Form_valid içinde parent nesneler nasıl kaydedilir

Question

Sınıf tabanlı bir görünüm var. Bir nesneyi dernekle kaydetmeye çalışıyorum. İçine Yorumlar ekleyebilir Bir SuggestionBox (Model) sahiptir ve her bir katılımcı:

NOT NULL constraint failed: boxes_suggestion.box_id

fazla açıklama: Aşağıdaki hata var. Bir çeşit doodle klonu.

detail.html

 <h3>{{box.title}}</h3> 

<form action="." method="post">{% csrf_token %} 
    {{ form.as_p }} 
    <input id="box_id_value" type="hidden" name="box_id_value" value='{{box.id}}' /> 
    <input type="submit" class="btn btn-info" value="Add suggies 1" /> 
</form> 

views.py

class SuggiesForm(FormView): 
    ''' 
    Display the form 
    Otherwise 
    Process the form 
     1-Get the suggestion_box_id 
     2-Save the comment associated with that suggestion box. 
    ''' 
    template_name = 'boxes/detail.html' 
    form_class = SuggestionForm 
    success_url = '/boxes/success' 
    box_instance = '' 

    def get_context_data(self, **kwargs): 
     ''' 
     Retrieve the id of the Suggestion Box 
     ''' 
     context = super(SuggiesForm, self).get_context_data(**kwargs) 
     #Find The appropriate Box so that user can add Suggies 
     context['box'] = Box.objects.get(pk=self.kwargs['pk']) 
     box_instance = context['box'] 
     return context 

    def form_valid(self, form): 
     ''' 

     ''' 
     form.save(commit=False) 
     #box = box_instance 
     form.box = Box.objects.first() 
     form.participant = Suggestion.objects.first() 
     form.save() 
     return super(SuggiesForm, self).form_valid(form) 

models.py

@python_2_unicode_compatible 
class Box(models.Model): 
    """ 
    Box model 
    """ 
    def __str__(self): 
     return self.title 
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)  
    title = models.CharField(max_length=40, blank=True, null=True) 
    identify = models.BooleanField(default=False) 
    activate = models.BooleanField(default=False) 
    created_at = models.DateField(auto_now_add=True) 
    updated_at = models.DateField(auto_now=True) 
    #expiration_date = models.DateField(auto=Date in Future, blank=True, null=False) 
    #slug = AutoSlugField(_('slug'), populate_from="id") 
    #url(slug) 

@python_2_unicode_compatible 
class Participant(models.Model): 
    """ 
    Participant Model 
    """ 
    def __str__(self): 
     return self.email 

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)  
    email = models.EmailField(blank=True, null=True, default='anonymous@email.com') 
    username = models.CharField(max_length=40, blank=True, null=True) 
    box = models.ForeignKey(Box, on_delete=models.CASCADE) 
    created_at = models.DateField(auto_now_add=True) 
    updated_at = models.DateField(auto_now=True) 

@python_2_unicode_compatible 
class Suggestion(models.Model): 
    """ 
    For adding comments (or suggestions) 
    """ 
    def __str__(self): 
     return self.comment[0:10] 

    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)  
    comment = models.CharField("",max_length=250, blank=True, null=True) 
    box = models.ForeignKey(Participant, on_delete=models.CASCADE) 
    created_at = models.DateField(auto_now_add=True) 
    updated_at = models.DateField(auto_now=True) 

Answer 1

Doğru yerine bir şekilde nesnenin kendisi üzerine özelliklerini commit=False kullanılır, ancak daha sonra ilave nesneyi kaydetme işleminden döndü. Olması gereken: daniel @ roseman. @

object = form.save(commit=False) 
    object.box = Box.objects.first() 
    object.participant = Suggestion.objects.first() 
    object.save()