Django 1.6：'instancemethod'对象没有属性'__getitem__'

Question

我在我的模板中有一个下拉菜单，我试图存储用户选择过滤医生对象。不过，我不断收到此错误：

Traceback: 
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response 
    114.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "/Library/Python/2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view 
    57.   return view_func(*args, **kwargs) 
File "views.py" in doclistings 
    91.  if request.session.get["selection"] == "Dentist": 

Exception Type: TypeError at /doclistings/ 
Exception Value: 'instancemethod' object has no attribute '__getitem__' 

这里是指数模板

<div class="signup"> 
      <div class="form-group"> 
      <form action="/doclistings/" method="get" > 
      <select class="form-control" id="selection" name="selection"> 
       <option><b>Find a Doctor...</b></option> 
       {% for value, text in form.selection.field.choices %} 
       <option value="{{ value }}">{{ text }}</option> 
       {% endfor %} 
       {% csrf_token %} 
      </select> 

这里就是我想过滤器的基础上选择doclisting意见

def doclistings(request): 
    d = getVariables(request) 
    doctors = Doctor.objects.all().order_by('-likes') 
    paginator = Paginator(doctors, 20) #Show 20 doctors per page 
    page = page = request.GET.get('page') 
    # print request.session["selection"] 
    # print request.session.get("selection", None) 

    if request.session.get["selection"] == "Dentist": 
     doctors = Doctor.objects.filter(specialization = "Dentist").order_by('-likes') 

    try: 
     doctors = paginator.page(page) 
    except PageNotAnInteger: 
     doctors = paginator.page(1) 
    except EmptyPage: 
     doctors = paginator.page(paginator.num_pages) 
    d['doctors'] = doctors 
    d['paginator'] = paginator 

    return render_to_response('meddy1/doclistings.html',d) 

的医生模型具有专业化属性，我试图根据用户选择过滤医生。

Answer 1

get是一种方法

request.session.get('selection')