HUGE help, sorry for double-posting. I was a bit baffled. 

On Friday, 1 April 2016 22:59:00 UTC-5, Anthony wrote:
>
> Looks like a bug (please open a Github issue). In the meantime, see 
> http://stackoverflow.com/a/36369012/440323.
>
> Anthony
>
> On Friday, April 1, 2016 at 2:31:11 PM UTC-4, Jeremy Martin wrote:
>>
>> I have a simple piece of code:
>>
>> form = SQLFORM.factory(Field("readonly_field", writable=False, 
>> default="can't change")
>>                        ,Field("some_field", requires=IS_LENGTH(10,5))
>>                        ,Field("some_flag", "boolean", writable=False, 
>> default=True))
>>
>> if form.process().accepted:
>>     print("accepted")
>>
>> return dict(form=form)
>>
>>
>> Note that the "some_flag" field is defaulted to "true". If the form is 
>> submitted successfully, everything happens as expected: the "some_field" is 
>> blank but the other two fields have their original defaulted values. 
>>
>> Now, if the form fails validation, the "some_flag" checkbox is unchecked. 
>> The other read-only field still has its value.
>>
>> It should also be noted that using the "keepvalues" flag in the "process" 
>> function will persist the value in "some_field", but has no effect on 
>> whether the "some_flag" checkbox is checked.
>>
>> This looks like a bug, but if I'm doing something wrong I'm open to 
>> alternatives.
>>
>>

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