Re: Help with Django form wizard.

On Thu, Mar 7, 2013 at 9:21 PM, Dilip M <dilipm79@gmail.com> wrote:

Hi,

Here is what I am trying to do. Get the root folder name in form 1 and list the found sub directories (matching a pattern) and give an
option for user to select the sub dirs. Once selected,  I want to save the model.

1. How to dynamically display found sub directories in form 2. I have defined a method (def _findSubs) in views.py
2. I have split a model into 2 forms. How to save the data fetched from 2 forms into one model.
3. I have read the docs. But couldn't figure out where to put WizardView.get_form_initial() method. My knowledge with Django is very trivial.

Here is what I am doing.

--------------------
models.py
-------------------

from django.db import models

class Tree(models.Model):
    rootDir = models.CharField(max_length=100) # will be populated using form 1
    subDirs = models.CharField(max_length=100) # will be populated using form 2

    def __unicode__(self):
        return u'%s %s' % (self.rootDir, self.subDir)

  
--------------------
views.py
-------------------

from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.contrib.formtools.wizard.views import SessionWizardView
from myapp.forms import MainForm, SecondForm


FORMS = [("main", MainForm), ("select", SecondForm)]
TEMPLATES = {"main": "main.html", "select": "select.html"}

class FormWizard(SessionWizardView):

    def get_template_names(self):
        return [TEMPLATES[self.steps.current]]
   

        def get_form_kwargs(self, step):
                if step == 'select':
                    kwargs = {}
                    kwargs.update({'choices': (('1', 'Option1'), ('2', 'Option2'))})

                    return kwargs
                else:
                    return {}

       
Now I get

File "C:\Python27\lib\site-packages\django\contrib\formtools\wizard\views.py" in render_next_step    302.             files=self.storage.get_step_files(next_step))  File "C:\Python27\lib\site-packages\django\contrib\formtools\wizard\views.py" in get_form    395.         return self.form_list[step](**kwargs)    Exception Type: TypeError at /  Exception Value: __init__() got an unexpected keyword argument 'choices'  

-------------------
forms.py
-------------------

from django import forms
from myapp.models import Tree

.
.

class SecondForm(forms.Form):
    SUBDIRS = # _findSubs result should be here.
    SELECTED = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple, choices = SUBDIRS)


 

    def done(self, form_list, **kwargs):
        # Now save Model here. HOW??
        pass


def main(request):

    if request.method == 'POST':
        http_req_type = request.method
        mainform = MainForm(request.POST)

        if mainform.is_valid():
            cd = mainform.cleaned_data  
            tree = cd['rootDir']
   subdirs = _findSubs(tree)
    else:
        http_req_type = request.method
        mainform = MainForm()

    return render(request, 'main.html', locals())

def selection(request):
    if request.method == 'POST':
        http_req_type = request.method
        selectionform = SecondForm(request.POST)
       
        if selectionform.is_valid():
            cd = selectionform.cleaned_data
            subdirs = selectionform.cleaned_data.get('SELECTED')
            return HttpResponseRedirect('/done/')
    else:
        http_req_type = request.method
        form = SecondForm()
                                   
    return render(request, 'select.html', {'form':form })

def _findSubs(tree):
    ''' Return a list of sub directory matching the pre-defined patter
    '''
    # some logic here. Don't worry abt it.
    return subs


-------------------
urls.py
-------------------
from myapp import views

    url(r'^main/', views.FormWizard.as_view(views.FORMS)),

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