我的格式为django.db.utils.IntegrityError：NOT NULL约束失败：
在我的应用程序中，我要求用户创建一个新项目，然后通过表单询问添加团队成员名称mail.if邮件已存在于数据库中，用户通过邮件邀请用户登录该应用程序邮件不在数据库中，用户通过邮件要求登录。然后邀请的成员被添加到团队中。
尝试在数据库中分配现有用户时出现错误
这是我的代码：
def TeamRegister2(request):
#import pdb; pdb.set_trace()
InviteFormSet = formset_factory(InviteForm2)
if request.method == 'POST':
formset = InviteFormSet(request.POST)
if(formset.is_valid()):
for i in formset:
mail = i.cleaned_data['Email']
if MyUser.objects.filter(email = mail).exists():
user = MyUser(email = mail)
u1 = user.id # get user ID
a1 = MyUser.objects.get(email = request.user.email) #get user email
a2 = Project.objects.filter(project_hr_admin = a1) #get all project created by the user
a3 = a2.latest('id') # extract the last project
a4 = a3.team_id # extract the team linked to the project
a4.members.add(u1) # add the member to the team
invited_user = MyUser.objects.get(email = mail)
current_site = get_current_site(request)
message = render_to_string('acc_join_email.html', {
'user': invited_user.first_name,
'domain':current_site.domain,
})
mail_subject = 'You have been invited to SoftScores.com please LogIn to get access to the app'
to_email = mail
email = EmailMessage(mail_subject, message, to=[to_email])
email.send()
else:
user = MyUser(email = mail)
password = MyUser.objects.make_random_password()
user.set_password(password)
user.is_active = False
user.is_employee = True
user.save()
u1 = user.id #get user id
a1 = MyUser.objects.get(email = request.user.email) #get user email
a2 = Project.objects.filter(project_hr_admin = a1) #get all project created by the user
a3 = a2.latest('id') # extract the last project
a4 = a3.team_id # extract the team linked to the project
a4.members.add(u1) # add the member to the team
current_site = get_current_site(request)
message = render_to_string('acc_active_email.html', {
'user':user,
'domain':current_site.domain,
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'token': account_activation_token.make_token(user),
})
mail_subject = 'You have been invited to SoftScores.com please sign in to get access to the app'
to_email = user.email
email = EmailMessage(mail_subject, message, to=[to_email])
email.send()
messages.success(request, 'testouille la fripouille')
return HttpResponseRedirect(reverse('website:ProjectDetails', kwargs={'pk':a3.id}))
else:
print("The entered form is not valid")
else:
formset = InviteFormSet()
return render(request,'team_register.html', {'formset':formset})
MyUser Model：
class MyUser(AbstractBaseUser):
email = models.EmailField(
verbose_name='email address',
max_length=255,
unique=True,
)
first_name = models.CharField(max_length=150, blank=True, null=True)
last_name = models.CharField(max_length=150, blank=True, null=True)
is_active = models.BooleanField(default=True)
is_admin = models.BooleanField(default=False)
is_hr = models.BooleanField(default=False)
is_candidate = models.BooleanField(default=False)
is_employee = models.BooleanField(default=False)
company = models.CharField(max_length=100, blank=True, null=True)
团队模型：
class Team(models.Model):
team_name = models.CharField(max_length=100, default = '')
team_hr_admin = models.ForeignKey(MyUser, blank=True, null=True)
members = models.ManyToManyField(MyUser, related_name="members")
def __str__(self):
return self.team_name
项目模型：
class Project(models.Model):
name = models.CharField(max_length=250)
team_id = models.ForeignKey(Team, blank=True, null=True)
project_hr_admin = models.ForeignKey('registration.MyUser', blank=True, null=True)
candidat_answers = models.ManyToManyField('survey.response')
任何想法如何解决该错误并将用户添加到团队？ 你好;）
回溯：
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
65. return self.cursor.execute(sql, params)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py" in execute
328. return Database.Cursor.execute(self, query, params)
The above exception (NOT NULL constraint failed: website_team_members.myuser_id) was the direct cause of the following exception:
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/raphaelbendenoun/Documents/Django Projects/Authentication_project/registration/views.py" in TeamRegister2
85. a4.members.add(u1) # add the member to the team
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py" in add
934. self._add_items(self.source_field_name, self.target_field_name, *objs)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/fields/related_descriptors.py" in _add_items
1103. for obj_id in new_ids
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/query.py" in bulk_create
443. ids = self._batched_insert(objs_without_pk, fields, batch_size)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/query.py" in _batched_insert
1099. self._insert(item, fields=fields, using=self.db)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/query.py" in _insert
1076. return query.get_compiler(using=using).execute_sql(return_id)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql
1107. cursor.execute(sql, params)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
80. return super(CursorDebugWrapper, self).execute(sql, params)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
65. return self.cursor.execute(sql, params)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/utils.py" in __exit__
94. six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/utils/six.py" in reraise
685. raise value.with_traceback(tb)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/utils.py" in execute
65. return self.cursor.execute(sql, params)
File "/Users/raphaelbendenoun/anaconda/envs/myDjangoEnv/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py" in execute
328. return Database.Cursor.execute(self, query, params)
Exception Type: IntegrityError at /registration/auth_team_register3/
Exception Value: NOT NULL constraint failed: website_team_members.myuser_id
答案 0 :(得分：2)
您正尝试将未保存的MyUser实例添加到manytomany字段中。您必须获取对象而不是创建新对象。
user = MyUser.objects.get(email=mail)
a4.members.add(user)