stop wtforms from caching

[Richard Cheesmar]

I have a form which generates some selects using certain data. This is done using wtforms with python, webapp2, gae on the server and passed as a kwarg to the client. The site is multilingual using Babel translations. When I change the language on the production server the form gets called but the data doesn't change language. This works fine on the development server, but not in production.

Code:

This is attached to a handler class and does what it is supposed to

def form(self):
    from product.product_data.forms import ProductForm
    return ProductForm(self)

In my BaseHandler I have the following:

if hasattr(self, 'form'):
    kwargs['form'] = self.form()
    logging.info('get form')
    logging.info(kwargs['form'].product_type())

Now the second log logging.info(kwargs['form'].product_type()) shows the correct language on the dev server but not on the production server

The form is thus:

class ProductForm(BaseForm):
    """
        One big product form
    """

    # ----------------PRODUCT-------------------

    # Set the product types - alphabetically as either Radio buttons or selectmultiple
    # which is interpreted as checkbox on client

    p = realestate_product()

    for k, v in p.iteritems():

        try:
            if v['set']:
                set = get_set(v)
                # Use locals() here to append product with content of k and make form variable
                locals()['product_' + k] = fields.SelectField(v['label'], choices=set)
        except:
            if v['exclusive']:
                locals()['product_' + k] = fields.SelectField(v['label'], choices=sorted(v['choices'], key=lambda tup: tup[1][1:]))
            else:
                locals()['product_' + k] = fields.SelectMultipleField(v['label'], choices=sorted(v['choices'], key=lambda tup: tup[1][1:]))

    pass

At first I was using a webapp2.cached_property on the form method, but have since removed it as even when I called the form from a non cached method on change of language, it still didn't work.

Appreciate any feedback

Thanks

[Richard Cheesmar]

ok, couldn't figure this one out, so rewrote the code to build selects in a simple def and pass as a parameter instead of form. Seems to be working. I have my suspicions regarding wtforms though, but it's a pain not knowing, but no time...