Question

好吧，伙计们，我被困住了。

我遇到的问题如下：我有两个模型，RelenvaceCodingRecord和EventRecord 用户应该能够选择文章是否相关。如果是，则表格的其他字段应该是必需的，如果不是=没有必填字段。这必须在一个表单中，在同一页面上，没有JS。

到目前为止，我所做的是创建一个包含两个模型的许多字段的表单（forms.Form）。在this篇文章之后，我尝试实现条件required逻辑：

class CodingForm(forms.Form):
    relevance = forms.BooleanField(required=False)
    event_date = forms.DateField('Event Date',required=False)
    location = forms.ModelChoiceField(queryset=Location.objects.all(), empty_label=None, required=False)
    actors = forms.CharField(max_length=100, required=False)
    party = forms.NullBooleanField('Party')
    labor_org = forms.NullBooleanField('Labor Organization')
    property_dmg = forms.NullBooleanField('Property Damage')
    violence = forms.NullBooleanField('Violence')
    injured = forms.IntegerField(required=False)
    deaths = forms.IntegerField(required=False)
    participants_num = forms.IntegerField(required=False)
    participants_str = forms.IntegerField(required=False)
    anti_gov = forms.NullBooleanField('Anti Government')
    presence = forms.NullBooleanField('Presence')
    intervene = forms.NullBooleanField('Intervention')
    brutality = forms.NullBooleanField('Brutality')
    arrests = forms.NullBooleanField('Arrests')
    issue = forms.CharField(max_length=100,required=False)
    url = forms.CharField(max_length=100,required=False)

    def __init__(self, data=None, *args, **kwargs):
        super(CodingForm, self).__init__(data, *args, **kwargs)

        if data and data.get('relevance', None) == True:
            self.fields['event_date'].required = True
            self.fields['location'].required = True
            self.fields['anti_gov'].required = True

在我看来，然后，我尝试获取表单并将其值传递给RelevanceCodingRecord和EventRecord的两个ModelForms并将其全部保存：

if request.method == 'POST':
    if 'coding' in request.POST:
    event_form = EventRecordForm(request.POST, prefix='event')
    relevance_form = RelevanceCodingRecordForm(request.POST, prefix='event')
    coding_form = CodingForm(request.POST, prefix='coding')

    if coding_form.is_valid():
        obj = coding_form.save(commit=False)
        event = event_form.save(commit=False)
        relevance = relevance_form.save(commit=False)

        # Relevance Data
        relevance.relevance = obj.relevance
        relevance.screened = True
        relevance.classified = True
        relevance.coder = request.user.coder
        relevance.article = paginator.page(page).object_list[0]
        relevance.last_updated = datetime.datetime.today
        relevance.save()

        if relenvace.relevance == True:
        # Event Data
            event.article = paginator.page(page).object_list[0]
            event.event_date = obj.event_date
            event.country = paginator.page(page).object_list[0].country
            event.location = obj.event_location
            event.actors = obj.actors
            event.party = obj.party
            event.labor_org = obj.labor_org
            event.property_dmg = obj.property_dmg
            event.violence = obj.violence
            event.injured = obj.injured
            event.deaths = obj.deaths
            event.participants_num = obj.participants_num
            event.participants_str = obj.participants_str
            event.anti_gov = obj.anti_gov
            event.presence = obj.presence
            event.intervene = obj.intervene
            event.brutality = obj.brutality
            event.arrests = obj.arrests
            event.issue = obj.issue
            event.url = paginator.page(page).object_list[0].source
            event.coder = request.user.coder
            event.last_updated = datetime.datetime.today
            event.save()

            redirect_to = "?page=%s" % page
            return HttpResponseRedirect(redirect_to)
        else:
            redirect_to = "?page=%s" % page
            return HttpResponseRedirect(redirect_to)

else:
    coding_form = CodingForm(prefix='coding')
    coding_form.fields["location"].queryset = Location.objects.filter(ccode=country).order_by('name')

然而，这不起作用：我的数据库中没有创建记录，我只被重定向有没有办法让这项工作完全成功？或者我在这里傻瓜差事？从一种形式传递到另一种形式的大多数数据也不是DRY，但我不知道更好的方法。

非常感谢任何帮助！

Answer 1

由于coding_form不是ModelForm的实例，因此coding_form.save()将不起作用，并且不会返回模型实例。您可以使用coding_form.cleaned_data字典访问表单数据。

通过中间形式保存到两个模型 - Django

1 个答案: