58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
import sqlite3 ## tu rabim nekaj drugega
|
||
|
||
import click
|
||
from flask import current_app, g
|
||
from flask.cli import with_appcontext
|
||
|
||
|
||
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()
|
||
|
||
|
||
"""
|
||
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.
|
||
|
||
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.
|
||
"""
|
||
|
||
|
||
def init_db():
|
||
db = get_db()
|
||
|
||
with current_app.open_resource('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 init_app(app):
|
||
app.teardown_appcontext(close_db)
|
||
app.cli.add_command(init_db_command)
|
||
|
||
|
||
"""
|
||
app.teardown_appcontext() tells Flask to call that function when cleaning up after returning the response.
|
||
|
||
app.cli.add_command() adds a new command that can be called with the flask command.
|
||
"""
|
||
|