Django设置默认的表单值

我有一个模型如下:

class TankJournal(models.Model):
    user = models.ForeignKey(User)
    tank = models.ForeignKey(TankProfile)
    ts = models.IntegerField(max_length=15)
    title = models.CharField(max_length=50)
    body = models.TextField()

我也有上面模型的模型表单如下:

class JournalForm(ModelForm):
    tank = forms.IntegerField(widget=forms.HiddenInput()) 

    class Meta:
        model = TankJournal
        exclude = ('user','ts')

我想知道如何设置坦克隐藏字段的默认值。下面是到目前为止显示/保存表单的函数:

def addJournal(request, id=0):
    if not request.user.is_authenticated():
        return HttpResponseRedirect('/')

    # checking if they own the tank
    from django.contrib.auth.models import User
    user = User.objects.get(pk=request.session['id'])

    if request.method == 'POST':
        form = JournalForm(request.POST)
        if form.is_valid():
            obj = form.save(commit=False)

            # setting the user and ts
            from time import time
            obj.ts = int(time())
            obj.user = user

            obj.tank = TankProfile.objects.get(pk=form.cleaned_data['tank_id'])

            # saving the test
            obj.save()

    else:
        form = JournalForm()

    try:
        tank = TankProfile.objects.get(user=user, id=id)
    except TankProfile.DoesNotExist:
        return HttpResponseRedirect('/error/')

当前回答

如果你从POST创建modelform，初始值可以这样分配:

form = SomeModelForm(request.POST, initial={"option": "10"})

https://docs.djangoproject.com/en/1.10/topics/forms/modelforms/#providing-initial-values

2015-02-12 18:18:27

其他回答

你可以使用Form。首字母，这里有解释。

你有两个选择，要么填充值时调用表单构造函数:

form = JournalForm(initial={'tank': 123})

或者在表单定义中设置该值:

tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)

2009-03-02 22:29:46

如果你从POST创建modelform，初始值可以这样分配:

form = SomeModelForm(request.POST, initial={"option": "10"})

https://docs.djangoproject.com/en/1.10/topics/forms/modelforms/#providing-initial-values

2015-02-12 18:18:27

其他解决方案:创建表单后设置初始值:

form.fields['tank'].initial = 123

2018-03-30 13:39:42

我有这个其他的解决方案(我张贴它以防其他人像我一样使用下面的方法从模型):

class onlyUserIsActiveField(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(onlyUserIsActiveField, self).__init__(*args, **kwargs)
        self.fields['is_active'].initial = False

    class Meta:
        model = User
        fields = ['is_active']
        labels = {'is_active': 'Is Active'}
        widgets = {
            'is_active': forms.CheckboxInput( attrs={
                            'class':          'form-control bootstrap-switch',
                            'data-size':      'mini',
                            'data-on-color':  'success',
                            'data-on-text':   'Active',
                            'data-off-color': 'danger',
                            'data-off-text':  'Inactive',
                            'name':           'is_active',

            })
        }

首字母在__init__函数中定义为self.fields['is_active']。initial = False

2018-04-03 00:17:03

我希望这能帮助到你:

form.instance.updatedby = form.cleaned_data['updatedby'] = request.user.id

2020-03-06 08:23:06

Django设置默认的表单值

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