[英]How to convert modelchoicefield to charfield in django admin?
[英]django: how to get value from CharField and ModelChoiceField
我有一个GroupAdminForm类,用于扩展Django中的组管理页面。 有两个字段,selected_to_change和print_name。 我要设计的是在“ selected_to_change”中选择一列,并在“ print_name”中输入字符名称,以便进行如下查询:
UPDATE "annotation"
SET print_name= "value of print_name"
WHERE id = "value of selected_to_change";
这是GroupAdminForm:
class GroupAdminForm(forms.ModelForm):
users = forms.ModelMultipleChoiceField(queryset=User.objects.all(),
widget=FilteredSelectMultiple('Users', False),
required=False)
select_to_change = forms.ModelChoiceField(queryset=Annotation.objects.all(), required=False)
print_name = forms.CharField(required=False)
class Meta:
model = Group
def __init__(self, *args, **kwargs):
instance = kwargs.get('instance', None)
if instance is not None:
initial = kwargs.get('initial', {})
initial['users'] = instance.user_set.all()
initial['locations'] = instance.c_locations.all()
kwargs['initial'] = initial
super(GroupAdminForm, self).__init__(*args, **kwargs)
def save(self, commit=True):
group = super(GroupAdminForm, self).save(commit=commit)
if commit:
group.user_set = self.cleaned_data['users']
else:
old_save_m2m = self.save_m2m
def new_save_m2m():
old_save_m2m()
group.user_set = self.cleaned_data['users']
self.save_m2m = new_save_m2m
return group
如何从CharField和ModelChoiceField中获取值以在方法save()中进行此类查询? 谢谢。
您已经在self.cleaned_data中使用保存的表单中的数据。
print self.cleaned_data['select_to_change']
print self.cleaned_data['print_name']
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