flask 项目结构

目录

• flask 项目框架：
  • manage :
  • App/init:
  • App/ext:
  • App/models:
  • App/setting:
  • App/views:
  • 拓展：

flask 项目框架：

init 内注册 + 初始化

manage :

启动文件：
from flask import Flask
from flask_script import Manager

from App import create_app
from flask_migrate import  MigrateCommand


app = create_app()

manager = Manager(app=app)
manager.add_command('db',MigrateCommand)


@app.route('/')
def hello_world():
    return 'Hello World!'


if __name__ == '__main__':
    manager.run()

App/init:

from flask import Flask

# 初始化 app
from App.ext import init_ext
from App.settings import envs
from App.views import init_first_blue


def create_app():
    app = Flask(__name__)
    # 初始化指定的配置文件
    app.config.from_object(envs.get('develop'))

    # 初始化蓝图
    init_first_blue(app)

    # 注册扩展库
    init_ext(app)
    return app

App/ext:

# 拓展模块
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import  Migrate
db = SQLAlchemy()

'''
数据更新 （迁移操作）
pip install flask-migrate'''
migrate = Migrate()



def init_ext(app):
    # 扩展模块

    db.init_app(app)

    migrate.init_app(app,db=db)

    pass

App/models:

from App.ext import db


class Person(db.Model):
    id = db.Column(db.Integer,primary_key=True,autoincrement=True)
    p_name = db.Column(db.String(16))
    p_age = db.Column(db.Integer,default=18)
    
    
   ---> python manage.py db init

--> python manage.py migrate

--> python manage.py upgrate

-->python manage.py runserver -r -d

(在试图曾调用--》 表)

App/setting:

选择环境
def get_db_uri(dbinfo):
    ENGINE = dbinfo.get('ENGINE') or 'mysql'
    DRIVER = dbinfo.get('DRIVER') or 'pymysql'
    USER = dbinfo.get('USER') or 'root'
    PASSWORD = dbinfo.get('PASSWORD') or '123.com'
    HOST = dbinfo.get('HOST') or 'localhost'
    PORT = dbinfo.get('PORT') or '3306'
    DB = dbinfo.get('DB') or 'develop'

    return "{}+{}://{}:{}@{}:{}/{}".format(ENGINE,DRIVER,USER,PASSWORD,HOST,PORT,DB)


# 环境初始化
class Config:
    DEBUG = False
    TESTING = False

    SECRET_KEY = 'Rock'

    SQLALCHEMY_TRACK_MOOIFICATIONS = False



# 每一个环境
class DevelopConfig(Config):

    DEBUG = True

    DATABASE ={
        'ENGINE': 'mysql',
        'DRIVER': 'pymysql',
        'USER': 'root',
        'PASSWORD':'123.com',
        'HOST': 'localhost',
        'PORT': '3306',
        'DB': 'test'
    }

    SQLALCHEMY_DATABASE_URL = get_db_uri(DATABASE)


# 测试环境
class TestingConfig(Config):
    TESTING  = True

    DATABASE = {
        'ENGINE': 'mysql',
        'DRIVER': 'pymysql',
        'USER': 'root',
        'PASSWORD': '123.com',
        'HOST': 'localhost',
        'PORT': '3306',
        'DB': 'test'
    }

    SQLALCHEMY_DATABASE_URL = get_db_uri(DATABASE)


# 每一个环境
class StagingConfig(Config):
    DATABASE = {
        'ENGINE': 'mysql',
        'DRIVER': 'pymysql',
        'USER': 'root',
        'PASSWORD': '123.com',
        'HOST': 'localhost',
        'PORT': '3306',
        'DB': 'test'
    }

    SQLALCHEMY_DATABASE_URL = get_db_uri(DATABASE)


# 每一个环境
class ProductConfig(Config):

    DATABASE = {
        'ENGINE': 'mysql',
        'DRIVER': 'pymysql',
        'USER': 'root',
        'PASSWORD': '123.com',
        'HOST': 'localhost',
        'PORT': '3306',
        'DB': 'test'
    }

    SQLALCHEMY_DATABASE_URL = get_db_uri(DATABASE)


envs = {
    'develop':DevelopConfig,
    'testing': TestingConfig,
    'staging': StagingConfig,
    'product': ProductConfig,
    'default': DevelopConfig
}

App/views:

import random

from flask import Blueprint

from App.ext import db
from App.models import Person

blue = Blueprint('first_blue',__name__)

def init_first_blue(app):
    # 注册化蓝图
    app.register_blueprint(blueprint=blue)


@blue.route('/')
def index():
    return 'hello world'


@blue.route('/index')
def add_person():

    person = Person()
    person.p_name = '你喜欢的%d'% random.randrange(100)

    person.p_age = random.randrange(100)

    db.session.add(person)
    db.session.commit()

    return 'Add success'

拓展：

py 脚本 --》 py 包 （confact ）