datasette_reload_db.py

from datasette.database import Database
from datasette import hookimpl
from datasette.utils.asgi import Response
import os
`

async def reload_db(datasette):
    spec = datasette.plugin_config('datasette-reload-db')
    db_dir = os.listdir(spec['dir'])
    databases = datasette.databases
    for db in databases:
        if db == '_internal':
            continue
        datasette.remove_database(db)

    for db in db_dir:
        datasette.add_database(Database(
            datasette,
            path=os.path.join(spec['dir'], db),
            is_mutable=True
        ))
    return Response.redirect('/')


@hookimpl
def register_routes():
    return [
        (r"^/-reload-db", reload_db)
    ]


@hookimpl
def menu_links(datasette):
    return [
        {"href": datasette.urls.path("/-reload-db"), "label": "Reload Databases"},
    ]