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Homepage static
Introduction
- Scenario: When the data defense is very small, you can make the page static. The homepage static is to save the rendered html page of the homepage
- advantage:
- No need for Django execution
- No need for mysql (database) execution
- Improve performance and improve server execution efficiency
Home frequently used solutions
Timed generation
Where can I find the rendered html page?
We know that the render function returns the HttpResponse object , which contains the rendered template page. This is what we need.
- Then find: HttpSesponse object has a property, you can get a response in response to the body , this is the template rendering we need, the need to save static things.
Save the code of the static page (partial)
- We create a file and write a method in it to generate the preservation of this static page
# 构造上下文
context = {
'categories': categories, # 三级分类
'contents': contents, # 轮播图
}
response = render(None, 'index.html', context)
# 2.拿到html
html_str = response.content.decode()
# 写文件
with open(os.path.join(settings.BASE_DIR, 'static/index1.html'), 'w') as f:
f.write(html_str)
How to set the timing? Call this method regularly to generate new static pages
Installation package, used to make django call linux timer
# 安装
pip install django-crontab
# 注册
INSTALLED_APPS = [
'django_crontab', # 定时任务
]
# 设置定时任务
定时时间基本格式 :
* * * * *
分 时 日 月 周 命令
M: 分钟（0-59）。每分钟用 * 或者 */1 表示
H：小时（0-23）。（0表示0点）
D：天（1-31）。
m: 月（1-12）。
d: 一星期内的天（0~6，0为星期天）。
# 例子
CRONJOBS = [
# 每5分钟生成一次首页静态文件
('*/5 * * * *', 'contents.crons.generate_index_html', '>> ' + os.path.join(os.path.dirname(BASE_DIR), 'logs/crontab.log'))
]
# 解决中文问题
# 在定时任务中，如果出现非英文字符，会出现字符异常错误
CRONTAB_COMMAND_PREFIX = 'LANG_ALL=zh_cn.UTF-8'
# 管理定时任务
# 添加定时任务到系统中
$ python manage.py crontab add
# 显示已激活的定时任务
$ python manage.py crontab show
# 移除定时任务
$ python manage.py crontab remove
- Now you can use these commands to manage the timer.
After that, our static method will be automatically run every 5 minutes.