Django 值错误 "The view capstone.views.home didn't return an HttpResponse object. It returned None instead."

Question

我将用户输入表单的数据保存到 Django 的数据库中。当我提交表单时，该值实际上确实保存到数据库中。但我一直收到这个错误。不确定如何解决？

views.py

def home(request):
    if request.method == "GET":
        form_for_post = {'form': PostForm()}
        return render(request, "capstone/home2.html", form_for_post)
    else: 
        if request.method == "POST":
            form = PostForm(request.POST)

        if form.is_valid():
            city = form.cleaned_data['city']
            place = Location.objects.create(username=request.user, city=city,)
            place.save()
        else:
            return render(request, "capstone/home2.html")

models.py

class User(AbstractUser):
    pass

class Location(models.Model):
    city = models.CharField(max_length=500) 
    username = models.ForeignKey('User', on_delete=models.CASCADE, 
    related_name='author', null=True, blank=True)

forms.py:

class PostForm(forms.Form):
    city = forms.CharField(max_length=500)

表格 html:

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

    <label for="city">City:</label><br>
    <input type="text" id="city" name="city"><br>

    <input type="submit" value="Submit">
  </form>

Answer 1

def home(request):
    if request.method == "POST":
        form = PostForm(request.POST)
        if form.is_valid():
            city = form.cleaned_data['city']
            place = Location.objects.create(username=request.user, city=city,)
            place.save()
        else:
            return render(request, "capstone/home2.html",form)
    form_for_post = {'form': PostForm()}
    return render(request, "capstone/home2.html", form_for_post)

试试这个

Answer 2

默认情况下，如果发出请求，它将是一个获取请求，因此不需要添加 if request.method == 'GET' 所以这样做

def home(request):
    form_for_post = {'form': PostForm()}
    if request.method == "POST":
       form = PostForm(request.POST)
       if form.is_valid():
          city = form.cleaned_data['city']
          place = Location.objects.create(username=request.user, city=city,)
          place.save()
          return render(request,"your_page_after_form_successfully_submited")
    return render(request, "capstone/home2.html",form_for_post)

Django 值错误 "The view capstone.views.home didn't return an HttpResponse object. It returned None instead."

Django Value Error "The view capstone.views.home didn't return an HttpResponse object. It returned None instead."

django

django-models

django-forms

django-views