Django设置默认表单值
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03-07-2019 - |
题
我的模型如下:
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()
我还有上述模型的模型表格如下:
class JournalForm(ModelForm):
tank = forms.IntegerField(widget=forms.HiddenInput())
class Meta:
model = TankJournal
exclude = ('user','ts')
我想知道如何设置该坦克隐藏字段的默认值。这是我到目前为止显示/保存表单的功能:
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/')
解决方案
您可以使用初始,此处
调用表单构造函数时,有两个选项可以填充值:
form = JournalForm(initial={'tank': 123})
或在表单定义中设置值:
tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)
其他提示
其他解决方案:创建表单后设置初始值:
form.fields['tank'].initial = 123
如果要从POST值创建modelform,可以通过以下方式指定initial:
form = SomeModelForm(request.POST, initial={"option": "10"})
https://docs.djangoproject。 COM / EN / 1.10 /主题/形式/ modelforms /#提供-初始值
我有另外一个解决方案(我发布的是以防其他人为我使用模型中的以下方法):
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',
})
}
初始值在 __ init __
函数中定义为 self.fields ['is_active']。initial = False
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