init_app.py 文件源码

def init_app(app, extra_config_settings={}):
    # Read common settings from 'app/settings.py'
    app.config.from_object('app.settings')

    # Read environment-specific settings from 'app/local_settings.py'
    try:
        app.config.from_object('app.local_settings')
    except ImportError:
        print("The configuration file 'app/local_settings.py' does not exist.\n"+
              "Please copy app/local_settings_example.py to app/local_settings.py\n"+
              "and customize its settings before you continue.")
        exit()

    # Add/overwrite extra settings from parameter 'extra_config_settings'
    app.config.update(extra_config_settings)
    if app.testing:
        app.config['WTF_CSRF_ENABLED'] = False  # Disable CSRF checks while testing

    # Initialize Flask-SQLAlchemy and Flask-Script _after_ app.config has been read
    #db.init_app(app)

    # Setup Flask-Migrate
    #migrate = Migrate(app, db)
    #manager.add_command('db', MigrateCommand)

    # Setup Flask-Mail
    mail = Mail(app)

    # Setup WTForms CsrfProtect
    #CsrfProtect(app)

    # Define bootstrap_is_hidden_field for flask-bootstrap's bootstrap_wtf.html
    from wtforms.fields import HiddenField

    def is_hidden_field_filter(field):
        return isinstance(field, HiddenField)

    app.jinja_env.globals['bootstrap_is_hidden_field'] = is_hidden_field_filter

    # Setup an error-logger to send emails to app.config.ADMINS
    init_email_error_handler(app)

    # Setup Flask-User to handle user account related forms
    #from app.models import User, MyRegisterForm
    #from app.views import user_profile_page

    #db_adapter = SQLAlchemyAdapter(db, User)  # Setup the SQLAlchemy DB Adapter
    #user_manager = UserManager(db_adapter, app,  # Init Flask-User and bind to app
                               #register_form=MyRegisterForm,  # using a custom register form with UserProfile fields
                               #user_profile_view_function=user_profile_page,
    #)

    #import app.manage_commands