Allow users to log in with email or username

bookwyrm/migrations/0037_auto_20210118_1900.py

@@ -0,0 +1,22 @@
+# Generated by Django 3.0.7 on 2021-01-18 19:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookwyrm', '0036_annualgoal'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='shelfbook',
+            options={'ordering': ('-created_date',)},
+        ),
+        migrations.AlterField(
+            model_name='user',
+            name='email',
+            field=models.EmailField(max_length=254, unique=True),
+        ),
+    ]

bookwyrm/models/user.py

@@ -25,6 +25,7 @@ from . import fields, Review
 class User(OrderedCollectionPageMixin, AbstractUser):
     ''' a user who wants to read books '''
     username = fields.UsernameField()
+    email = models.EmailField(unique=True)
 
     key_pair = fields.OneToOneField(
         'KeyPair',

bookwyrm/views/authentication.py

@@ -32,6 +32,13 @@ class Login(View):
         login_form = forms.LoginForm(request.POST)
 
         localname = login_form.data['localname']
+        if '@' in localname: # looks like an email address to me
+            email = localname
+            try:
+                username = models.User.objects.get(email=email)
+            except models.User.DoesNotExist: # maybe it's a full username?
+                username = localname
+        else:
             username = '%s@%s' % (localname, DOMAIN)
         password = login_form.data['password']
         user = authenticate(request, username=username, password=password)