Question

我有以下表格：

class PlayForwardPageForm(forms.ModelForm):        
    def __init__(self, *args, **kwargs):
        super(PlayForwardPageForm, self).__init__(*args, **kwargs)

    class Meta:
        model = PlayForwardPage
        exclude = ( 'id',)

    def save(self, *args, **kwargs):     
        post = super(PlayForwardPageForm, self).save(*args, **kwargs)
        post.save()

并查看显示它：

object = PlayForwardPage.objects.all()[0]
form = PlayForwardPageForm(instance=object)

if request.method == "POST":
    form = PlayForwardPage(data=request.POST, instance=object)
    if form.is_valid():
        form.save()
        return HttpResponseRedirect(reverse('manage_playforward',))
else:
    form = PlayForwardPageForm(instance=object)

加载页面时一切正常。但是当我尝试使用更改的数据保存表单时，我得到：

'data' is an invalid keyword argument for this function

任何人都可以看到任何原因或此行为吗？

Answer 1

简答：PlayForwardPage是一个不是ModelForm的模型。

这是更正的代码，带有一些额外的样式注释。

# Don't shadow built-ins (in your case "object")
play_forward_page = PlayForwardPage.objects.all()[0]
# Don't need this form declaration.  It'll always be declared below. form = PlayForwardPageForm(instance=object)

if request.method == "POST":
    # Should be a the form, not the model.
    form = PlayForwardPageForm(data=request.POST, instance=play_forward_page)
    if form.is_valid():
        form.save()
        return HttpResponseRedirect(reverse('manage_playforward',))
else:
    form = PlayForwardPageForm(instance=play_forward_page)

另外，你在PlayForwardPageForm中做了一些不必要的事情：

class PlayForwardPageForm(forms.ModelForm):        

# This __init__ method doesn't do anything, so it's not needed.
#    def __init__(self, *args, **kwargs):
#        super(PlayForwardPageForm, self).__init__(*args, **kwargs)

    class Meta:
        model = PlayForwardPage
        exclude = ( 'id',)

#  You don't need this since you're not doing anything special.  And in this case, saving the post twice.
#    def save(self, *args, **kwargs):     
#        post = super(PlayForwardPageForm, self).save(*args, **kwargs)
#        post.save()

表单不允许编辑

1 个答案: