Bit of a strange one this...

Part of the design for an app I'm currently working on is that we need to add a 
form designed to create lots of different questionnaires - we can't really have 
a model for each questionnaire, as there will be many hundreds, and they'll all 
have different questions, possible answers etc. So an EAV model 
(http://en.wikipedia.org/wiki/Entity-Attribute-Value_model) looks best for this 
particular requirement.

In essence, what I'm creating is a form designer similar to ExpressionEngine 
custom fields here : 
http://expressionengine.com/docs/cp/admin/weblog_administration/custom_fields_edit.html,
 the difference being that I'm going to be adding a few extra fields for 
validation.

So, my question is : how can I get this method to work with the Symfony forms 
and validators? Ideally, I don't want any manual intervention once this is set 
up.

With the new forms, it looks like it could be quite difficult, because a 
questionnaire doesn't relate directly to a model (and even if it did, 
autoloading all of those objects would kill any server). However, I'm wondering 
if this would be far easier by enabling COMPAT_10 and dynamically creating a 
validator.yml each time a new questionnaire is created?

Anybody have experience of doing similar before with Symfony? or have any 
clever ideas?

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