保存时复制数据库中的数据（Django 形式）

Question

我创建了一个表单，当进入页面时从 json 文件加载初始数据，然后我可以在同一表单中编辑和保存数据。所有工作都很完美，但每次我按下提交按钮时，数据库都会接受两行相同的数据。任何帮助表示赞赏。

views.py

def form_save_and_edit(request, id=None, template_name='create.html'):

""" referring data from "model_from_json()",
making data visible within another function """

func = model_from_json()

""" savind and editing form data in the same form """

form = UserDataForm(request.POST)
if request.POST:

    updated_field = form.save()
    last_name = request.session['last_name'] = updated_field.last_name
    first_name = request.session['first_name'] = updated_field.first_name
    email = request.session['email'] = updated_field.email
    skype = request.session['skype'] = updated_field.skype

    form = UserDataForm({
    'last_name': last_name,
    'first_name': first_name,
    'skype':skype,
    'email':email
    })

    redirect_url = reverse('create')
    message = messages.success(request, "You successfully updated your profile!")
    if form.is_valid():
        form.save()
else:

    form = UserDataForm({
        'last_name': func['last_name'],
        'first_name':func['first_name'],
        'email':func['email'],
        'skype':func['skype'],

        })

    message = messages.success(request, "You just loaded your profile initial data")
return render_to_response('create.html', {'form': form,}, context_instance=RequestContext(request))

Answer 1

您似乎调用了两次 form.save() 语句。一旦在方法的开头，这里：

    updated_field = form.save()

最后还有一个：

    if form.is_valid():
    form.save()

保存时复制数据库中的数据（Django 形式）

Duplicating data in db while saving (Django form)

django

django-templates

django-forms

django-admin

django-views