Question

我正在尝试通过父模型从子模型获取数据，我不知道是否有可能或有办法做到这一点，并且我想知道如何在这种情况下实现表单集概念，对于任何解决方案将不胜感激

models.py

class Client_Data(models.Model):
     RC = models.CharField(max_length=50)
     Raison_social = models.CharField(max_length=254)
     NIF = models.CharField(max_length=50,unique=True)
     AI = models.CharField(max_length=50,unique=True)
     NIS = models.CharField(max_length=50,unique=True)
     Banque = models.CharField(max_length=50,unique=True)
     CB = models.CharField(max_length=50)
     adresse = models.CharField(max_length=50)
     slug = models.SlugField(blank=True, unique=True)
     active = models.BooleanField(default=True)


class Contact(models.Model):
     client = models.ForeignKey(Client_Data,blank=True,on_delete=models.CASCADE)
     Nom = models.CharField(max_length=50)
     post = models.CharField(max_length=50)
     Tel = models.CharField(max_length=50)
     email = models.EmailField(max_length=255,unique=True)
     contact_type = models.CharField(default='Client_contact',max_length=50)

views.py


def save_client_form(request, form,Contact_form, template_name):
    data = dict()
    if request.method == 'POST':
        if form.is_valid() and Contact_form.is_valid():
            client = form.save()
            contact = Contact_form.save(commit=False)
            contact.client = client
            contact.save()
            form.save()
            Contact_form.save()

            data['form_is_valid'] = True
            books = Client_Data.objects.all()
            data['html_book_list'] = render_to_string('Client_Section/partial_client_c.html', {
                'client': books
            })
        else:
            print(form.errors)
            print(Contact_form.errors)
            data['form_is_valid'] = False
    context = {'form': form,'contact_form':Contact_form}
    data['html_form'] = render_to_string(template_name, context, request=request)
    return JsonResponse(data)


def client_update(request,slug):
    book = get_object_or_404(Client_Data, slug=slug)
    contact = Contact.objects.select_related().filter(client=book.id)
    print(contact)

    if request.method == 'POST':
        form = ClientForm(request.POST, instance=book)
        contact_form = Contact_Form(request.POST, instance=contact)
    else:
        form = ClientForm(instance=book)
        contact_form = Contact_Form(instance=contact)
    return save_client_form(request, form,contact_form ,'Client_Section/partial_client_update.html')

Answer 1

如果我对您的理解正确，那么您可以这样做：

contact = Contact.objects.select_related().filter(client=book.id)
addresse = contact.client.addresse

Answer 2

在您view.py

from django.forms import inlineformset_factory
from django.shortcuts import render, get_object_or_404

def client_update(request, slug):
    context = {}
    book = get_object_or_404(Client_Data, slug=slug)
    formset = inlineformset_factory(Client_Data, Contact, form=Contact_Form )
    if request.method == 'POST':
        form = ClientForm(request.POST, instance=book)
        contactforms = formset(request.POST, prefix='contactformset', instance=book)
        context['form'] = form
        context['contactforms'] = contactforms
        if contactforms.is_valid() and form.is_valid():
            form.save()
            contactforms.save()
            return HttpResponse("your data saved")
        else:
            return render(request, 'Client_Section/partial_client_update.html', context)
    else:
        form = ClientForm(instance=book)
        contactforms = formset(prefix='contactformset', instance=book)
        context['form'] = form
        context['contactforms'] = contactforms
        return render(request, 'Client_Section/partial_client_update.html', context)

partial_client_update.html

    <form method="POST">
    {% csrf_token %}

    {{form}}
    <hr>
    {% formset in contactforms %}
    {{formset }}
    <hr>
    {% endfor %}

   <button type="submit ">update</button>
   </form>

如何在Python中从父模型访问子模型

2 个答案: