Django modelformset_factory删除由can_delete标记的对象 [英] Django modelformset_factory deleting objects marked by can_delete

问题描述

您好，我有一个问题，我已经制作了modelformset_factory，并且在选项中选择了can_delete = True，现在我不知道如何删除标记为 DELETE的对象：True可以从数据库中删除它们。我试图以某种方式做到这一点，但没有奏效。我也在Django formsetmodels文档中寻找它，但这并没有帮助我。使用此选项can_delete = True，我会在html页面中获得其他复选框删除并标记他仅在控制台上打印我：
{'username'：'sw'，'email'：'[e-mail]' ，'city'：'ss'，'code'：12345，'id'：，'DELETE'：False}

Hello I have got question I have made modelformset_factory and in options I have choosen can_delete = True and now I don't know how to delete marked objects as 'DELETE' : True to delete them from database. I was trying to do this in some ways and it didnt work. I was looking for it also in django formsetmodels documentation but this didnt help me. With this option can_delete = True I get additional checkbox in my html page Delete and marking him only prints me in console on print: {'username': 'sw', 'email': '[e-mail]', 'city': 'ss', 'code': 12345, 'id': , 'DELETE': False}

将表格保存到数据库中是可行的，但我没有知道如何从数据库中删除标记的表单。

Saving forms to database is working but I dont know how to delete marked forms from database.

我将非常感谢每一个帮助。

I would be very thankful for every help.

我有从models.py

I have made modelformset_factory from model in models.py

class TestModel(models.Model):
username = models.CharField(max_length=120)
email = models.EmailField()
city = models.CharField(max_length=120)
code = models.IntegerField()
#W admin panelu za miast TestModel object bedzie username
def __str__(self):
    return self.username

然后在我的views.py函数中添加：

Then I have added in my views.py function:

def django_modelformset(request):
TestModelFormset = modelformset_factory(TestModel, fields=['username', 'email', "city",
                                                           "code"], extra=1, can_delete=True)
formset = TestModelFormset(request.POST or None)

if formset.is_valid():
    for form in formset:
        print(form)

        print(form.cleaned_data)
        form.save()
context = {"formset": formset}
return render(request, "modelformset.html", context)

我的modelformset.html看起来像这样：

My modelformset.html looks like this:

<form method="POST" action="">
{% csrf_token %}

{{ formset.management_form}}
{% for form in formset %}
<div>

    {{ form.as_p }}
    <hr/>
</div>
{% endfor %}
<input type="submit" value="Save">

推荐答案

我个人没有必要这样做，但是从文档看来，您有几种选择。

I haven't personally had to do this, but from the docs it seems you have a few options.

1. 在表单集而不是每个表单上调用保存。

1. Call save on the formset instead of each form.

if formset.is_valid():
    formset.save()

如果必须遍历每种形式，则可能会这样。

If you must loop through each form you could something like this.

if formset.is_valid():
   for form in formset:
       print(form.cleaned_data)
       if form.cleaned_data["DELETE"]:
           # Do what you want with the form data
           # i.e. get the object from the database and delete it.
       else:
           form.save()

通过

Loop through the deleted forms separately.

if formset.is_valid():        
    forms = formset.save(commit=False)
    for object in formset.deleted_objects:
        object.delete()

这篇关于Django modelformset_factory删除由can_delete标记的对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！