I created the ticket containing the wizard proposal, it includes new
cleaned up version that offers a lot more flexibility...
http://code.djangoproject.com/ticket/3218
On 12/27/06, Honza Kr l <[EMAIL PROTECTED]> wrote:
So,
a little example with dynamic forms, I hope you don't mind
pseudo-code, I don't feel like writing a working standalone example
and I cannot publish my application (its in Czech anyway ;) )
urls.py:
urlpatterns = patterns('some.app.views',
(r'wizard/$', 'my_wizard' ),
)
some/app/views.py:
from django import newforms as forms
from django.contrib.formtools import wizard
# we always have to supply at least one form
class FirstForm( forms.Form ):
item_list = forms.MultipleChoiceField( choices=[ (1,'ONE'), ( 2, 'TWO) ] )
# function that will generate a second form for us dynamically:
def get_second_form( items ):
# second form contains only labels for items selected in FirstForm
class SecondForm( forms.Form ):
def __init__( self, **kwargs ):
super( SecondForm, self ).__init__( **kwargs )
for i in items:
self.fields['label_%s' % i ] = forms.CharField( max_length=100 )
return SecondForm
# our wizard
class LabelManyWizard( wizard.Wizard ):
# after submitting the first form, create the second and append it
to form_list
def process_step( self, request, form, step ):
if step == 0:
form.full_clean()
self.form_list.append( get_second_form( form.clean_data['item_list'] ) )
super(LabelManyWizard, self ).process_step( request, form, step )
# when both forms are validly filled, do what you always wanted to do
def done( self, request, form_list ):
first, second = form_list
first.full_clean()
second.full_clean()
for i in first.clean_data['item_list']:
print "Label for item %s is %s" % ( i, second.clean_data[
'label_%s' % i ])
return HttpresponseRedirect( '/' )
# a little wrapper function - we could put the LabelManyWizard(
[FirstForm] ) into urls as a callable,
# but since it modifies its form_list it wouldn't work, hence this
little work around
# (this is only neccessary for dynamic wizards)
def my_wizard( request ):
wiz = LabelManyWizard( [FirstForm] )
return wiz( request )
------------- DONE -------------------
in order for this to work, you will need patch from ticket #3193 -
that is needed to pass the values from FirstForm.item_list because
normal as_hidden() wouldn't work for MultipleChoiceField...
looking forward to any comments
Honza
On 12/26/06, Honza Kr l <[EMAIL PROTECTED]> wrote:
> Hello all,
>
> I got bored during the holiday, so I put together a simple
> implementation of django.contrib.formtools.wizard...
>
> Features:
> all data are kept in POST, nothing is stored on the server (this is
> simply not very good for file uploads, but should be OK for the
> majority)
>
> security_hash from preview.py (by adrian) is used to ensure that
> previously submitted data didn't change (if they have, returns to the
> step in question), successful validation is only done once
>
> old data are stored as individual fields not pickled by step
>
> process_step() is called after successful validation of every step
> or after verifying the step's hash.. it is not meant to change
> something in the DB, it is meant as a hook to change the wizard's
> state (for example after processing step 1, generate form for step 2).
> That's also why it is called every time a form is submitted for all
> submitted steps (except the current one if its invalid)
>
> done() is THE method to override, it receives list of form instances
> with valid data corresponding to the form_list, and the request
> object, its output is returned directly...
>
> Bugs:
> there is no (or very little) way of introducing your own logic or
> overriding some defaults (for example there is no way to supply the
> step number vie URL), this will change (see TODO)
>
> no documentation so far - I first want to make sure people are OK
> with the state of things before I start doing some. However if someone
> needs to know more than is written here to give it a try, let me
> know...
>
> Usage:
> 1) subclass it and supply a done() method, that will taje request
> and a list of form instances with valid data
> 2) into urls enter:
> ( r'SOMETHING', MyWizard( [MyForm1, MyForm2, ...] ) ),
> 3) supply a template (default is test.html so far, or override it in
> get_template() ) taht looks like this:
> <form action="." method="POST">
> FORM( {{ step }}): {{ form }}
>
> previous_fields: {{ previous_fields }}
>
> <input type="submit">
> </form>
>
> 4) report bugs and enhancement requests here or to me personally
>
> I am looking forward for any feedback
> Thanks
> Honza
>
> On 12/20/06, rassilon <[EMAIL PROTECTED]> wrote:
> >
> > One slight modification, there was debugging code left in, which I've
> > now fixed.
> >
> >
> > > > >
> >
>
>
> --
> Honza Kr l
> E-Mail: [EMAIL PROTECTED]
> ICQ#: 107471613
> Phone: +420 606 678585
>
>
--
Honza Kr l
E-Mail: [EMAIL PROTECTED]
ICQ#: 107471613
Phone: +420 606 678585
--
Honza Kr l
E-Mail: [EMAIL PROTECTED]
ICQ#: 107471613
Phone: +420 606 678585
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Django
developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/django-developers?hl=en
-~----------~----~----~----~------~----~------~--~---
