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我有幾個模型，其中一個是擴展django admin的用戶模型的外鍵。我想在登錄時顯示他們的會話中屬於用戶的內容。我已經定義了這個認證，它將檢查數據庫中是否存在特定的用戶，並將他們重定向到他們的實例的會話。django登錄用戶到他們的門戶
def auth_view(request):
username = request.POST.get('username', '')
password = request.POST.get('password', '')
user = auth.authenticate(username=username, password=password)
if user is not None:
auth.login(request, user)
return HttpResponseRedirect('/studentloggedin/')
基本上，Registration是Student模型的第一個模型和外鍵，而Student也是UserLog的外鍵。 UserLog擴展了默認的django admin。我在這裏定義了登錄會話，以便在登錄時過濾掉各個用戶的詳細信息。
def studentloggedin(request):
registration = Registration.objects.all()
students = Student.objects.filter(registration=registration)
alluser = UserLog.objects.filter(student=students)
context = {
'registration': registration,
'students': students,
'alluser': alluser,
}
return render(request, "studentloggedin.html", context)
這裏是模板在登錄時呈現信息。
<img
{% for student in students %}
src="{{ student.student_photo.url }}">
<p>{{ student.previous_school }}</p>
{% endfor %}
但我發現了以下錯誤：在/ studentloggedin
ProgrammingError/
以上乘用作表達式的子查詢返回一行
只是想添加模型供您細讀。
class Registration(models.Model):
lastName = models.CharField(
_('Last Name'),
max_length=30,
null=False,
blank=False
)
middleName = models.CharField(
_('Middle Name'),
max_length=30,
null=True,
blank=True
)
firstName = models.CharField(
_('First Name'),
max_length=30,
null=False,
blank=False
)
gender = models.CharField(
_('Gender'),
max_length=30,
choices=GENDER_CHOICES,
default=u' ',
null=False,
blank=False
)
grade = models.CharField(
_('Class'),
max_length=30,
choices=CLASS_CHOICES,
default=u' ',
null=False,
blank=False
)
phone_regex = RegexValidator(
regex=r'^\+?1?\d{9,15}$',
message="Phone number format: '+999999999'. Up to 15 digits allowed."
)
phone_number = models.CharField(
_('Phone Number'),
max_length=255,
validators=[phone_regex],
blank=True
)
email = models.EmailField(
_('Email Address'),
max_length=254,
null=True,
blank=True
)
address = models.CharField(
_('Address'),
max_length=255,
null=False,
blank=False
)
city = models.CharField(
_('City'),
max_length=30,
null=False,
blank=False
)
county = models.CharField(
_('County'),
max_length=30,
choices=COUNTY_CHOICES,
default=None,
null=False,
blank=False
)
nationality = models.CharField(
_('Nationality'),
max_length=30,
null=False,
blank=False
)
dateOfBirth = models.DateField(
_('Date of Birth'),
max_length=30,
null=False,
blank=False
)
placeOfBirth = models.CharField(
_('Place of Birth'),
max_length=255,
null=False,
blank=False
)
regDate = models.DateField(
_('Registration Date'),
max_length=30,
null=False,
blank=False
)
country = models.CharField(
_('Country'),
max_length=255,
null=False,
blank=False
)
emergency = models.CharField(
_('Emergency Contact'),
max_length=255,
null=True,
blank=True
)
emergency_phone = models.CharField(
_('Phone (Emergency Contact)'),
max_length=255,
validators=[phone_regex],
blank=True
)
transcript = models.FileField(
_('Transcript'),
max_length=255,
null=True,
blank=True
)
created = models.DateTimeField(
_('Date Created'),
auto_now=True,
null=True,
blank=True
)
modified = models.DateTimeField(
_('Date Modified'),
auto_now_add=True,
null=False,
blank=False
)
def __str__(self):
return self.firstName
def age(self):
import datetime
return int((datetime.date.today() - self.dateOfBirth).days/365.25)
def upload_location(instance, filename):
return "%s/%s" % (instance.id, filename)
class Student(models.Model):
import datetime
YEAR_CHOICES = []
for r in range(1980, (datetime.datetime.now().year+1)):
YEAR_CHOICES.append((r, r))
studentID = models.CharField(
_('Student ID'),
max_length=30,
blank=True,
default=''
)
registration = models.ForeignKey(
Registration
)
student_photo = models.ImageField(
_('Picture'),
max_length=255,
null=False,
blank=False,
upload_to=upload_location
)
previous_school = models.CharField(
_('Previous School Attended'),
max_length=255,
null=False,
blank=False
)
previous_school_address = models.CharField(
_('Previous School Address'),
max_length=255,
null=False,
blank=False
)
last_year_attendance = models.IntegerField(
_('Last Year of Attendance'),
choices=YEAR_CHOICES,
default=datetime.datetime.now().year
)
level = models.CharField(
_('Level'),
max_length=255,
choices=LEVEL_CHOICES,
default=None,
null=False,
blank=False
)
enrollment_status = models.CharField(
_('Enrollment Status'),
max_length=255,
choices=ENROLLMENT_CHOICES,
default=None,
null=False,
blank=False
)
enrollment_Date = models.DateField(
_('Enrollment Date'),
max_length=30,
null=False,
blank=False
)
created = models.DateTimeField(
_('Date Created'),
auto_now=True,
null=True,
blank=True
)
modified = models.DateTimeField(
_('Date Modified'),
auto_now_add=True,
null=False,
blank=False
)
class Meta:
ordering = ["-id"]
def __str__(self):
return self.studentID
def save(self, force_insert=False, force_update=False):
if self.studentID == "":
existing_studentIDs = Student.objects.all().order_by('-studentID')
if existing_studentIDs.count() > 0:
new_code = int(existing_studentIDs[0].studentID[1:]) + 1
else:
new_code = 0
self.studentID = 'S%03d' % new_code
super(Student, self).save(force_insert, force_update)
class UserLog(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
student = models.ForeignKey(
Student,
null=True,
blank=True,
default=None
)
staff = models.ForeignKey(
Staff,
null=True,
blank=True,
default=None
)
parent = models.ForeignKey(
Parent,
null=True,
blank=True,
default=None
)
你運行過'python manage.py makemigrations'和'python manage.py migrate'嗎？ – ettanany
是的@ettanany，我運行這些命令，似乎一切工作從管理員登錄。我試圖登錄用戶並查詢屬於他們的詳細信息。 –
你可以展示你的模型？ – ettanany