Help me - Django and python

[avdesh sharma]

Hi All,

I have an issue coming in my django code, even though the user id and password is present in sqlite3 db still  the user is giving 'None' value 

user = authenticate(username=username, password=password)

and I am not able to login with user and throwing this error.

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Warm Regards,

Avdesh Kumar Sharma

9650031844

[DJANGO DEVELOPER]

can you please share your login view code?

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[DJANGO DEVELOPER]

I think you're not returning anything in your model.

[avdesh sharma]

Here is my View.py code

from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.contrib.auth import authenticate, logout, login
from django.contrib.auth.decorators import login_required
from student.models import *
from django.views.generic import TemplateView
import datetime, random
from django.contrib.auth.backends import BaseBackend
# Create your views here.


def index_view(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        tab_selected = request.POST.get('tab_selected')

        user = authenticate(username=username, password=password)
        print(user)
        if user:
        # if get_user(username):
            if user.is_active:
                login(request, user)
                request.session['username'] = username
                request.session['tab_selected'] = tab_selected
                if tab_selected == 'student_tab':
                    return HttpResponseRedirect(reverse('student:stud_home'))
                elif tab_selected == 'dept_tab':
                    if username[:3] == 'hod':
                        return HttpResponseRedirect(reverse('student:hod_home'))
                    else:
                        return HttpResponseRedirect(reverse('student:dep_home'))
                elif tab_selected == 'office_tab':
                    return HttpResponseRedirect(reverse('student:off_home'))
            else:
                user_login = 'inactive'
                return render(request, 'student/index.html', context={'login': user_login})
        else:
            user_login = 'invalid'
            return render(request, 'student/index.html', context={'login': user_login})
    else:
        return render(request, 'student/index.html', context={})

index.html

<div class="form-group">
    <label for="password" style="color:black;"><b>PASSWORD</b></label></br>
    <input type="password" style="width: 15rem; margin: auto;" class="form-control" name="password" placeholder="Enter Password">
</div>
<input type="hidden" value="student_tab" name="tab_selected">
{% if login == 'inactive' %}
    <label for="error" style="color: red;">User Inactive! Contact Admin!</label>
{% elif login == 'invalid' %}
    <label for="error" style="color: red;">line 32 username or password Invalid</label>
{% endif%}
{% if tab_error == True %}
    <label for="error" style="color: red;">Invalid Tab Selected</label>
{% endif %}
<br>

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[DJANGO DEVELOPER]

by seeing your code, it seems that only the 'else' part is working. have you provided value='{{dict_key.model_password_field}} in your html input element?

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[DJANGO DEVELOPER]

your index.html

<div class="form-group">
    <label for="password" style="color:black;"><b>PASSWORD</b></label></br>
    <input type="password" style="width: 15rem; margin: auto;" class="form-control" name="password" placeholder="Enter Password">
</div>
<input type="hidden" value="student_tab" name="tab_selected">
{% if login == 'inactive' %}
    <label for="error" style="color: red;">User Inactive! Contact Admin!</label>
{% elif login == 'invalid' %}
    <label for="error" style="color: red;">line 32 username or password Invalid</label>
{% endif%}
{% if tab_error == True %}
    <label for="error" style="color: red;">Invalid Tab Selected</label>
{% endif %}

changed index.html

<div class="form-group">
    <label for="password" style="color:black;"><b>PASSWORD</b></label></br>

    <input type="password" style="width: 15rem; margin: auto;" class="form-control" name="password" placeholder="Enter Password" value="{{login.password_field}}">

</div>
<input type="hidden" value="student_tab" name="tab_selected">
{% if login == 'inactive' %}
    <label for="error" style="color: red;">User Inactive! Contact Admin!</label>

{% else %}

    <label for="error" style="color: red;">line 32 username or password Invalid</label>
{% endif%}
{% if tab_error == True %}
    <label for="error" style="color: red;">Invalid Tab Selected</label>
{% endif %}

[avdesh sharma]

what will happen if I change from elif to else ?

FYI - I checked it but still getting same error. 

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[DJANGO DEVELOPER]

because it is necessary to write when there are no more conditions left.

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[DJANGO DEVELOPER]

have you removed for loop from your form?