yeazin/login.html

## login.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    {% if request.user.is_authenticated %}
    You are logged In
    <a href="{% url 'logout' %}">Logout</a>
    {% else %}
    <h1>Login here</h1>
    <form action="{% url 'login' %}" method="POST">
        {% csrf_token %}
        <input type="text" name="detect" id="" placeholder="Type Username , MemberId">
        <input type="password" name="password" id="" placeholder="type password">
        <input type="submit" name="" id="">
    </form>
    {% endif %}

</body>
</html>

## models.py
# Django Multiple username Field
'''
We can use default user model for this example. If you want to create the Custom user model You can do the same.
'''

# importing modules
from django.db import models
from django.contrib.auth.models import User

# Creating Profile Model
class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE,null=True )
    name = models.CharField(max_length=300, blank=True, null=True)
    memberID = models.CharField(max_length=300, blank=True, null=True,unique=True)
    phoneNum = models.CharField(max_length = 20, blank = True, null= True, unique=True)

    def __str__(self):
        return self.name

## urls.py
'''
Creating urls
'''

# importing initials modules
from django.urls import path
from .views import LoginFront,LogoutView

urlpatterns = [
    path('login/user/',LoginFront.as_view(),name='login'),
    path('logout/',LogoutView.as_view(),name='logout')
]

## views.py
# Importing initials modules
from django.views import View
from django.contrib.auth import authenticate, login,logout
from django.db.models import Q
from django.shortcuts import redirect, render
from django.utils.decorators import method_decorator
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import User
from .models import profile

# Logics
class LoginFront(View):
    def get(self,request,*args,**kwargs):
        return render(request,'login.html')

    def post(self,request,*args,**kwargs):
      # Getting Input from Frontend
        detect = request.POST.get('detect')
        password = request.POST.get('password')
      # Matching the Queries from Database
        match = User.objects.filter(
            Q(username=detect)| ## matching userame or
            Q(email=detect) | ## matching the email or
            Q(profile__memberID=detect)| ## matching the memberId under profile models
            Q(profile__phoneNum=detect) ## matching the phone number under profile models
		## You can add more with the same pattern
        ).first()

        if match:
            print(match.username) # print the username in terminal if necessary
            user = authenticate(username=match.username,password=password)
            if user is not None:
                login(request,user)
                return redirect('login')
            else:
                return HttpResponse('sorry didnot match')


# Logout View
class LogoutView(View):
    @method_decorator(login_required(login_url='login'))
    def dispatch(self,request,*args,**kwargs):
        return super().dispatch(request,*args,**kwargs)

    def get(self,request,*args,**kwargs):
        logout(request)
        return redirect('login')
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	</head>
	<body>

	{% if request.user.is_authenticated %}
	You are logged In
	<a href="{% url 'logout' %}">Logout</a>
	{% else %}
	<h1>Login here</h1>
	<form action="{% url 'login' %}" method="POST">
	{% csrf_token %}
	<input type="text" name="detect" id="" placeholder="Type Username , MemberId">
	<input type="password" name="password" id="" placeholder="type password">
	<input type="submit" name="" id="">
	</form>
	{% endif %}

	</body>
	</html>
	# Django Multiple username Field
	'''
	We can use default user model for this example. If you want to create the Custom user model You can do the same.
	'''

	# importing modules
	from django.db import models
	from django.contrib.auth.models import User

	# Creating Profile Model
	class Profile(models.Model):
	user = models.OneToOneField(User, on_delete=models.CASCADE,null=True )
	name = models.CharField(max_length=300, blank=True, null=True)
	memberID = models.CharField(max_length=300, blank=True, null=True,unique=True)
	phoneNum = models.CharField(max_length = 20, blank = True, null= True, unique=True)

	def __str__(self):
	return self.name
	'''
	Creating urls
	'''

	# importing initials modules
	from django.urls import path
	from .views import LoginFront,LogoutView

	urlpatterns = [
	path('login/user/',LoginFront.as_view(),name='login'),
	path('logout/',LogoutView.as_view(),name='logout')
	]
	# Importing initials modules
	from django.views import View
	from django.contrib.auth import authenticate, login,logout
	from django.db.models import Q
	from django.shortcuts import redirect, render
	from django.utils.decorators import method_decorator
	from django.contrib.auth.decorators import login_required
	from django.contrib.auth.models import User
	from .models import profile

	# Logics
	class LoginFront(View):
	def get(self,request,args,*kwargs):
	return render(request,'login.html')

	def post(self,request,args,*kwargs):
	# Getting Input from Frontend
	detect = request.POST.get('detect')
	password = request.POST.get('password')
	# Matching the Queries from Database
	match = User.objects.filter(
	Q(username=detect)\| ## matching userame or
	Q(email=detect) \| ## matching the email or
	Q(profile__memberID=detect)\| ## matching the memberId under profile models
	Q(profile__phoneNum=detect) ## matching the phone number under profile models
	## You can add more with the same pattern
	).first()

	if match:
	print(match.username) # print the username in terminal if necessary
	user = authenticate(username=match.username,password=password)
	if user is not None:
	login(request,user)
	return redirect('login')
	else:
	return HttpResponse('sorry didnot match')


	# Logout View
	class LogoutView(View):
	@method_decorator(login_required(login_url='login'))
	def dispatch(self,request,args,*kwargs):
	return super().dispatch(request,args,*kwargs)

	def get(self,request,args,*kwargs):
	logout(request)
	return redirect('login')