Django表单缓存或重载问题

问题不在于事务/提交等.以第二种形式检索下拉数据的查询是正确的.

Form1(第一页)

class Organization(forms.Form):   
    orgList = getOrgUnitList()     

    orgUnit = forms.CharField(label=u'Organization Name',max_length=50,error_messages={'required':'Organization name is required field.'})
    parentOrg= forms.ChoiceField(label=u'Parent Organization',choices=[(u'Select',u'Select')]+orgList,error_messages={'required':'Organization name is required field.'})

Form2(第二页)

class User(forms.Form):    
    orgUnitList = getOrgUnitList()        

    email = forms.EmailField(label=u'Email',error_messages={'required':'Email is required field'})  
    orgUnit = forms.ChoiceField(label=u'Organizational Unit',choices=orgUnitList,error_messages={'required':'Organizational unit is required field'})

询问

def getOrgUnitList():
    orgUnitList = list(OrganizationUnit.objects.values_list
               ('OrgUnitID','OrgUnitName').order_by('OrgUnitName'))
    return orgUnitList

但当我试图绑定视图中的选择它是有效的
工作代码
*视图*

def user()
    template = get_template('AddUser.html')
    form = AddUser()     
    orgUnitList = getOrgUnitList()                    
    del objAdminUIDA
    form.fields['orgUnit'].widget.choices=orgUnitList
    variables = RequestContext(request,{'form':form})
    output = template.render(variables)
    del form
    return HttpResponse(output)

但我无法给出下拉选项,我希望在form.i需要一个解决方案