Allow user to login vis username or email #94

.codeclimate.yml

@@ -5,6 +5,7 @@ exclude_patterns:
   - "**/migrations/*"
   - "**/tests.py"
   - "dev.py"
+  - "*ideal*"
 
 plugins:
   bandit:

accounts/backends.py

@@ -0,0 +1,28 @@
+from django.contrib.auth.backends import ModelBackend
+from django.contrib.auth import get_user_model
+from django.db.models import Q
+
+
+UserModel = get_user_model()
+
+
+class EmailBackend(ModelBackend):
+    def authenticate(self, request, username=None, password=None, **kwargs):
+        try:
+            user = UserModel.objects.get(
+                Q(username__iexact=username) | Q(email__iexact=username),
+            )
+        except UserModel.DoesNotExist:
+            UserModel().set_password(password)
+            return
+        except UserModel.MultipleObjectsReturned:
+            user = (
+                UserModel.objects.filter(
+                    Q(username__iexact=username) | Q(email__iexact=username),
+                )
+                .order_by("id")
+                .first()
+            )
+
+        if user.check_password(password) and self.user_can_authenticate(user):
+            return user

accounts/forms.py

@@ -1,5 +1,9 @@
-from django.contrib.auth.forms import UserCreationForm, UserChangeForm
-
+from django.contrib.auth.forms import (
+    UserCreationForm,
+    UserChangeForm,
+    AuthenticationForm,
+)
+from django import forms
 from .models import User
 
 
@@ -13,3 +17,7 @@ class CustomUserChangeForm(UserChangeForm):
     class Meta:
         model = User
         fields = ("username", "email")
+
+
+class LoginForm(AuthenticationForm):
+    username = forms.CharField(label="Email / Username")

accounts/migrations/0003_alter_user_email.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0 on 2024-01-15 22:46
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounts', '0002_alter_user_table'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='user',
+            name='email',
+            field=models.EmailField(max_length=254, unique=True, verbose_name='email address'),
+        ),
+    ]

accounts/models.py

@@ -1,9 +1,12 @@
+from django.db import models
 from django.db.models import QuerySet
 from django.contrib.auth.models import AbstractUser
 from django.utils.translation import gettext_lazy as _
 
 
 class User(AbstractUser):
+    email = models.EmailField(_("email address"), unique=True)
+
     class Meta:
         db_table = "user"
         verbose_name = _("user")

accounts/urls.py

@@ -1,7 +1,8 @@
 from django.urls import path
 from django.utils.translation import gettext_lazy as _
-from .views import SignUpView
+from .views import LoginView, SignUpView
 
 urlpatterns = [
     path(_("signup/"), SignUpView.as_view(), name="signup"),
+    path("login/", LoginView.as_view(), name="login"),
 ]

accounts/views.py

@@ -1,10 +1,15 @@
 from django.urls import reverse_lazy
 from django.views.generic.edit import CreateView
-
-from .forms import CustomUserCreationForm
+from django.contrib.auth import views as auth_views
+from .forms import LoginForm, CustomUserCreationForm
 
 
 class SignUpView(CreateView):
     form_class = CustomUserCreationForm
     success_url = reverse_lazy("home")
     template_name = "registration/signup.html"
+
+
+class LoginView(auth_views.LoginView):
+    form_class = LoginForm
+    template_name = "registration/login.html"

core/settings.py

@@ -153,7 +153,7 @@
 
 LOGIN_REDIRECT_URL = "home"
 LOGOUT_REDIRECT_URL = "home"
-
+AUTHENTICATION_BACKENDS = ["accounts.backends.EmailBackend"]  # new
 
 # Internationalization
 # https://docs.djangoproject.com/en/4.0/topics/i18n/