第五节，Django+Xadmin打造上线标准的在线教育平台—apps目录建立，以及数据表生成

第五节，Django+Xadmin打造上线标准的在线教育平台—apps目录建立，以及数据表生成

apps目录建立

我们创建一个apps目录，将所有的app放到apps目录里去，这样方便管理，也使目录更清楚，不管有多少app都统一到apps目录里去

设置python可以识别apps目录路径

注意：我们在创建app后，python会自动到paa文件夹中找到相应的文件运行，当我们移动app到apps文件夹后，python程序将无法找到相应的文件了，

当我们移动app到apps文件夹后，此时我们需要两步解决

第一步，解决PyCharm无法识别paa文件的方法，在PyCharm将apps设置成python可识别路径，在apps文件夹鼠标右键-标记目录为-Sources Root

第二步，在settings.py设置文件，将apps目录设置成python可识别目录，

https://docs.djangoproject.com/en/1.10/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.10/ref/settings/
"""

import os
import sys

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))      # 当前目录路径
sys.path.insert(0, os.path.join(BASE_DIR, 'apps'))                          # 将apps目录设置成python可识别目录

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.10/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '!#-519=(t8yl=of8^u$(zdcfcovctqlh0n2p#fky&9c3la+j1k'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app_users',                        # 注册 APP
    'app_courses',
    'app_organization',
    'app_operation',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'MxOnline.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates')],           # 配置模板文件路径，也就是html路径
        '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',
            ],
        },
    },
]

WSGI_APPLICATION = 'MxOnline.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases
#
# DATABASES = {
#     'default': {
#         'ENGINE': 'django.db.backends.sqlite3',
#         'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
#     }
# }

#MySQL数据库
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',       # 配置数据库引擎名称
        'NAME': 'mxonline',                         # 数据库名称
        'USER': 'root',                             # 数据库用户名
        'PASSWORD': '279819',                       # 数据库密码
        'HOST': '127.0.0.1',                        # 数据库链接地址
        'PORT': '3306',                             # 数据库端口
    }
}



# Password validation
# https://docs.djangoproject.com/en/1.10/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/1.10/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.10/howto/static-files/

STATIC_URL = '/static/'

数据表生成

生成表需要在PyCharm的终端输入命令，先输入 makemigrations  然后在输入   migrate   来生成表