Django ContextMixin'超級'對象沒有屬性'get_context_data'

Question

我需要傳遞一些上下文到模板的幾個視圖。上下文從BD使用一些用戶的信息獲取，所以我已經實現了一個具體ContextMixin類：

class CampaignContextMixin(ContextMixin): 
""" 
This mixin returns context with info related to user's campaign. 
It can be used in any view that needs campaign-related info to a template. 
""" 
def get_campaigns(self): 
    # Get the first campaign related to user, can be more in the future 
    return self.request.user.campaign_set.all() 

# Method Overwritten to pass campaign data to template context 
def get_context_data(self, **kwargs): 
    context = super(CampaignContextMixin).get_context_data(**kwargs) 
    campaign = self.get_campaigns()[0] 
    context['campaign_name'] = campaign.name 
    context['campaign_start_date'] = campaign.start_date 
    context['campaign_end_date'] = campaign.end_date 
    context['org_name'] = self.request.user.organization.name 
    context['campaign_image'] = campaign.image.url 
    context['campaign_details'] = campaign.details 
    return context 

然後，我想在我的觀點中使用它，但我發現了一個錯誤：

'super' object has no attribute 'get_context_data'

class VoucherExchangeView(CampaignContextMixin, TemplateView): 
""" 
This view Handles the exchange of vouchers. 
""" 
template_name = "voucher_exchange.html" 

def get_context_data(self, **kwargs): 
    ctx = super(VoucherExchangeView).get_context_data(**kwargs) 
    # add specific stuff if needed 
    return ctx 

我不知道是否是因爲導致錯誤的繼承，還是因爲TemplateView從ContextMixin也繼承。我的目標是重用將廣告系列信息添加到上下文中的代碼。

感謝

Answer 1

您是不是要找

super(CampaignContextMixin, self).get_context_data(**kwargs) 
#super().get_context_data(**kwargs) --> python3