Hi,
Are you sure you don't get a thread safety issue ?
Do you have your own template tags for those forms ?
Regards,
Xavier.
Le 20 sept. 2010 à 18:42, intrepidweb a écrit :
> Hi all,
>
> Last week I ported a site that gets 50k+ pageviews/day from a PHP/
> mySQL stack to Django/Postgresql. It has gone mostly smoothly, all
> things considered. However, I have encountered a VERY troubling bug
> involving the forms module, and I can't figure it out.
>
> The form in question allows users to edit their profile. We have
> several types of users, and each user type has a core set of fields,
> as well as a few unique ones. Rather than write each profile edit form
> from scratch, they inherit from parent classes.
>
> The profile edit form accepts a User instance in its __init__ method,
> and uses that object to populate the initial data, and also to save
> the cleaned data to the appropriate User and UserProfile instances.
>
> The problem is in about 20% of the time, the form, when displayed on a
> page, is displaying OTHER users' information as the initial data. I
> have determined that this is not a page caching issue. Additionally, I
> confirmed that the correct user object is being passed to the form
> class. So the form instance itself is switching the user object. My
> guess is that somehow the user object is being assigned as a class
> attribute, not an instance attribute. But otherwise I am stumped.
>
> Here are snippets of the code. I know the inheritance scheme seems a
> bit convoluted, but it was written this way in the name of DRY. Any
> help would be greatly appreciated.
>
> Leif
>
> #####################
>
> class PostalCodeForm (forms.Form):
> country = forms.ChoiceField(choices=[(c.country_code,c.en_name) for c
> in Country.objects.all()],required=True, label='Country')
> postal_code = forms.CharField(required=True, label="ZIP/postal code")
>
> def clean_country (self):
> ...
>
> def clean_postal_code (self):
> ...
> ####
>
> class UserProfileEditFormBase (forms.Form):
> first_name = custom_fields.NoProfanitiesCharField(max_length=150,
> help_text = 'Your real first name. We will keep it private.')
> last_name = custom_fields.NoProfanitiesCharField(max_length=150,
> required=False, help_text = 'Your real last name. We will keep it
> private.')
> display_name = custom_fields.NoProfanitiesCharField(max_length=40,
> help_text="Your public screenname. Will be shown on reviews that you
> write, comments, etc.", label="Display name")
> email = custom_fields.EmailField()
> gender = forms.models.ModelChoiceField(queryset=Gender.objects.all(),
> empty_label=None)
>
> def __init__ (self, user, *args, **kwargs):
> kwargs.setdefault('initial',{})
> kwargs['initial'] = self.get_initial(user,kwargs['initial'])
> super(UserProfileEditFormBase,self).__init__(*args, **kwargs)
> self.user = user
>
> def get_initial (self, user, initial={}):
> for k in self.base_fields.keys():
> if k=='country':
> initial[k] = getattr(profile,k).country_code
> elif k=='postal_code' and getattr(profile,k,None):
> initial[k] = getattr(profile,k).postal_code
> elif getattr(user,k,None):
> initial[k] = getattr(user,k)
> elif getattr(profile, k, None):
> a = getattr(profile, k)
> if hasattr(a,'id'):
> initial[k] = a.id
> else:
> initial[k] = a
> return initial
>
> def save (self):
> # uses self.user to save the cleaned_data
> ...
>
> ##########
>
> class UserProfileEditForm (UserProfileEditFormBase, PostalCodeForm):
>
> about_you = forms.CharField(help_text="Description of yourself that
> will appear with reviews and comments that you write.",
> widget=forms.widgets.Textarea, required=False )
>
> def get_initial (self, user, initial={}):
>
> initial = super(UserProfileEditForm,self).get_initial(user,
> initial)
> bios = user.reviewerbio_set.filter(is_primary=True)
> if bios:
> initial['about_you'] = bios[0].text
>
> return initial
>
> def save (self, user):
> ....
>
> ###############
>
>
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