Django数据库读取出下拉框的数据源

1.  实体类获取数据源，元组和列表 这个类型搞死人，下面的还插入了一个下拉框的默认值

# 职员信息
class PersonInfo(models.Model):
    name = models.CharField(u'姓名',max_length=10, default='')
    position = models.CharField(u'所在位置',max_length=50, default='')
    contact = models.CharField(u'联系方式',max_length=50, default='')
    pc_mac = models.CharField(u'MAC',max_length=20, default='')
    pc_ip = models.CharField(u'IP4',max_length=20, default='')

    def getPersonDropDownList(self):
        return tuple( [(0,'无')] + list(PersonInfo.objects.values_list('id','name')))

 

2.  表单绑定数据源 choices= app.models.PersonInfo().getPersonDropDownList()

class HardwareForm(ModelForm):
    class Meta:
        model = app.models.HardwareInfo
        fields = ('serial_number','person_id','position','system_os','pc_score','pc_cpu','pc_memory','use_time','pc_description')
    def __init__(self, *args, **kwargs):
        super(HardwareForm, self).__init__(*args, **kwargs)
        self.fields['serial_number'].widget = forms.TextInput({'class': 'form-control'})
        self.fields['person_id'].widget = forms.Select({'class': 'form-control'},choices= app.models.PersonInfo().getPersonDropDownList())