Mar-22-2019, 11:36 PM
(This post was last modified: Mar-22-2019, 11:44 PM by kintarowonders.)
I am trying to get the Flask tutorial running. However I have ran into a problem of an undefined method used in the tutorial.
There is a typo in the tutorial and it is supposed to just be open_resource
$ flask init-db Traceback (most recent call last): File "/home/john/devel/Flask/flask-tutorial/venv/bin/flask", line 11, in <module> sys.exit(main()) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/flask/cli.py", line 894, in main cli.main(args=args, prog_name=name) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/flask/cli.py", line 557, in main return super(FlaskGroup, self).main(*args, **kwargs) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/core.py", line 717, in main rv = self.invoke(ctx) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/core.py", line 1137, in invoke return _process_result(sub_ctx.command.invoke(sub_ctx)) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/core.py", line 956, in invoke return ctx.invoke(self.callback, **ctx.params) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/core.py", line 555, in invoke return callback(*args, **kwargs) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/decorators.py", line 17, in new_func return f(get_current_context(), *args, **kwargs) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/flask/cli.py", line 412, in decorator return __ctx.invoke(f, *args, **kwargs) File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/click/core.py", line 555, in invoke return callback(*args, **kwargs) File "/home/john/devel/Flask/flask-tutorial/flaskr/db.py", line 21, in init_db_command init_db() File "/home/john/devel/Flask/flask-tutorial/flaskr/db.py", line 14, in init_db with current_app.open_resources('schema.sql') as f: File "/home/john/devel/Flask/flask-tutorial/venv/lib64/python3.7/site-packages/werkzeug/local.py", line 348, in __getattr__ return getattr(self._get_current_object(), name) AttributeError: 'Flask' object has no attribute 'open_resources'flaskr/__init__.py:
import os from flask import Flask def create_app(test_config=None): # create and configure the app app = Flask(__name__, instance_relative_config=True) app.config.from_mapping( SECRET_KEY='dev', DATABASE=os.path.join(app.instance_path, 'flaskr.sqlite'), ) if test_config is None: # load the instance config, if it exists, when not testing app.config.from_pyfile('config.py', silent=True) else: # load the test config if passed in app.config.from_mapping(test_config) # ensure the instance folder exists try: os.makedirs(app.instance_path) except OSError: pass # a simple page that says hello @app.route('/hello') def hello(): return 'Hello, World!' from . import db db.init_app(app) return appflaskr/db.py
import sqlite3 import click from flask import current_app, g from flask.cli import with_appcontext def init_app(app): app.teardown_appcontext(close_db) app.cli.add_command(init_db_command) def init_db(): db = get_db() with current_app.open_resources('schema.sql') as f: db.executescript(f.read().decode('utf8')) @click.command('init-db') @with_appcontext def init_db_command(): """Clear the existing data and create new tables.""" init_db() click.echo('Initialized the database.') def get_db(): if 'db' not in g: g.db = sqlite3.connect( current_app.config['DATABASE'], detect_types=sqlite3.PARSE_DECLTYPES ) g.db.row_factory = sqlite3.Row return g.db def close_db(e=None): db = g.pop('db', None) if db is not None: db.close()
There is a typo in the tutorial and it is supposed to just be open_resource