Formulardaten können nicht in der Django-Datenbank gespeichert werden

Question

Ich erstelle Formulare für mein Django-Projekt, und ich habe ein Problem: Ich kann Formulardaten für eines meiner Formulare nicht in der Django-Datenbank speichern. Ich kann Daten für das Wish_list-Modell hinzufügen, aber keinen Kommentar hinzufügen. Es gibt keine Fehlermeldungen, nur keine Änderungen nach dem Absenden des Formulars. Können Sie mir bitte sagen, wo ich einen Fehler habe?

Dies ist meine Modelle (von moders.py):

class Person (AbstractUser): 
    phone_number = models.CharField(max_length=30) 
    place_of_work_or_study = models.CharField(max_length=100) 
    img = models.ImageField(upload_to='Person/', null=True, blank=True) 
    class Meta: 
     verbose_name = 'Person' 
     verbose_name_plural = 'Users' 
    def __unicode__(self): 
     return self.username 

class Wish_list(models.Model): 
    person = models.ForeignKey(Person, null=True) 
    types = (
     ('Educational', 'Educational'), 
     ('Cultural', 'Cultural'), 
     ('Sports', 'Sports'), 
     ('Fun', 'Fun'), 
     ('Other', 'Other') 
    ) 
    type = models.CharField(max_length=50, choices=types, default='Other') 
    periods = (
     ('Up to 1 hour', 'Up to 1 hour'), 
     ('From 1 to 2 hours', 'From 1 to 2 hours'), 
     ('From 2 to 3 hours', 'From 2 to 3 hours'), 
     ('More then 3 hours', 'More then 3 hours') 
    ) 
    time_need = models.CharField(max_length=50, choices=periods) 
    place_name = models.CharField(max_length=50, blank=False, null=False) 
    description = models.CharField(max_length=1000) 

    def __unicode__(self): 
     return unicode(self.place_name) 

class Comment_to_wish_list(models.Model): 
    person = models.ForeignKey(Person, null=True) 
    comment_to = models.ForeignKey(Wish_list, null=True) 
    text = models.CharField(max_length=500) 
    def published (self): 
     self.published_date = timezone.now() 
     self.save() 
    class Meta: 
     verbose_name_plural = 'comments_to_wish_lists' 
    def __unicode__(self): 
     return unicode(self.comment_to) 

Dies ist forms.py:

class Wish_listForm(forms.ModelForm): 
    place_name = forms.CharField(max_length=50, help_text='enter the   place_name') 
    types = (
     ('Educational', 'Educational'), 
     ('Cultural', 'Cultural'), 
     ('Sports', 'Sports'), 
     ('Fun', 'Fun'), 
     ('Other', 'Other') 
    ) 
    type = forms.ChoiceField(choices=types, help_text='choose the type') 
    periods = (
     ('Up to 1 hour', 'Up to 1 hour'), 
     ('From 1 to 2 hours', 'From 1 to 2 hours'), 
     ('From 2 to 3 hours', 'From 2 to 3 hours'), 
     ('More then 3 hours', 'More then 3 hours') 
    ) 
    time_need = forms.ChoiceField(choices=periods, help_text='period') 
    description = forms.CharField(max_length=1000, help_text='description') 
    views = forms.IntegerField(widget=forms.HiddenInput(), initial=0) 
    likes = forms.IntegerField(widget=forms.HiddenInput(), initial=0) 
    class Meta: 
     model = Wish_list 
     fields = ('place_name', 'type', 'time_need', 'description','likes') 

class Comment_to_wish_listForm(forms.ModelForm): 
    text = forms.CharField(max_length=500, help_text='enter the text') 
    views = forms.IntegerField(widget=forms.HiddenInput(), initial=0) 
    likes = forms.IntegerField(widget=forms.HiddenInput(), initial=0) 
    class Meta: 
     model = Comment_to_wish_list 
     fields = ('text', 'views', 'likes') 

Dies ist urls.py:

app_name = 'friends_plans' 
urlpatterns = [ 
url(r'^$', views.index, name='index'), # start page 
url(r'^users/$', views.listing, name='listing'), 
url(r'^(?P<person_id>[0-9]+)/wish_list/$',views.wish_list,  name='wish_list'), 
url(r'^(?P<person_id>[0-9]+)/$', views.user, name='user'), 
url(r'^(?P<person_id>[0-9]+)/(?P<day_id>[0-9]+)/$', views.day, name='day'), 
url(r'^add_wish_list/$', views.add_wish_list, name='add_wish_list'), 
url(r'^(?P<wish_list_id>[0-9]+)/comment/$', views.comment, name='comment'), 
url(r'^(?P<wish_list_id>[0-9]+)/add_comment/$', views.add_comment, name='add_comment'), 
] 

Dies ist aus views.py:

def add_comment(request, wish_list_id): 
    wish_list = get_object_or_404(Wish_list, pk=wish_list_id) 
    if request.method == 'POST': 
     form = Comment_to_wish_listForm(request.POST, instance=wish_list) 
     if form.is_valid(): 
      newform=form.save(commit=False) 
      newform.person = request.user 
      newform.save() 
     else: 
      print form.errors 
    else: 
     form = Comment_to_wish_listForm() 
    return render(request, 'friends_plans/add_comment.html', {'form': form}) 

Diese

ist die Vorlage für Kommentar

{% extends 'friends_plans/base.html' %} 
{% block title %} Comments {% endblock %} 
{% block content %} 
    {% for comment_to_wish_list in wish_list.comment_to_wish_list_set.all %} 
     <div>{{comment_to_wish_list.text}}</div> 
    {% endfor %} 

<div><a href="{% url 'friends_plans:add_comment' wish_list.pk %}">Add comment</a> </div> 
</div> 
{% endblock %} 

Und das ist eine Vorlage hinzufügen Kommentar (die, die ich habe ein Problem mit):

{% extends 'friends_plans/base.html' %} 
{% block content %} 

<h1>Add a wish_list</h1> 
<form method="post" action=""> 
    {% csrf_token %} 
    {{form.as_p}} 
    <input type="submit" value="Add comment" /> 
</form> 
{% endblock %} 

Answer 1

Die instance muss das Modell der Form entsprechen, Comment_to_wish_list . Es macht keinen Sinn, instance=wish_list an das Formular zu übergeben, da das Modell nicht übereinstimmt.

Sie können das comment_to Feld nach der Form mit commit=False, in der gleichen Art und Weise speichern, die Sie das person Feld gesetzt:

wish_list = get_object_or_404(Wish_list, pk=wish_list_id) 
if request.method == 'POST': 
    form = Comment_to_wish_listForm(request.POST) 
    if form.is_valid(): 
     instance=form.save(commit=False) 
     instance.person = request.user 
     instance.comment_to = wish_list 
     instance.save()