как сгенерировать случайное имя пользователя и вставить в базу данных в django - PullRequest
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как сгенерировать случайное имя пользователя и вставить в базу данных в django

0 голосов
/ 21 февраля 2020

Я пытаюсь сгенерировать имя пользователя случайным образом и сохранить в модели пользователя. В настоящее время я могу генерировать имя пользователя, но не могу сохранить его в пользовательской модели и не знаю, как мне это сделать. Пожалуйста, помогите сделать это. мои формы обрабатываются без функции генератора случайных имен пользователей. Когда я добавляю эти функции для генерации произвольного и произвольного имени пользователя, я сталкиваюсь с множеством ошибок, таких как attibute error, unbound error и т. Д.

views.py 

# random username generator
def userdate(dt_time):
    return str(10000*dt_time.year+100*dt_time.month+dt_time.day)

def usernameGen(names):
    names = names.split(" ") 
    for i in range(1,1000):
        first_letter = names[0][0]
        three_letter = names[-1][:3]
        number = '{:03d}'.format(random.randrange(1,1000))
        dateuser = userdate(date.today())
        username =(first_letter+three_letter+dateuser+number)

        try:
            User.objects.get(username = username)
            return usernameGen("PMK GAC")
        except User.DoesNotExist:
            return username

# registration view

def register(request, *args, **kwargs):

    if request.method == 'POST':
        username = usernameGen("PMK GAC") #calling usernameGen function
        form = CustomUserCreationForm(request.POST) #user form
        profile = ProfileForm(request.POST, request.FILES) #profile form
        if form.is_valid() and profile.is_valid():
            form.save()
            profile.save()
            # messages.success(request, 'new user is create. ')

            return render(request,'info.html')

    form = CustomUserCreationForm()
    profile = ProfileForm()

    context = {'form':form, 'profile':profile}
    return render(request, 'register.html', context)

models.py 

#this models is not User model. it is additional model with One to one relationship of current user
class Profile(models.Model):
    # specified choices
    DEPARTMENT_CHOICES = (
    ("Department of Computer Science", "Department of Computer Science" ),
    ("Department of Electronics", "Department of Electronics" ),
    ("Department of Bio-Chemistry", "Department of Bio-Chemistry" ),
    ("Department of Chemistry", "Department of Chemistry" ),
    ("Department of Tamil", "Department of Tamil" ),
    ("Department of English", "Department of English" ),
    ("Department of Mathematics", "Department of Mathematics" ),
    ("Department of Physics", "Department of Physics" ),
    ("Department of Commerce", "Department of Commerce" ),
    ("Department of Business Administration", "Department of Business Administration" ),
    ("Department of Histroy", "Department of Histroy" ),
    ("Department of Economics", "Department of Economics" ),
    )

    GENDER_CHOICES = (
        ('Male', 'Male'),
        ('Female', 'Female')
    )

    user = models.OneToOneField(User, on_delete = models.CASCADE) 
    Date_Of_Birth = models.DateField(null=True)
    Department = models.CharField(null=True, max_length = 50, choices= DEPARTMENT_CHOICES, default=None)
    Phone_number = models.CharField(unique=True, null=True,max_length=10)
    Age = models.CharField(null=True, max_length = 3)
    University_Exam_No = models.CharField(null=True, max_length=10)
    Aadhar = models.CharField(null = True, max_length=12)
    Gender = models.CharField(null=True, max_length = 50, choices= GENDER_CHOICES, default=None)

    Permanent_Address = models.TextField(null=True)
    Per_Taluk = models.CharField(null=True, max_length = 30)
    Per_Pin_Code = models.CharField(null=True, max_length=6)
    Per_State = models.CharField(null=True, max_length=30)
    Per_Dist = models.CharField(null=True, max_length = 30)

    Address = models.TextField(null = True)
    Dist = models.CharField(null=True, max_length = 30)
    Taluk = models.CharField(null=True, max_length = 30)
    Pin_Code = models.CharField(null=True, max_length=6)
    State = models.CharField(null=True, max_length=30)

    Image = models.ImageField(upload_to='profiles', null = True)
    Sign = models.ImageField(upload_to='Signs', null=True)

    def __str__(self):
        return self.user.first_name

forms.py 

# Here I directly created the form without creating a custom User model
# user registration form
class CustomUserCreationForm(forms.Form):

    firstname = forms.CharField(label='First Name', max_length=50, widget=forms.TextInput(attrs={'class':'form-control'}))
    lastname = forms.CharField(label='Last Name', max_length=50,widget=forms.TextInput(attrs={'class':'form-control'}))
    username = forms.CharField(label = 'Username', min_length=4, max_length=150,widget=forms.TextInput(attrs={'class':'form-control'}))
    email = forms.EmailField(label='Email id', widget=forms.EmailInput(attrs={'class':'form-control'}))
    password1 = forms.CharField(label = 'Password', widget=forms.PasswordInput(attrs={'class':'form-control'}))
    password2 = forms.CharField(label = 'Conform Password', widget=forms.PasswordInput(attrs={'class':'form-control'}))

    def clean_firstname(self):
        firstname = self.cleaned_data['firstname']
        return firstname

    def clean_lastname(self):
        lastname = self.cleaned_data['lastname']
        return lastname

    def clean_username(self):
        username = self.cleaned_data['username']
        r = User.objects.filter(username = username)
        if r.count():
            raise ValidationError('username is already exists')
        return username

    def clean_email(self):
        email = self.cleaned_data['email']
        r = User.objects.filter(email = email)
        if r.count():
            raise ValidationError('Email id is already exists')
        return email

    def clean_password2(self):
        password1 = self.cleaned_data.get('password1')
        password2 = self.cleaned_data.get('password2')

        if password1 and password2 and password1 != password2:
            raise ValidationError(' Passwords did not matching')
        return password2

    def save(self, commit = True):
        user = User.objects.create_user(
    self.cleaned_data['username'],
    first_name=self.cleaned_data['firstname'],
    last_name=self.cleaned_data['lastname'],
    email=self.cleaned_data['email'],
    password=self.cleaned_data['password1']
)

        return user

# profile model form.it is model forms of Profile model
class ProfileForm(forms.ModelForm):
    class Meta:
        model = Profile
        fields = '__all__'
        exclude = ['user']
        widgets = {
            'Date_Of_Birth':forms.DateInput(attrs={'class':'form-control', 'placeholder':'YYYY-MM-DD'}),
            'Department':forms.Select(attrs = {'class':'form-control'}),
            'Phone_number':forms.NumberInput(attrs = {'class':'form-control'}),
            'Age':forms.TextInput(attrs={'class':'form-control'}),
            'University_Exam_No':forms.TextInput(attrs={'class':'form-control'}),
            'Aadhar':forms.TextInput(attrs={'class':'form-control'}),
            'Gender':forms.Select(attrs = {'class':'form-control'}),

            'Permanent_Address':forms.Textarea(attrs = {'class':'form-control rounded', 'rows':3, 'cols':3}),
            'Per_Taluk':forms.TextInput(attrs={'class':'form-control'}),
            'Per_Pin_Code':forms.NumberInput(attrs = {'class':'form-control'}),
            'Per_State':forms.TextInput(attrs={'class':'form-control'}),
            'Per_Dist':forms.TextInput(attrs={'class':'form-control'}),

            'Address':forms.Textarea(attrs = {'class':'form-control rounded','rows':3, 'cols':3}),
            'Taluk':forms.TextInput(attrs={'class':'form-control'}),
            'Pin_Code':forms.NumberInput(attrs = {'class':'form-control'}),
            'State':forms.TextInput(attrs={'class':'form-control'}),
            'Dist':forms.TextInput(attrs={'class':'form-control'}),

            'Image':forms.FileInput(attrs={'class':'form-control'}),
            'Sign':forms.FileInput(attrs={'class':'form-control'}),
        }

1 Ответ

0 голосов
/ 21 февраля 2020

если у вас есть форма для создания новых пользователей, чтобы они также заполнили поле имени пользователя. но в любом случае, для любого нового объекта любой модели вы можете переопределить функцию сохранения или, по крайней мере, перед сохранением ее в базе данных добавить некоторый атрибут к объекту.

, например, в вашем modelAdmin модели в admin.py добавьте это (в соответствии с https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django .contrib.admin.ModelAdmin.save_model ): 

@admin.register(MyCustonUser)
classs MyCustomUserAdmin(admin.ModelAdmin):
    def save_model(self, request, obj, form, change):
        obj.username = Your_Username_Gen_Functio()
        super().save_model(request, obj, form, change)

это можно сделать так же и в views.py в представлениях .py: 

def register(request):
     ......
     username = random_str(15)
     new_user = User.objects.create(
         username=username,
         #other_fields = form.other_fields
      )
      new_user.save()

дать целое число N, чтобы получить строку случайного числа длиной N: 

import random
random_string = lambda N: ''.join(random.SystemRandom().choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in range(N)
...