Django Admin：如何訪問admin.py中的請求對象，以獲取list_display方法？

Question

我添加了一個方法「highlight_link」我的模型admin.py類：

class RadioGridAdmin(admin.ModelAdmin): 

    list_display = ('start_time', highlight_link) 

    def highlight_link(self): 
     return ('some custom link') 


admin.site.register(RadioGrid, RadioGridAdmin) 

它返回一個自定義鏈接（我已經離開了爲簡潔highlight_link.short_description）每個記錄的變化返回名單。這很棒。但我想檢查當前的查詢字符串，並根據此更改自定義鏈接。有沒有辦法在'highlight_link'中訪問Request對象？

Answer 1

我試過了其他答案留在這裏，遇到的問題對我來說變得越來越複雜。我玩了def __call__()，想出了以下內容。這可能不是這樣做的正確的方式，但它的作品...

搶GET變量這裏（內如上面我最初的職位描述類RadioGridAdmin全部）：

def __call__(self, request, url): 
    global start_date 
    start_date = request.GET['param'] 

    return super(RadioGridAdmin, self).__call__(request, url) 

和自這是全球性的，你可以在這裏現在訪問：

def highlight_link(self): 
    # access start_date here 

Answer 2

沒有直接的方法來實現這一點。我看到2種可能的解決方案

• 使用一個線程當地人商店同一請求對象

  from django.utils._threading_local import locals 
  
  globals = locals() 
  
  class RadioGridAdmin(admin.ModelAdmin): 
      def __call__(self, request, *args, **kwargs): 
       globals['radio_grid_admin_request'] = request 
       return super(RadioGridAdmin, self).__call__(request, *args, **kwargs) 
  
      def highlight_link(self): 
       request = globals['radio_grid_admin_request'] 
       # request.GET processing 
       return ('some custom link') 
  

• 如果使用簡單的非線程的Django安裝，可以請求對象就像儲存屬性：

  class RadioGridAdmin(admin.ModelAdmin): 
      def __call__(self, request, *args, **kwargs): 
       self.request = request 
       return super(RadioGridAdmin, self).__call__(request, *args, **kwargs) 
  
      def highlight_link(self): 
       # self.request.GET processing 
       return ('some custom link') 
  

Answer 3

class RadioGridAdmin(admin.ModelAdmin): 

    def highlight_link(self, obj): 
     return (self.param) 

    def changelist_view(self, request, extra_context=None): 
     self.param = request.GET['param'] 
     return super(RadioGridAdmin,self).changelist_view(request, extra_context=extra_context) 

Answer 4

有什麼不對的：

def highlight_link(self, request): 
    # access start_date here 

Answer 5

我SOLV這是我的問題。 HTTPS：//代碼

class MyClassAdmin(admin.ModelAdmin): 

    def queryset(self, request): 
     qs = super(MyClassAdmin, self).queryset(request) 
     self.request = request 
     return qs 

現在我可以在任何地方

UPDATE

Changed in Django 1.6: The get_queryset method was previously named queryset.

class MyClassAdmin(admin.ModelAdmin): 

    def get_queryset(self, request): 
     qs = super(MyClassAdmin, self).get_queryset(request) 
     self.request = request 
     return qs 

Answer 6

import threading 

_thread_local = threading.local() 

def get_thread_local_request(): 
    return getattr(_thread_local, "request", None) 

class RadioGridAdmin(admin.ModelAdmin): 
    list_display = ('display_field', ...) 

    def display_field(self, obj): 
     # ... 
     request = get_thread_local_request() 
     # ...