基于user.has_perms从数据库填充Django Choice字段

时间:2013-09-23 23:51:08

标签: python django

我正在尝试根据用户权限更新选择字段。我有一个布尔字段,如果标准用户看到False(默认)。否则,如果用户拥有该权限,我想显示所有内容。

views.py

class ExportFormView(FormView):

    template_name = 'export.html'
    form_class = ExportForm
    success_url = '/'

    def get_form_kwargs(self):
         kwargs = super(ExportFormView, self).get_form_kwargs()
         kwargs.update({
             'request' : self.request
         })
         return kwargs

forms.py

class ExportForm(forms.Form):
    def __init__(self, request, *args, **kwargs):
        self.request = request
        super(ExportForm, self).__init__(*args, **kwargs)

    choice_list = []

    if request.user.has_perms('tracker.print_all'):
        e = Muid.objects.values('batch_number').distinct()
    else:
        e = Muid.objects.values('batch_number').distinct().filter(printed=False)
    for item in e:
        choice = item['batch_number']
        choice_list.append((choice, choice))

    batch_number = forms.ChoiceField(choices = choice_list)

我得到错误:

NameError at /
name 'request' is not defined

任何帮助将不胜感激,我已经坚持了一段时间了(并尝试了很多google搜索SO建议/答案。)

1 个答案:

答案 0 :(得分:2)

了解如何做到这一点,仍然对其他方式感兴趣。

使用pdb,我发现视图设置正确。但我不得不改变形式。我无法从函数外部访问变量,如__init__,其他函数也应该能够访问变量,但我需要在init上创建表单,所以我不能等待函数调用。

代码:

<强> Views.py

class ExportFormView(FormView):

template_name = 'export_muids.html'
form_class = ExportForm
success_url = '/'

def get_form_kwargs(self):
    kwargs = super(ExportFormView, self).get_form_kwargs()
    kwargs.update({
         'request' : self.request
    })
    return kwargs

<强> forms.py

class ExportForm(forms.Form):
    def __init__(self, request, *args, **kwargs):
        self.request = request
        choice_list = []

        if request.user.has_perms('tracker.print_all'):
            e = Muid.objects.values('batch_number').distinct()
        else:
            e = Muid.objects.values('batch_number').distinct().filter(exported=False)
        for item in e:
            choice = item['batch_number']
            choice_list.append((choice, choice))
        super(ExportForm, self).__init__(*args, **kwargs)
        self.fields['batch_number'] = forms.ChoiceField(choices = choice_list)