Step4: make migrations and migrate

yangxg · yangxg · commit e548654e39c3 · 2017-03-18T19:04:02.000+08:00
diff --git a/blog/migrations/0001_initial.py b/blog/migrations/0001_initial.py
@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.6 on 2017-03-15 14:47
+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):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Category',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=100)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Post',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=70)),
+                ('body', models.TextField()),
+                ('created_time', models.DateTimeField()),
+                ('modified_time', models.DateTimeField()),
+                ('excerpt', models.CharField(blank=True, max_length=200)),
+                ('author', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+                ('category', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='blog.Category')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Tag',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=100)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='post',
+            name='tags',
+            field=models.ManyToManyField(blank=True, to='blog.Tag'),
+        ),
+    ]
diff --git a/blog/models.py b/blog/models.py
@@ -1,7 +1,9 @@
 from django.db import models
 from django.contrib.auth.models import User
+from django.utils.six import python_2_unicode_compatible
 
 
+@python_2_unicode_compatible
 class Category(models.Model):
     """
     django 要求我们必须继承 models.Model 类，
@@ -20,7 +22,12 @@ class Category(models.Model):
     """
     name = models.CharField(max_length=100)
 
+    def __str__(self):
+        # python_2_unicode_compatible 装饰器用于兼容 Python2
+        return self.name
 
+
+@python_2_unicode_compatible
 class Tag(models.Model):
     """
     标签 Tag 也比较简单，
@@ -29,7 +36,12 @@ class Tag(models.Model):
     """
     name = models.CharField(max_length=100)
 
+    def __str__(self):
+        # python_2_unicode_compatible 装饰器用于兼容 Python2
+        return self.name
+
 
+@python_2_unicode_compatible
 class Post(models.Model):
     """
     文章的数据库表稍微复杂一点，主要是涉及的字段更多。
@@ -88,3 +100,7 @@ class Post(models.Model):
     # 因此这是一对多的关系，
     # 和 Category 类似。
     author = models.ForeignKey(User)
+
+    def __str__(self):
+        # python_2_unicode_compatible 装饰器用于兼容 Python2
+        return self.title
