PyCon mini KUMAMOTO 2017での発表

18. from django.db import models
class Person(models.Model):
first_name = models.CharField(max_length=30)
last_name = models.CharField(max_length=30)

19. CREATE TABLE myapp_person (
"id" serial NOT NULL PRIMARY KEY,
"first_name" varchar(30) NOT NULL,
"last_name" varchar(30) NOT NULL
);

30. class Migration(migrations.Migration):
initial = True
dependencies = [ ]
operations = [
migrations.CreateModel(
name='SampleModel1',
fields=[
('id', models.AutoField(auto_created=True,
primary_key=True, serialize=False, verbose_name='ID')),
('name', models.CharField(max_length=200)),
],
),
]

31. $ ./manage.py sqlmigrate app1 0001
BEGIN;
--
-- Create model SampleModel1
--
CREATE TABLE `app1_samplemodel1` (`id` integer
AUTO_INCREMENT NOT NULL PRIMARY KEY, `name` varchar(200) NOT
NULL);
COMMIT;

35. $ ./manage.py migrate
Operations to perform:
Apply all migrations: admin, app1, auth,
contenttypes, sessions
Running migrations:
Applying app1.0001_initial... OK

36. id app name applied
12 auth
0008_alter_user_usernam
e_max_length
2017-03-31 05:02:26.307972
13 sessions 0001_initial 2017-03-31 05:02:26.361356
14 app1 0001_initial 2017-03-31 05:29:31.189362

45. $ python manage.py reset_db
You have requested a database reset.
This will IRREVERSIBLY DESTROY
ALL data in the database "migrations_demo".
Are you sure you want to do this?
Type 'yes' to continue, or 'no' to cancel: yes
Reset successful.

48. $ python manage.py showmigrations
admin
[X] 0001_initial
[X] 0002_logentry_remove_auto_add
app1
[X] 0001_initial
auth
[X] 0001_initial
[X] 0002_alter_permission_name_max_length
[X] 0003_alter_user_email_max_length
[X] 0004_alter_user_username_opts
[X] 0005_alter_user_last_login_null
[X] 0006_require_contenttypes_0002
[X] 0007_alter_validators_add_error_messages
[X] 0008_alter_user_username_max_length
contenttypes
[X] 0001_initial
[X] 0002_remove_content_type_name
sessions
[X] 0001_initial