flask app

do not have to specify hostname, username, and password. The database in the URL is the file name of the file on your hard disk.The database URL used by the program must be saved to the Sqlalchemy_database_uri key of the Flask configuration object. There is also a useful option in the configuration object, the Sqlalchemy_on_reardown key, which, when set to True, automatically commits changes in the database after each request is completed.We use the

MAIL_SERVER = 'smtp .googlemail.com' MAIL_PORT = 465 MAIL_USE_TLS = False MAIL_USE_SSL = True MAIL_USERNAME = 'your-gmail-username' MAIL_PASSWORD = 'your-gmail-password' # Administrator list ADMINS = ['your-gmail-username@gmail.com '] In addition, we can initialize a Mail object to connect to the SMTP Mail server and send the Mail: ? 1 2 From flask. ext. mail import Mail Mail = Mail (

this error: Insecureplatformwarning:a True Sslcontext object is not available. This prevents URLLIB3 from configuring SSLAppropriately and may cause certain SSL connections to fail. For more information, https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. And if your Python version is a 2.7.9 version, you'll need to upgrade the Python version, or Pip Install-u requests[security], because the SSL environment provided by Python before 2.7.9 is not safe enough to impro

Overview In the previous section we defined a simple template for the home page, and some of the modules that have not yet been implemented, such as users or posts, use mock objects as temporary placeholders. In this chapter we will see how to fill these blanks with Web forms. Web Forms are the most basic building elements in Web applications, and we will use forms to enable users to post and apply login functionality. To complete the content of this chapter, you will need the microblog

Label:Initialize and configureORM(Object relational Mapper) objects relational mappings. Refers to a relationship object that maps the method that faces the object to a database.Flask-sqlalchemy is a Flask extension, able to support a variety of database background, we can not need to care about SQL processing details, operations database, a basic relationship corresponding to a class, and an entity corresponding to the class instance object, by invok

functions:DataRequired (): Make sure there is data in the fieldEqualto (): Compares the values of two fields for password checkingLength (): validates input string lengthsNumberrange (): Verifies that the value entered is within the range of numbersURL (): Verify URLAnyOf (): Verify that the input values are in the optional list　Note: The Secret_key parameter must be set to use the expansion pack.　　1 fromFlaskImportFlask, Render_template2 3 fromFlask_scriptImportManager4 fromFlask_wtfImportF

Tags: mic str difference view string Gone app statement null valueORM(Object relational Mapper) objects relational mappings.Refers to a relationship object that maps the method that faces the object to a database. Flask-sqlalchemy is a Flask extension, able to support a variety of database background, we can not need to care about SQL processing details, operatio

Http://www.cnblogs.com/mizhon/p/4242073.html[Eclipse]-resolves the unresolved import flask issue that occurs with the Import Flask moduleRecently want to learn about flask, after installing the flask in Eclipse import flask module, found that there will be the following prob

Delete the first line of -f /usr/share/pip-wheels git again.Second, install Flask Database Migration Extension flask-migrateUse to pip install Flask-Migrate install this extension.fromimport Migrate migrate = Migrate(app, db)Add the above code in flask_app.py to enable migrate.Create a directory where the migration wi

() method of the signal to subscribe to the signal. The first parameter is the function to be called when the signal is emitted, and the second parameter is optional to determine the sender of the signal. A signal can have multiple subscribers. You can use the disconnect () method to unsubscribe from the signal. For all core flask signals, the sender is the signal-emitting application. When you subscribe to a signal, make sure that you also provide