Flask Development Micro Movie website (i)

1. Use of flask knowledge

• 1. Use shaping, floating-point, Path-type, string-based regular expression routing converter
• 2. Using GET and POST requests, uploading files, cookie acquisition and response, 404 processing
• 3. Use template auto-escape, define filter, define global context processor, JINJA2 syntax, include, inherit, define macro
• 4. Use FLASK-WTF to define the form model, field type, field validation, view processing form, template use form
• 5. Use Flask-sqlachemy to define the database model, make additions and deletions to the data, data migration
• 6. Use blueprint to optimize project structure, realize micro movie website foreground and background business logic
• 7.flask deployment, installation of Nginx, install MySQL service and limit download rate to video streaming via Nginx reverse proxy, limit the number of playback connections a single IP can initiate

2. Video technology used

• 1.jwplayer Player plug-in
• 2. Video speed limit limit IP access
• 3.FLV,MP4 Video Format support
• 4.Nginx on-demand implementation

3. Description of the environment:

开发系统：Win 7python版本：3.6.3开发工具：pycharm 专业版数据库：MariaDB 5.5.56-Server数据库所在系统：CentOS 7.4

4. Project Model Design

• Plan your project structure using Flask's blueprint Blueprint
• Use Flask SQLAlchemy to define the database model associated with the business requirements
• Generate data tables with MySQL database

4.1 Front-end construction

实现前后台html布局页面搭建实现Jinja2引擎语法引入静态资源文件，404错误页面的处理

4.2 Back-end development

Flask sqlalchemy结合MySQL数据表进行增删改查操作Flask数据分页查询，路由装饰器定义，模板中变量调用，登录会话机制，上传文件Flask wtforms表单验证，Flask自定义应用上下文，自定义权限装饰器对管理系统进行基于角色权限的访问控制Flask的多表关联查询，关键字模糊查询等

4.3 Site Deployment

实现在CentOS服务器上搭建Nginx+MySQL+python环境使用Nginx反向代理多端口多进程部署微电影网站配置Nginx流媒体访问限制参数

5. Front and rear project directory Analysis: 5.1 Reception (Home):

数据模型：models.py表单处理：home/forms.py模版目录：templates/home静态目录：static

5.2 Backstage (Admin):

数据模型：models.py表单处理：admin/forms.py模版目录：templates/admin静态目录：static

The entire project directory looks like this:

6. Building a project directory using Blueprints 6.1 What is a directory

一个应用中或跨应用制作组件和通用的模式,类似于Django中的app

6.2 The role of blueprints

将不同的功能模块化构建大型应用优化项目结构增强可读性，易于维护

6.3 Blueprint Build Project directory 6.3.1 Defining blueprints

In the home directory, under __init__.py文件

from flask import Blueprinthome=Blueprint(‘home‘,__name__)import app.home.views

In the admin directory, under __init__.py文件

from flask import Blueprintadmin=Blueprint(‘admin‘,__name__)import app.admin.views          

6.3.2 Registration Blueprint

Modify the __init__.py file in the app directory

from app.admin import admin as admin_blueprintfrom app.home import home as home_blueprintapp.register_blueprint(home_blueprint)app.register_blueprint(admin_blueprint, url_prefix=‘/admin‘)

6.3.3 Call Blueprint

home目录下的views.py文件

from . import home@home.route("/register/", methods=["GET", "POST"])def register():    pass@home.route("/login/", methods=[‘GET‘, ‘POST‘])def login():    pass

admin目录下的views.py文件

from . import admin@admin.route(‘/‘)def index():    pass@admin.route(‘/login/‘, methods=[‘GET‘, ‘POST‘])def login():    pass

Flask Development Micro Movie website (i)