Add simple support for PGP keys

users/admin.py

@@ -1,12 +1,20 @@
 from django.contrib import admin
 from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
-from .models import User
+from .models import Key, User
+
+
+class KeyInline(admin.TabularInline):
+    model = Key
+    extra = 1
 
 
 class UserAdmin(BaseUserAdmin):
     fieldsets = BaseUserAdmin.fieldsets + (
         ('Profile', {'fields': ('avatar', 'note')}),
     )
+    inlines = (
+        KeyInline,
+    )
 
 
 admin.site.register(User, UserAdmin)

users/migrations/0003_key.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.6 on 2017-10-23 01:25
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0002_auto_20171023_0109'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Key',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('fingerprint', models.CharField(max_length=40)),
+                ('file', models.FileField(upload_to='keys')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='keys', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+    ]

users/models.py

@@ -9,3 +9,16 @@ def avatar_path(instance, name):
 class User(AbstractUser):
     avatar = models.ImageField(upload_to=avatar_path)
     note = models.TextField(blank=True)
+
+
+class Key(models.Model):
+    user = models.ForeignKey(
+        User,
+        related_name='keys',
+        on_delete=models.CASCADE
+    )
+    fingerprint = models.CharField(max_length=40)
+    file = models.FileField(upload_to='keys')
+
+    def pretty_print(self):
+        return " ".join(self.fingerprint[i:i+4] for i in range(0, 40, 4))