ORM相关
Activating models,激活model
model生成数据库表格
python manage.py makemigrations + app名称(不加默认project更新)
Creating models,生成model对应的数据库表
python manage.py migrate
查看model文件的sql语句
python manage.py sqlmigrate ycapi_v2(app名称) 0001(文件名称)
内容提点:
- 生成的表名 = app名称 + model名称(小写)
- 如果不指定主键, 将会自动写入Primary keys(IDs)
- django约定,外键格式为,后接有"_id" 的字段
- 待翻译: The foreign key relationship is made explicit by a FOREIGN KEY constraint. Don’t worry about the DEFERRABLE parts; that’s just telling PostgreSQL to not enforce the foreign key until the end of the transaction.
检查没有数据库迁移的所有问题
'python manage.py check'
admin配置
创建用户
'python manage.py createsuperuser'
model向admin注册
进入 app名称文件夹/admin.py
from django.contrib import admin
from model文件 import model名称
admin.site.register(model名称)
单元测试相关
进入app名/tests.py
攥写测试用例:
import datetime
from django.utils import timezone
from django.test import TestCase
from .models import Question
class QuestionModelTests(TestCase):
def test_was_published_recently_with_future_question(self):
"""
was_published_recently() returns False for questions whose pub_date
is in the future.
"""
time = timezone.now() + datetime.timedelta(days=30)
future_question = Question(pub_date=time)
self.assertIs(future_question.was_published_recently(), False)
运行测试用例
python manage.py test + app名
