過濾對象

Question

很多時候，我發現自己寫類似的代碼：

query = MyModel.objects.all() 
if request.GET.get('filter_by_field1'): 
    query = query.filter(field1 = True) 
if request.GET.get('filter_by_field2'): 
    query = query.filter(field2 = False) 
field3_filter = request.GET.get('field3'): 
if field3_filter is not None: 
    query = query.filter(field3 = field3_filter) 
if field4_filter: 
    query = query.filter(field4 = field4_filter) 
# etc... 
return query 

有建築物查詢的更好的，更通用的方法，如上面的那個？

Answer 1

如果是以往任何時候都將在請求得到的唯一的事情是可能的查詢參數，你可以這樣做：

query = MyModel.objects.filter(**request.GET)