Question

我正在尝试解决一个小项目，django的新项目。

以下是我的网址：

url(r'^createreceivable/$',views.createreceivables,name = 'createreceivable'),

我的views.py

@login_required
def createreceivables(request):
    if request.method == 'POST':
        rec_form = Receivablesforms(data=request.POST)
        if rec_form.is_valid():
            rec_form.save()
            return render(request,'account/dashboard.html')
    else:
        rec_form = Receivablesforms()

    return render(request,'account/addreceivable.html',{'rec_form':rec_form})

我的model.py

class Receivables(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL)
    receivable_name = models.CharField(max_length=250)
    receivable_address = models.CharField(max_length=250,blank=True)
    receivable_email = models.CharField(max_length=250,blank=True)
    receivable_telephone = models.CharField(max_length=250,blank=True)
    receivable_VAT = models.CharField(max_length=250,blank=True)
    receivable_Service_Tax = models.CharField(max_length=250,blank=True)
    receivable_PAN = models.CharField(max_length=250,blank=True)

forms.py

class Receivablesforms(forms.ModelForm):
    class Meta:
        model = Receivables
        exclude = ('user',)

一切都很完美，除了数据没有保存在数据库中。请指导。

instance=request.user is not working

模板

<form action="." method="post">
{{ rec_form }}
{% csrf_token %}
<p><input type="submit" value="Save Changes"</p>
</form>

Answer 1

由于您排除了用户，因此您需要以某种方式将其取回，否则您的rec_form.save()会出现异常，因为您的模型需要填写user字段。

诀窍是使用save(commit=False)。它会在内存中创建一个对象，但它不会保存它。您只需将user分配给内存中对象并再次保存：

if rec_form.is_valid():
    new_rec = rec_form.save(commit=False)
    new_rec.user = request.user
    new_rec.save()

检查django doc commit=False in save() method。

DB不使用django表单进行更新

1 个答案: