如何使用从变量中获得的默认值自动填充模型表单字段？

Question

    我正在使用 ModelForm，我想用一个初始值填充我的 dataset_id 字段，该初始值将来自争论中传递的“pid”变量。我已经尝试了一些东西并附加了该代码，但它不起作用views.pydef home(request, pid):    # if this is a POST request we need to process the form data    if request.method == 'POST':        # create a form instance and populate it with data from the request:        form = DelegateForm(request.POST)        # check whether it's valid:        if form.is_valid():            # process the data in form.cleaned_data as required            p = form.save()            # redirect to a new URL:            return HttpResponseRedirect('/')        # if a GET (or any other method) we'll create a blank form    else:         # Here I want to pass the value of "pid" to the dataset_id field so that when it renders it is populated with the value in the pid variable        form = DelegateForm(initial={'dataset_id': pid})    return render(request, 'add_delegate.html', {'dform': form, 'uid': pid})models.pyclass Delegate(models.Model):    dataset_id = models.CharField(max_length=255, null=True, blank=True)    first_name = models.CharField(max_length=255)    last_name = models.CharField(max_length=255, null=True, blank=True)    email = models.CharField(max_length=255, null=True, blank=True)    phone = models.IntegerField(null=True, blank=True)    company = models.CharField(max_length=255, null=True, blank=True)    designation = models.CharField(max_length=255, null=True, blank=True)    address = models.CharField(max_length=255, null=True, blank=True)    city = models.CharField(max_length=255, null=True, blank=True)    pincode = models.IntegerField(null=True, blank=True)    image_path = models.CharField(max_length=2083, null=True, blank=True)forms.py

Answer 1

我的代码中有一些功能冲突，我将它们分开，所以现在我有了解决方案

Answer 2

我想应该在url的签名中使用pid作为参数，以便将其传递给相应的视图（home本例中的视图）。您的 urls 文件将包含

path('home_path/<int:pid>', views.home, name='a')

而不是在视图文件中：

def home(request, pid):
    ...