Local Variable 'user_form' referenced before assignment

huangapple
go评论115阅读模式
英文:

Local Variable 'user_form' referenced before assignment

问题

这是代码部分的翻译：

  1. 我正在使用Django运行一个网站。
  3. 这是代码（views.py）：
  5. def signup(request):
  6.     registered=False
  7.     failed_ref=False
  8.     wrong_ref=False
  9.     if request.method=='POST':
  10.         if 'city' in request.POST:
  11.             user_form = UserForm(data=request.POST)
  12.             profile_form = ProfileForm(data=request.POST)
  13.             if user_form.is_valid() and profile_form.is_valid():
  14.                 user = user_form.save()
  15.                 user.set_password(user.password)
  16.                 user.save()
  17.                 profile = profile_form.save(commit=False)
  18.                 profile.user = user
  19.                 try:
  20.                     ref_con = profile.referral_contact
  21.                     if ref_con == profile.mobile_no:
  22.                         failed_ref=True
  23.                     elif ref_con == Profile.objects.get(mobile_no=ref_con).mobile_no:
  24.                         prof = Profile.objects.get(mobile_no=ref_con)
  25.                         wallet_rec = Wallet.objects.get(profile=prof)
  26.                         wall = Wallet.objects.get(profile=profile)
  27.                         registered = True
  28.                 except Profile.DoesNotExist:
  29.                     wrong_ref = True
  30.                 data={'registered':registered,'failed_ref':failed_ref,'wrong_ref':wrong_ref}
  31.                 return JsonResponse(data,safe=False)
  32.     else:
  33.         user_form=UserForm()
  34.         profile_form=ProfileForm()
  35.     return JsonResponse({'user_form':user_form,'profile_form':profile_form,'registered':registered,
  36.                                                     'failed_ref':failed_ref,'wrong_ref':wrong_ref})

希望这对你有帮助。如果你有任何问题，请随时提出。

英文:

I am running a website using Django .

Here is the code (views.py):

  1. def signup(request):
  2. registered=False
  3. failed_ref=False
  4. wrong_ref=False
  5.     if request.method=='POST':
  6.         if 'city' in request.POST:
  7.             user_form = UserForm(data=request.POST)
  8.             profile_form = ProfileForm(data=request.POST)
  9.             if user_form.is_valid() and profile_form.is_valid():
  10.                user = user_form.save()
  11.                user.set_password(user.password)
  12.                user.save()
  13.                profile = profile_form.save(commit=False)
  14.                profile.user = user
  15.                try:
  16.                    ref_con = profile.referral_contact
  17.                    if ref_con == profile.mobile_no:
  18.                    failed_ref=True
  19.                    elif ref_con == Profile.objects.get(mobile_no=ref_con).mobile_no:
  20.                        prof = Profile.objects.get(mobile_no=ref_con)
  21.                        wallet_rec = Wallet.objects.get(profile=prof)
  22.                        wall = Wallet.objects.get(profile=profile)
  23.                        registered = True
  24.                     
  25.                 except Profile.DoesNotExist:
  26.                     wrong_ref = True
  27.                 data={'registered':registered,'failed_ref':failed_ref,'wrong_ref':wrong_ref}
  28.                 return JsonResponse(data,safe=False)
  29.     else:
  30.         user_form=UserForm()
  31.         profile_form=ProfileForm()
  32.     return JsonResponse({'user_form':user_form,'profile_form':profile_form,'registered':registered,
  33.                                                     'failed_ref':failed_ref,'wrong_ref':wrong_ref})

For this, i need to get response in JSON . When i run , i am getting error "local variable 'user_form' referenced before assignment".What change i need to do ?. I am bit confused.

答案1

得分: 2

以下是您要翻译的部分：

这个条件必须失败

  1. if 'city' in request.POST:

因此

  1. user_form = UserForm(data=request.POST) # 是无法到达的代码

因此 user_form 保持未定义。

导致错误 "local variable 'user_form' referenced before assignment"

可能的解决方案：

  1. def signup(request):
  2. 	registered=False
  3. 	failed_ref=False
  4. 	wrong_ref=False
  5. 	if request.method=='POST':
  6.         # 在条件之前定义变量
  7.         #
  8. 		user_form = UserForm(data=request.POST)
  9. 		profile_form = ProfileForm(data=request.POST)
  10. 		if 'city' in request.POST:
  11. 			if user_form.is_valid() and profile_form.is_valid():
  12. 				user = user_form.save()
  13. 				user.set_password(user.password)
  14. 				user.save()
  15. 				profile = profile_form.save(commit=False)
  16. 				profile.user = user
  17. 				try:
  18. 					ref_con = profile.referral_contact
  19. 					if ref_con == profile.mobile_no:
  20. 						failed_ref=True
  21. 					elif ref_con == Profile.objects.get(mobile_no=ref_con).mobile_no:
  22. 						prof = Profile.objects.get(mobile_no=ref_con)
  23. 						wallet_rec = Wallet.objects.get(profile=prof)
  24. 						wall = Wallet.objects.get(profile=profile)
  25. 						registered = True
  27. 				except Profile.DoesNotExist:
  28. 					wrong_ref = True
  29. 					data={'registered':registered,'failed_ref':failed_ref,'wrong_ref':wrong_ref}
  30. 					return JsonResponse(data,safe=False)
  31. 	else:
  32. 		user_form=UserForm()
  33. 		profile_form=ProfileForm()
  34. 		return JsonResponse({'user_form':user_form,'profile_form':profile_form,'registered':registered,
  35. 			'failed_ref':failed_ref,'wrong_ref':wrong_ref})
英文:

This condition must be failing

  1. if 'city' in request.POST:

hence

  1. user_form = UserForm(data=request.POST) # is an unreachable code

hence user_form remains undefined.

Resulting in error "local variable 'user_form' referenced before assignment"

Possible solution:

  1. def signup(request):
  2. 	registered=False
  3. 	failed_ref=False
  4. 	wrong_ref=False
  5. 	if request.method=='POST':
  6.         # Defined the variables before the condition 
  7.         #
  8. 		user_form = UserForm(data=request.POST)
  9. 		profile_form = ProfileForm(data=request.POST)
  10. 		if 'city' in request.POST:
  11. 			if user_form.is_valid() and profile_form.is_valid():
  12. 				user = user_form.save()
  13. 				user.set_password(user.password)
  14. 				user.save()
  15. 				profile = profile_form.save(commit=False)
  16. 				profile.user = user
  17. 				try:
  18. 					ref_con = profile.referral_contact
  19. 					if ref_con == profile.mobile_no:
  20. 						failed_ref=True
  21. 					elif ref_con == Profile.objects.get(mobile_no=ref_con).mobile_no:
  22. 						prof = Profile.objects.get(mobile_no=ref_con)
  23. 						wallet_rec = Wallet.objects.get(profile=prof)
  24. 						wall = Wallet.objects.get(profile=profile)
  25. 						registered = True
  27. 				except Profile.DoesNotExist:
  28. 					wrong_ref = True
  29. 					data={'registered':registered,'failed_ref':failed_ref,'wrong_ref':wrong_ref}
  30. 					return JsonResponse(data,safe=False)
  31. 	else:
  32. 		user_form=UserForm()
  33. 		profile_form=ProfileForm()
  34. 		return JsonResponse({'user_form':user_form,'profile_form':profile_form,'registered':registered,
  35. 			'failed_ref':failed_ref,'wrong_ref':wrong_ref})

huangapple
  • 本文由 发表于 2020年1月3日 17:17:50
  • 转载请务必保留本文链接：https://go.coder-hub.com/59575858.html
  • django
  • json
  • python
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定