Correct, post is for POST, get is for GET. When a form is POSTed successfully, the user is redirected to another URL, typically a success page or something of your choosing. So after your POST, if you are simply redirecting back to this CreateView, you no longer have access to the invoice that you just created in this view. You are creating a completely new invoice using the GET method. Maybe you mean to be creating an UpdateView with this new information about self.jobs?
From: django-users@googlegroups.com [mailto:django-users@googlegroups.com] On Behalf Of furzihurzischleim Sent: Wednesday, March 7, 2018 12:10 PM To: Django users Subject: Re: unable to render initial data in ModelForm called through CreateView thanks for the link, i was aware of that but was unable to find my error (that's why i turned to irc, and then to the list).. it is true self.jobs is set from the post() method. that's because the CreateView should be called if there are jobs selected in a POST-form. so post() sets self.jobs which get processed (and summed to initial['amount'] and initial['currency']) in get_initial(), which itself is printed to console correctly. it then instantiated a form, which gets the right arguments (initial dict) with the right values. but they won't show up :( just for clarification: post() gets called if the request uses POST-method, and get() gets called on GET-requests, right? i know this is more of a beginner issue, but i'm unable to get further in my work at this point. thanks for your time and your advice! Am Mittwoch, 7. März 2018 18:44:40 UTC+1 schrieb Matthew Pava: Well, I see that you only set self.jobs<http://self.jobs> in the post method in CreateInvoice. How are you seeing proper console output for get_initial when self.jobs<http://self.jobs> is not even set in the get method? Are you sure you are seeing exactly what you want to see? Please double-check. When presenting the form for the first time, it will use the get method on CreateInvoice. Since you did not override it, it will use the default implementation. You didn’t set self.jobs<http://self.jobs> anywhere else but in the post method. I also find this website helpful when dealing with class-based views: https://ccbv.co.uk/projects/Django/1.11/django.views.generic.edit/CreateView/ From: django...@googlegroups.com<javascript:> [mailto:django...@googlegroups.com<javascript:>] On Behalf Of furzihurzischleim Sent: Wednesday, March 7, 2018 7:11 AM To: Django users Subject: Re: unable to render initial data in ModelForm called through CreateView :) Invoice Form is "just" a normal Modelform - nothing fancy added. class InvoiceForm(forms.ModelForm): class Meta: model = Invoice fields = '__all__' def __init__(self,*args,**kwargs): print("InvoiceForm.__init__();;;") #print( self) print( args) print( kwargs) return super(InvoiceForm, self).__init__( *args, **kwargs ) Am Dienstag, 6. März 2018 18:08:33 UTC+1 schrieb Matthew Pava: Let's see InvoiceForm. Also, it doesn't make much of a different, but I wouldn't call copy on the super.get_initial() method. -----Original Message----- From: django...@googlegroups.com<mailto:django...@googlegroups.com> [mailto:django...@googlegroups.com] On Behalf Of Gabriel Wicki Sent: Sunday, March 4, 2018 2:48 PM To: django...@googlegroups.com<mailto:django...@googlegroups.com> Subject: unable to render initial data in ModelForm called through CreateView hello list i ran into some weird stuff and neither i nor 2 gentle folks down at the irc-chat could find any obvious problems. task should have been easy: calculate some special initial data and present it as initials in a form. the form is showed correctly, and the right values are printed in console.. and, of course, there is no error raised.. thank you for any hints! i've been stuck here.... gabriel # models.py class AmountModel(models.Model): class Meta: abstract = True currencies = ( ('CHF', "Swiss Francs"), ('EUR', "Euros"), ) amount = models.FloatField(); currency = models.CharField( max_length=3, choices=currencies, default='CHF' ) def __str__(self): return "{} {}".format(self.amount, [ j[1] for i,j in enumerate(self.currencies) if j[0] == self.currency][0] ) def short(self): return "{} {}".format([ j[0] for i,j in enumerate(self.currencies) if j[0] == self.currency][0], self.amount ) def __add__(self, other): return AmountModel(amount=self.amount+other.amount, currency=self.currency) class DocumentModel(models.Model): class Meta: abstract = True tex = models.FileField(verbose_name = "TeX") pdf = models.FileField(verbose_name = "PDF") def generate_pdf( self ): return class Invoice(AmountModel, DocumentModel): STATUS = ( ("o", "open"), # initialized ("c", "complete"), # completed (no info missing) ("s","sent"), # sent ("p","pending"), # sent but money not yet received ("pd","paid") # paid and archived ) client = models.ForeignKey( 'Client', on_delete=models.CASCADE ) title = models.CharField( max_length=200 ) status = models.CharField( max_length=2, choices = STATUS ) number = models.IntegerField( blank=True ) date_created = models.DateField( auto_now=True ) date_sent = models.DateField( blank=True ) date_paid = models.DateField( blank=True ) @property def jobs(self): return Job.objects.filter( invoice=self ) @property def expenses(self): return Expense.objects.filter( invoice=self ) def __str__(self): if self.status.startswith('p'): return '%d %s'.format(self.number, self.title ) return self.title def update_status(self): if (self.date_sent == None): self.status = STATUS[0][0] elif (self.date_paid == None): self.status = STATUS[1][0] else: self.status = STATUS[2][0] return def calculate_amount(self): amount = 0 for o in [ self.jobs<http://self.jobs>, self.expenses ].flatten: amount += o.amount self.amount = amount self.save() return def create_tex( self ): template_file = 'templates/invoice.tex' t = loader.get_template(template_file) context = { 'title': self.title, } filename = '%d %s'.format(self.number, slugify(self.title) ) self.tex.file = open(filename+'.tex', 'w') self.tex.file.write(smart_str( t.render(context) )) return def send_to_client( self ): return # views.py class CreateInvoice(CreateView): model = Invoice form_class = InvoiceForm template_name = 'standard_form.html' def get_initial(self): initial = super(CreateView, self).get_initial().copy() initial['title'] = "blablabla" amount = {'CHF': 0, 'EUR': 0} currency = self.jobs<http://self.jobs>[0].worth.currency for j in self.jobs<http://self.jobs>: amount[j.worth.currency] += j.worth.amount for a in amount.keys(): if not amount[a] == 0: try: initial['value'] is None except KeyError: initial['currency'] = a initial['amount'] = amount[a] print(initial) return initial def post(self, request, *args, **kwargs): print("post()") req = request.POST.copy() req.pop('csrfmiddlewaretoken') self.jobs<http://self.jobs> = Job.objects.filter(id__in=req.keys(), client_id=kwargs['client_id']) return super(CreateView, self).post(request,*args,**kwargs) # standard_form.html {% extends 'main_form.html' %} {% block formaction %}{{ formaction }}{% endblock %} {% block 'title' %}{{ title }}{% endblock %} {% block form %} {% for field in form %} <div class="field{% if field.is_required %} required{% endif %}"> <div class="form-error">{{ field.errors }}</div> {{ field.label_tag }} {{ field }} </div> {% endfor %} {% endblock %} -- You received this message because you are subscribed to the Google Groups "Django users" group. 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