07 4, anything that does not start with CD07 should be rejected

           

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Sheel Shah

Project Manager | Dimagi

m: +1.781.428.5419 | skype: sheel_shah

[Ismaïla Diene]

Hello Mark,

You can also use the substr function:

• substr(., 0, 4) should get you the 4 first characters of your text question.
  
• So in the validation condition of you text question put: substr(., 0, 4) = 'CD07'

Kind regards

Ismaila

______________________________________________

Ismaila DIENE

Field Technician

Dimagi, West Africa

m: +221 7814 78314 / +221 7601 01633

f: +221 33 820 7375

skype: isaack007
web: http://www.dimagi.com/

______________________________________________

[Mark Onimbo]

Thanks alot Ismail, think I still have a lot to learn

[Mark Onimbo]

Thanks shah, that makes more sense let me try it out.