Add fields to track member creation and edit datetimes (#48)

* Add created and updated fields.

bikeshop_project/registration/admin.py

@@ -33,6 +33,6 @@ class CustomUserAdmin(UserAdmin):
 
 @admin.register(Member)
 class MemberAdmin(admin.ModelAdmin):
-    list_display = ('get_full_name',)
+    list_display = ('get_full_name', 'created_at',)
     ordering = ('last_name', )
-    search_fields = ('email', 'first_name', 'last_name')
+    search_fields = ('email', 'first_name', 'last_name', 'created_at')

bikeshop_project/registration/migrations/0004_auto_20170518_0332.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.4 on 2017-05-18 03:32
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('registration', '0003_auto_20170215_0308'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='member',
+            name='created_at',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='member',
+            name='modified_at',
+            field=models.DateTimeField(auto_now=True),
+        ),
+    ]

bikeshop_project/registration/models.py

@@ -96,6 +96,8 @@ class Member(models.Model):
     notes = models.TextField(null=True, blank=True)
     suspended = models.BooleanField(default=False)
     banned = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)
+    modified_at = models.DateTimeField(auto_now=True)
 
     def get_full_name(self):
         # The user is identified by their email address