Re: multiple input fields validation

On Tue, Dec 30, 2008 at 2:04 PM, Ian Bicking <[email protected]> wrote:
> Marcin Stępnicki wrote:
>> Hello.
>>
>> I've got the following scenario:
>>
>> User has to fill in some fields, but I don't know how many of them
>> will be necessary. Let's say:
>>
>> 1. Child #1 birth date: .......  (+)
>> ---------------------------------------------
>> 2. Child #2 birth date: .......
>>
>> After clicking (+) a simple Javascript/jQuery function adds another
>> input field to DOM :
>>
>> <input id="finish_date-1" type="text" value="" style="width: 80px;"
>> name="finish_date"/>
>> <input id="finish_date-2" type="text" value="" style="width: 80px;"
>> name="finish_date"/>
>> etc.
>>
>> Unfortunately, I can't find a way to validate all fields
>> simultaneously. Here's a small snippet with my failed attempts:
>>
>> http://pastebin.com/f12b9ea26
>>
>> Just a thought: I can simply use different names for different input
>> fields and then perhaps somehow modify the validation schema depending
>> on number of fields added by the user, but it seems ugly.
>>
>> Is there any hope for me? ;-)
>
> If you call variabledecode on the values, you'll get {'finish_date':
> ['date1', 'date2', ...]}.  You can do this in the schema with
> prevalidators=[formencode.variabledecode.NestedVariables()].
>
> Once you get the exception, you want to do something like:
>
> try:
>     ...
> except Invalid, e:
>     errors = e.unpack_errors(encode_variables=True)
>
> Then the error dict will loko like {'finish_date-1': None,
> 'finish_date-2': 'some error'} (assuming the first field is fine and the
> second is not).  This should work as input to htmlfill.

I've got a similar issue in that I need to input search criteria,
which are triples of field-operator-term.  I've got it partly working
using ForEach, but haven't succeeded in linking the error message to
the right row.  I'll have more details next week when I get back to
it.

-- 
Mike Orr <[email protected]>
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