Django - 全局名称未定义错误

Question

我有一个NameError: global name 'CreateMapForm' is not defined错误，但是它是间歇性的。

我不明白这一点，因为在我的python IDE中一切似乎都很好。 CreateMapForm只是一个简单的ModelForm。任何人都可以指出这个问题的原因，或者建议在哪里寻找原因？

地图/ views.py：

from maps.forms import * 

@login_required(login_url='/accounts/login/') 
def createMap(request, folder_id): 
    folder = Folder.objects.get(pk=folder_id, created_by=request.user) 

    if type(folder) != Folder: 
     folder = folder.parent 

    nodes = folder.get_ancestors(include_self=True) 

    form = CreateMapForm() #this line cause the error 
    html = render_to_string("basqui/manage_maps_create.html", {'folder': folder, 'nodes': nodes, 'form': form}, context_instance=RequestContext(request)) 
    response = json.dumps({'html': html}) 

    if request.POST: 
     form = CreateMapForm(request.POST) 
     if form.is_valid(): 
      instance = form.save(commit=False) 
      instance.created_by = request.user 
      instance.parent = folder 
      instance.save() 
      response = json.dumps({"map": {"pk": instance.pk, "name": instance.name}}, cls=DjangoJSONEncoder) 
     else: 
      html = render_to_string("basqui/manage_maps_create.html", {'folder': folder, 'nodes': nodes, 'form': form}, context_instance=RequestContext(request)) 
      response = json.dumps({'html': html}) 

    return HttpResponse(response, content_type="application/json") 

地图/ forms.py

from django import forms 
from maps.models import * 

class CreateMapForm(forms.ModelForm): 
    class Meta: 
     model = BasquiMap 
     fields = ('name', 'layers', 'wms') 

Answer 1

正如你在CreateMapForm()的forms你需要将其导入views所以添加以下views：

from maps import forms 

并替换如下：

form = CreateMapForm() 

有：

form = forms.CreateMapForm()