58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
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import sqlite3 ## tu rabim nekaj drugega
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import click
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from flask import current_app, g
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from flask.cli import with_appcontext
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def get_db():
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if 'db' not in g:
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g.db = sqlite3.connect(
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current_app.config['DATABASE'],
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detect_types=sqlite3.PARSE_DECLTYPES
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)
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g.db.row_factory = sqlite3.Row
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return g.db
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def close_db(e=None):
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db = g.pop('db', None)
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if db is not None:
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db.close()
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"""
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open_resource() opens a file relative to the flaskr package, which is useful since you won’t necessarily know where that location is when deploying the application later. get_db returns a database connection, which is used to execute the commands read from the file.
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click.command() defines a command line command called init-db that calls the init_db function and shows a success message to the user. You can read Command Line Interface to learn more about writing commands.
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"""
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def init_db():
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db = get_db()
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with current_app.open_resource('schema.sql') as f:
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db.executescript(f.read().decode('utf8'))
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@click.command('init-db')
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@with_appcontext
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def init_db_command():
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"""Clear the existing data and create new tables."""
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init_db()
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click.echo('Initialized the database.')
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def init_app(app):
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app.teardown_appcontext(close_db)
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app.cli.add_command(init_db_command)
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"""
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app.teardown_appcontext() tells Flask to call that function when cleaning up after returning the response.
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app.cli.add_command() adds a new command that can be called with the flask command.
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"""
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