這是我的服務器上的 GET 請求。 HTTP GET /testPage/?persona_name=Aman&key_name=country&key_label=My+Country&key_value=India&Save=Submit 500在這個視圖的幫助下，我從 GET 請求中獲取值。def PersonaSave(request): persona_name = request.GET.get('persona_name',) persona_key = request.GET.get('key_name',) persona_key_value = request.GET.get('key_value',) persona_key_label = request.GET.get('key_label',) persona_submit = request.GET.get('Save',) return( persona_name , persona_key , persona_key_label , persona_key_value , persona_submit現(xiàn)在以下是我檢查具有給定角色名稱的對象是否存在的功能。如果它存在，那么我正在更新值，如果它是一個新的角色，那么我正在創(chuàng)建新的 testPersona 對象。def TestPageView(request): x=PersonaSave(request) persona_name = x[0] persona_key = x[1] persona_key_label=x[2] persona_key_value=x[3] persona_submit=x[4] testPersonaName = TestPersonaName(name=persona_name) testPersonaName.save() if(persona_name is None and persona_key is None and persona_key_label is None and persona_key_value is None): return render(request, 'dashboard/test_page.html') # Below is the function for updating testPersona . elif TestPersonaName.objects.filter(name__case_exact=persona_name).exists(): testpersona = TestPersona.objects.get(name__case_exact=persona_name) if testpersona.key == persona_key: testpersona.label= persona_key_label testpersona.value = persona_key_value testpersona.save()#If persona with new name is detected then saving a new testPersona object. testpersona=TestPersona(name=persona_name,key=persona_key,label=persona_key_label,value=persona_key_value) testpersona.save() return render(request,'dashboard/test_page.html')請您解釋一下為什么我會收到此錯誤以及如何消除此錯誤？提前致謝。
3 回答
ibeautiful
TA貢獻1993條經驗 獲得超6個贊
改變這一行
testpersona = TestPersona.objects.get(name__case_exact=persona_name)
到
testpersona = TestPersona.objects.get(name__name__case_exact=persona_name)
墨色風雨
TA貢獻1853條經驗 獲得超6個贊
確切和模型字段名稱之間應該有2 個下劃線。
假設您正在匹配名為persona_name 的字段
elif TestPersonaName.objects.filter(persona_name__iexact=persona_name).exists():
testpersona = TestPersona.objects.get(persona_name__iexact=persona_name)
iexact 無論大小寫敏感，都匹配值。
猛跑小豬
TA貢獻1858條經驗 獲得超8個贊
最后，在這個問題上花了一整天之后，我能夠知道我在哪里做錯了。
在TestPersona 模型中，有一個字段“name”，它是模型TestPersonaName 的外鍵。這意味著TestPersonaName 的對象將被分配給TestPersona 的“name”字段。所以答案是：
def TestPageView(request):
x=PersonaSave(request)
persona_name = x[0]
persona_key = x[1]
persona_key_label=x[2]
persona_key_value=x[3]
persona_submit=x[4]
if(persona_name is None and persona_key is None and persona_key_label is None and persona_key_value is None):
# Since no paramteres are persent in GET request(i.e Nothing is filled in form), then we will simply render the blank form.
return render(request, 'dashboard/test_page.html')
# Below is the function for updating testPersona .
elif TestPersonaName.objects.filter(name__iexact=persona_name).exists():
testPersonaName_obj = TestPersonaName.objects.filter(name__iexact=persona_name) #Fetching an object from TestPersonaName model where name = persona_name
testpersonaSet = TestPersona.objects.filter(name=testPersonaName_obj) #Passing testPersonaName_obj to 'name' field of TestPersona model because name is foreign key.
for testpersona in testPersonaSet: #testPersonaSet is a QuerySet
if testpersona.key == persona_key: #Checking whether persona with given key is already present or not
# If TestPersona object with given name and give key is already present then we will update the details instead of making a new object.
testpersona.label= persona_key_label
testpersona.value = persona_key_value
testpersona.save()
return render(request,'dashboard/test_page.html')
#If persona with new name is detected then saving new objects of TestPersonaName and TestPersona object.
testPersonaName = TestPersonaName(name=persona_name)
testPersonaName.save()
testpersona(name=testPersonaName,key=persona_key,label=persona_key_label
,value=persona_key_value)
testpersona.save()
return render(request,'dashboard/test_page.html')
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