Question

我正在尝试创建一个简单的收件箱应用程序，允许用户使用UserModel发送彼此的消息。

如何在formset的隐藏字段中填充查询集中所有对象的id？因为当我尝试

时

File "C:\mysite\pet\views.py" in message
 913.     initial.update({'hidden_field': messages.id})

异常类型：/ message /的AttributeError 异常值：'function'对象没有属性'id'

class Message(models.Model):
    user = models.ForeignKey(User, related_name='sender')
    recipient = models.ForeignKey(User, related_name='recipient')
    created = models.DateTimeField(auto_now_add=True)
    body = models.CharField(max_length=1000)
    read = models.BooleanField(default=False)
    trash = models.BooleanField(default=False)
    sentmessage = models.BooleanField(default=False)
    thread = models.ForeignKey(Thread,blank=True,null=True)
    draft = models.BooleanField(default=False)


    def __unicode__(self):
        return self.body

视图

@login_required
def message(request):    
    person = Person.objects.get(user=request.user)
    messages = Message.objects.filter(recipient=request.user.id).order_by("-created").values    
    initial = {}
    initial.update({'hidden_field': messages.id})

    form = formset_factory(CheckBoxForm)
    formset = form(initial=initial)
    return render(request,'messages.html',{'messages':messages,'form':form,'person':person})

形式

class CheckBoxForm(forms.Form):
    checkbox = forms.BooleanField(required=False)
    hidden_field = forms.CharField(widget=forms.HiddenInput())

模板

     {% for m in messages %}
    {{m.body}}
   {% endfor %}

@ new code

 @login_required
 def message(request):    
     messages = Message.objects.filter(recipient=request.user).order_by("-created")  

     form = CheckBoxForm()
     if request.method =='POST':
         form = ReplyForm(request.POST)
         if form.is_valid():
             id = request.POST.get('hidden_field', False)
             Message.objects.filter(pk=id).delete()
     return render(request,'messages.html',     {'messages':messages,'form':form,'person':person})

Answer 1

老实说，我会用javascript做到这一点。也许这不是最好的方式，或者实际上是最好的方式，但它仍然是一种方式。

模板：

<head> 
<script>
checkbox=getelementbyId('#container');
var itemlist= [];
function togglelist(newitem){
    field=getelementbyId('#'+newitem);
if (!field.value){
        itemlist.push(newitem)
}
else{
   itemlist.remove(itemlist.indexOf(newitem))
};
checkbox.innerHTML="<input type='hidden' id='checkbox' label='hidden_field' value='"+String(itemlist)+"'>";

}
</script>
</head>
<body>
<div id="container"> </div>
{% for m in messages %}
<input type="checkbox" id="{{m.id}}" onchange="togglelist({{m.id}})">
{{m.body}}
{% endfor %}

你的models.py你可以摆脱布尔值，只有一个字符字段hidden_field。然后在views.py中使用ast库解析字符串中的列表：

import ast
form = CheckBoxForm()
 if request.method =='POST' and form.is_valid():
         deletelist = request.POST.get('hidden_field', False)
         ids=ast.literal_eval(deletelist)
         for id in ids:
             Message.objects.filter(pk=id).delete()

抱歉，我无法对此进行测试，但我希望它有所帮助。

Django如何在formset隐藏字段中初始化queryset中所有对象的对象ID？

1 个答案: