Displaying multiple error messages

[Max Spohn]

Hi all, 

I am looking for a way to display multiple error messages at the same time. In the following example both conditional statements could be true, in which case I would like the error message after the failed validation to display:

Errors

• Message 1
• Message 2

def error_message(self, values):
    print ('values is', values)
    if values["var1"] == 1 and values["var2"] != 0: 
        return "Message 1"
    if values["var1"] == 1 and values["var3"] == None:
        return "Message 2"   

Can this be done? Thanks a lot for your help.

Best,

Max

[Chris Crabbe]

Hi Max -

If you make a third conditional before those two with both conditions (and both messages) it would trigger first and only when all conditions are filled:

if values["var1"] == 1 and values["var2"] != 0 and values["var1"] == 1 and values["var3"] == None:

    return 'Message 1 and Message 2'

Thanks,

--Chris

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[Max Spohn]

Thanks. Is there a more efficient solution though? The code above was only an example, in my case I would actually need fourteen conditions per page, so I was hoping there was a better solution? 

[Chris @ oTree]

See here: https://otree.readthedocs.io/en/latest/misc/tips_and_tricks.html#avoid-duplicated-validation-methods