Question

我是web-dev的新手，并被要求使用Django和Ajax编写调查。我在数据库中更新值时遇到了一些麻烦。如图所示

this screenshot of CMD

我的SQL值始终为空白，即使打印了值（RxCx是从request.POST.get获得的值）

Models.py

class Office(models.Model):
    Office_Space = (
        ('R1B1', 'R1B1'),
        ('R2B1', 'R2B1'),
        ('R3B1', 'R3B1'),
        ('R1B2', 'R1B2'),
        ('R2B2', 'R2B2'),
        ('R3B2', 'R3B2'),
        ('R1B3', 'R1B3'),
        ('R2B3', 'R2B3'),
        ('R3B3', 'R3B3')
    )
    space = models.CharField(max_length=4, choices=Office_Space)

Forms.py

 from django import forms
 from Survey.models import Office 

 class officeForm(forms.ModelForm):
     class Meta:
         model = Office
         fields = ['space',]

视图中的功能（视图编写得很差，但如果我以其他方式执行，则表单最终无效...）

def get_Office(request):
    form_class = officeForm

    if request.method == 'POST':
        space = request.POST.get('result')  
        response_data = {}      
        print(space) # here is the RxCx printed for debugging
        response_data['space'] = space
        form = Office()
        form.save()
        print (connection.queries) #the SQL log          
        return JsonResponse(response_data)
    else:
        form = officeForm()
    return render(request, 'Front.html', {'officeform': form})

提前致谢。

Answer 1

你没有传递form任何数据（！），这就是为什么它是空的。为了工作，请转到form response_data字典。像这样：

form = Office(response_data)

更正：上述行仍然不起作用，因为Office是模型，您需要声明为form_class的表单。所以，

form = form_class(response_data)

甚至更好，删除form_class = officeForm行，然后写下：

form = officeForm(response_data)

Answer 2

view.py

def get_Office(request):
    form_class = officeForm(request.POST or None)

    if request.method == 'POST':
        if form_class.is_valid():
            space = request.POST.get('result')  
            response_data = {}      
            print(space) # here is the RxCx printed for debugging
            response_data['space'] = space
            form_class.save()
            print (connection.queries) #the SQL log          
            return JsonResponse(response_data)

    return render(request, 'Front.html', {'officeform': form_class})

Django查看数据库值仍然是＆＃39; \＆＃39; \

2 个答案: