meizon/django-formtools-addons

Django Formtools Addons

django-formtools-addons

'Addons for Django Formtools'

Features

• Add multiple forms to a single WizardView step (MultipleFormWizardView and subclasses)
• Use form wizard via JSON web API (WizardAPIView)

Quickstart

Install formtools-addons:

pip install django-formtools-addons

Then use it in a project:

# Every *MultipleForm* WizardView that can be imported is an equivalent of a builtin *WizardView in Django Formtools
from formtools_addons import (SessionMultipleFormWizardView, CookieMultipleFormWizardView,
                              NamedUrlSessionMultipleFormWizardView, NamedUrlCookieMultipleFormWizardView,
                              MultipleFormWizardView, NamedUrlMultipleFormWizardView)

# The WizardAPIView is also based on the builtin WizardView, but does not have the classic request-response cycle,
# since it exposes a JSON API
from formtools_addons import WizardAPIView

WizardAPIView: Example use

from __future__ import unicode_literals

from formtools_addons import WizardAPIView

from .forms import Form1, Form2, Form3, Form4


def show_substep_4(wizard):
    cleaned_data = wizard.get_cleaned_data_for_step('my-page1|my-substep-1') or {}
    return cleaned_data.get('some_field', None) != 'some_value'


class TestWizardAPIView(WizardAPIView):
    form_list = [
        ("my-page1", (
            ("my-substep-1", Form1),
            ("my-substep-2", Form2),
            ("my-substep-3", Form3)
        )),
        ("my-page2", (
            ('my-substep-4', Form4),
        ))
    ]

    condition_dict = {
        'my-page2|my-substep-4':   show_substep_4,
    }

    form_templates = {
        "my-page1|my-substep-1": 'demo/page1_substep1.html',
        "my-page2|my-substep-4": 'demo/page2_substep4.html',
    }

    preview_templates = {
        "my-page1|my-substep-1": 'demo/page1_substep1_preview.html',
        "my-page2|my-substep-4": 'demo/page2_substep4_preview.html',
    }

    def render_form(self, step, form):
        # Get preview template url
        template_url = self.form_templates.get(step, None)
        if template_url is None:
            data = form.cleaned_data
            return '<p>NO TEMPLATE: STEP: %s, DATA: %s</p>' % (
                step, json.dumps(data, default=self.json_encoder.default))

         # Load template
        template = get_template(template_url)

        # Create context
        context = Context()
        context['form'] = form

        return template.render(context)

    def render_preview(self, step, form):
        if not form.is_bound or not form.is_valid():
            return

        # Get preview template url
        template_url = self.preview_templates.get(step, None)
        if template_url is None:
            data = form.cleaned_data
            return '<p>NO TEMPLATE: STEP: %s, DATA: %s</p>' % (
                step, json.dumps(data, default=self.json_encoder.default))

        # Load template
        template = get_template(template_url)

        # Create context
        context = Context()
        context['data'] = form.cleaned_data if (form.is_bound and form.is_valid()) else {}

        return template.render(context)

################################################################

# testwizard/urls.py

from __future__ import unicode_literals
from django.conf.urls import url
from django.views.decorators.csrf import ensure_csrf_cookie

from .views import TestWizardAPIView

test_wizard = TestWizardAPIView.as_view(url_name='wizard')

urlpatterns = [
    # Registration Wizard API URL's
    url(r'^(?P<step>.+)/(?P<substep>.+)/$', ensure_csrf_cookie(test_wizard), name='wizard_step'),
    url(r'^(?P<step>.+)/$', ensure_csrf_cookie(test_wizard), name='wizard_step'),
]

MultipleFormWizardView: Example use

from __future__ import unicode_literals

from django import forms
from django.shortcuts import render_to_response

from formtools_addons import SessionMultipleFormWizardView

from .forms import Form1, Form2, Form3


class Wizard(SessionMultipleFormWizardView):
    form_list = [
        ("start", Form1),
        ("user_info", (
            ('account', Form2),
            ('address', Form3)
        ))
    ]

    templates = {
        "start": 'demo/wizard-start.html',
        "user_info": 'demo/wizard-user_info.html'
    }

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

    def done(self, form_dict, **kwargs):
        result = {}

        for key in form_dict:
            form_collection = form_dict[key]
            if isinstance(form_collection, forms.Form):
                result[key] = form_collection.cleaned_data
            elif isinstance(form_collection, dict):
                result[key] = {}
                for subkey in form_collection:
                    result[key][subkey] = form_collection[subkey].cleaned_data

        return render_to_response('demo/wizard-end.html', {
            'form_data': result,
        })

############################################################################################

form = Wizard.as_view(form_list, instance_dict={
    'start': user,  # User model instance
    'user_info': {
        'account': Account.objects.get(user=user),
        'address': Address.objects.get(user=user),
    },
})

Running Tests

$ tox