创建工程
django-admin startproject holiday
打开服务
》》》python manage.py runserver
Performing system checks…
System check identified no issues (0 silenced)
You have unapplied migrations; your app may not work properly until they are applied.
Run ‘python manage.py migrate’ to apply them.
July 15, 2017 - 10:07:03
Django version 1.8.17, using settings ‘holiday.settings’
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
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工程 tree
在holiday的holiday目录下编写;
view.py 文件代码:
from django.http import HttpResponse
def home(request):
return HttpResponse("i like you ,this is a begin")
urls.py 文件代码:
from django.conf.urls import include, url
from django.contrib import admin
from .import view
urlpatterns = [
url(r'^admin/', include(admin.site.urls)),
url(r'^$', view.home)
]
在第一个holiday目录下创建一个templates文件夹,在templates下创建一个HTML
修改setting.py文件,添加
‘DIRS’: [BASE_DIR+”/templates”,],
即:
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [BASE_DIR+"/templates",], #change
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
修改view.py
from django.http import HttpResponse
from django.shortcuts import render
def home(request):
return render(request,'home.html',)
刷新即可见;
数据库 操作
修改setting.py
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql', # 或者 mysql.connector.django
'NAME': 'test',
'USER': 'test',
'PASSWORD': 'tes',
'HOST':'localhost',
'PORT':'3306',
}
}
创建APP(爱胖胖)
尽量不要使用中文!
修改app_first下的models.py文件代码;
from django.db import models
# Create your models here.
class Test(models.Model):
name = models.CharField(max_length=20)
修改setting.py文件代码;
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'TestModel', #add
)
创建表结构
命令行;
$ python manage.py migrate # 创建表结构
$ python manage.py makemigrations TestModel # 让 Django 知道我们在我们的模型有一些变更
$ python manage.py migrate TestModel # 创建表结构
F:\Python(test_document)\Django_web\holiday>python manage.py makemigrations app_first
Migrations for 'app_first':
0001_initial.py:
- Create model Test
F:\Python(test_document)\Django_web\holiday>python manage.py migrate app_first
Operations to perform:
Apply all migrations: app_first
Running migrations:
Rendering model states... DONE
Applying app_first.0001_initial... OK
F:\Python(test_document)\Django_web\holiday>
我们可以看到数据库中创建了一个新表:
app_first_test
表名组成结构为:应用名_类名(如:app_first_test)。
表的主键会自动设为id这个字段!