def create_app():
app = Flask(__name__)
#密钥
app.config["SECRET_KEY"] = "shibushishayawoshelemiyao"
#指定session存储方案
app.config["SESSION_TYPE"]="redis"
#设置缓存开头，一般以自己pythonpoackage的app名字为开头
app.config["SESSION_KEY_PREFIX"] = "myapp"
# 定制化的将session存在redis的指定库中
app.config["SESSION_REDIS"] = StrictRedis(host="127.0.0.1", db=5)
app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
#创建数据库文件
# app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///sqlite3.db"
app.config["SQLALCHEMY_DATABASE_URI"] = "mysql+pymysql://root:[email protected]:3306/flask02"
#实例化第三方插件
#实例化Session
sess = Session()
sess.init_app(app)
db.init_app(app)
app.register_blueprint(blue)
return app
def create_app(config_name):
app = Flask(__name__)
app.config.from_object(config[config_name])
config[config_name].init_app(app)
db.init_app(app)
login_manager.init_app(app)
from myapp.api import api as api_blueprint
app.register_blueprint(api_blueprint, url_prefix='/api')
return app
def create_app(config={}):
app = Flask(__name__)
app.config.from_object('myapp.config_dev')
app.config.update(config)
db.init_app(app)
lm.init_app(app)
# app.debug = True
app = register_web_views(app)
app = register_api_views(app)
Bootstrap(app)
return app
def create_app(config_object):
app = Flask(__name__)
app.config.from_object(config_object)
db.init_app(app)
ma.init_app(app)
migrate = Migrate(app, db)
login_manager = LoginManager()
login_manager.init_app(app)
app.jinja_env.globals.update(__builtins__)
app.register_blueprint(short_link_blueprint)
@login_manager.user_loader
def load_user(id):
return User.query.get(int(id))
@app.route("/")
def index():
return render_template("index.html")
@app.route("/<string:link>")
def redirect_to_long_url(link):
url_shortener = URLShortener()
# In case that link contains unsupported by url_shortener chars
try:
long_url_id = url_shortener.decode(link)
except ValueError:
abort(404, f"This short link is not valid")
long_url_db_entry = ShortUrl.query.filter_by(id=long_url_id).first()
if not long_url_db_entry:
abort(404, f"This short link is not valid")
long_url = long_url_db_entry.long_url
# Just in case
# Its good practise to check data on entry and exit
if not validators.url(long_url):
abort(404, f"This long url is not a valid URL!")
# On click increase number of Clicks
long_url_db_entry.clicks.number_of_clicks += 1
db.session.commit()
return redirect(long_url)
@app.route("/admin_login", methods=["GET", "POST"])
def login_for_admin():
#print(f"Referer - {request.referrer}")
if current_user.is_authenticated:
flash("You are already logged in!")
# NO redirect to referer, coz there is no referer
return redirect(url_for("index"))
login_form = LoginForm()
if login_form.validate_on_submit():
user = User.query.filter_by(username=login_form.username.data).first()
if user and user.check_password(password=login_form.password.data):
login_user(user, remember=True)
flash("You are now logged in!")
# NO redirect to referer, coz there is no referer
return redirect(url_for("index"))
else:
flash("Invalid username or password")
return redirect(url_for("login_for_admin"))
return render_template("login.html", form=login_form)
@app.route("/admin")
@login_required
def admin_view():
links = (
ShortUrl.query.join(ShortUrl.clicks)
.order_by(db.desc(Click.number_of_clicks))
.limit(10)
.all()
)
return render_template("admin.html", links=links)
@app.route("/logout")
@login_required
def logout():
logout_user()
flash("You are now logged out!")
return redirect(url_for("index"))
@app.errorhandler(404)
def not_found(error):
return render_template("404.html"), 404
@app.errorhandler(500)
def internal_error(error):
db.session.rollback()
return render_template('500.html'), 500
return app
from myapp.utils import get_instance_folder_path
from myapp.api_routes import *
from myapp.config import configure_app
from myapp.models import db
###############################################################################
# Initialise
#############
app = Flask(__name__,
instance_path=get_instance_folder_path(),
instance_relative_config=True)
configure_app(app) # load configurations
db.init_app(app) # init app to db
###############################################################################
# Error Handling
#################
@app.errorhandler(404)
def page_not_found(error):
app.logger.error('Page not found: %s', (request.path, error))
return "404"
@app.errorhandler(500)
def internal_server_error(error):
from flask import Flask
from myapp.models import db
# 重点关注py2与py3的import区别，相对路径与绝对路径
# python2缺省为相对路径导入，python3缺省为绝对路径导入,python2缺省会搜索上一级目录、上上级目录
# from .views.simple_page import simple_page #py2 from .views.simple_page import simple_page
# # ValueError: Attempted relative import in non-package
# from views.simple_page import simple_page #py2 from ..models import db
# # ValueError: Attempted relative import beyond toplevel package
from myapp.views.simple_page import simple_page # py2 ok!
from myapp.views.simple_view import simple_view # py3 ok!
print("__name__", __name__)
app = Flask(__name__)
app.config.from_pyfile('config.py')
app.register_blueprint(simple_page, url_prefix='/pages')
app.register_blueprint(simple_view, url_prefix='/views')
db.init_app(app)
@app.teardown_request
def shutdown_session(exception=None):
db.session.remove()
if __name__ == '__main__':
print(vars(app))
app.run()