Problems with CRUD, in update

[Giuseppe Ciuni]

Hi guys I'm learning django and I am doing some tests with CRUD using crispy forms: I created a model and I can create and read data without any problem.

I have problem in update. I get this error: 

postalgps.models.Tabacchino.DoesNotExist: Tabacchino matching query does not exist

In model I have:

class Tabacchino(models.Model):
    nome = models.CharField(max_length=200)
    cognome = models.CharField(max_length=200)
    indirizzo = models.CharField(max_length=200)
    telefono = models.CharField(max_length=30)
    email= models.CharField(max_length=200)
    nome_tabacchi = models.CharField(max_length=200)
    attivo = models.BooleanField(blank=True)  #esiste anche l'opzione null=True
    pub_date = models.DateTimeField(auto_now_add=True)

In views.py:

def updateTabacchi(request):
    query = request.POST.get('tabacchi_id')
    tabacchi = Tabacchino.objects.get(id=query)
    form = TabacchinoForm(instance=tabacchi)
    if form.is_valid():
        form.save()
        return redirect('dashboardPage')
    return render(request, 'tabacchino/admin/update_tabacchi_admin.html', {'form': form, 'tabacchi': tabacchi })

In urls.py: 

urlpatterns = [
    ....
    path('updateTabacchi/', views.updateTabacchi, name='updateTabacchiPage'),
    ....



in forms.py

class TabacchinoForm(forms.ModelForm):
    nome = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    cognome = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    indirizzo = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    telefono = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    email = forms.EmailField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    nome_tabacchi = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'xxx'}))
    attivo = forms.BooleanField(required=False)
    #pub_date = forms.DateTimeField(auto_now_add=True)

    class Meta:
        model = Tabacchino
        #fields = "__all__"
        fields = ['nome', 'cognome', 'indirizzo', 'telefono', 'email', 'nome_tabacchi', 'attivo']




In the template:

<form class="form-horizontal" role="form" method="POST">
    {% csrf_token %}
    {{ form}}

    <div class="form-group last">
       <div class="col-sm-offset-5 col-sm-9">
           <button type="submit" class="btn btn-success btn-sm">
              submit </button>
       </div>
   </div>
</form>







When I do submit from template I get:

postalgps.models.Tabacchino.DoesNotExist: Tabacchino matching query does not exist.

where is the mistake?

Thanks in advance

[Perchouli]

Hi Ciuni,

Maybe your url already is path('updateTabacchi/<tabacchi_id>', I think question is {{ form }}.

{{ form }} is to render fields without id. Add the <input /> if you want to get the id from request.POST:

<form class="form-horizontal" role="form" method="POST">
    {% csrf_token %}

    <input name="tabacchi_id" value="{{ tabacchi.id }}" />
    {{ form}}

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