[Bug] Cannot update cell value when using dtale with flask and redislite or external redis

[bangnh1]

Current Behavior:

1. Access web browser and edit a cell
2. Refresh the site
3. The edited cell have been reverted to old value

Expected Behavior:

• The edited cell keep the value when refresh the site

Steps To Reproduce:

I am using demo code as below.

from flask import redirect

import dtale
import pandas as pd
from dtale.app import build_app
from dtale.views import startup

if __name__ == '__main__':
    app = build_app(reaper_on=False)
    dtale.global_state.use_redis_store('./data')

    @app.route("/create-df")
    def create_df():
        df = pd.DataFrame(dict(a=[1, 2, 3], b=[4, 5, 6]))
        instance = startup(data=df, ignore_duplicate=True)
        return redirect(f"/dtale/main/{instance._data_id}", code=302)

    @app.route("/")
    def hello_world():
        return 'Hi there, load data using <a href="/create-df">create-df</a>'

    app.run(host="0.0.0.0", port=8080)

Environment:

dtale==1.59.1
Flask==2.0.2
redislite==6.0.674960

We are solving problem by setting data to global state in edit_cell function (views.py). Not a good solution but it worked.

global_state.set_data(data_id, data)

[aschonfeld]

@bangnh1 this is actually the correct solution. I think in the global_state upgrades last spring something must have been missed and since the majority of users use the default "in-memory" storage its stays hidden. I can release a hotfix with this fix added. Will update you when it has been released.

Apologies for the inconvenience

[aschonfeld]

@bangnh1 just released v1.60.2 to pypi. Will be on conda-forge shortly. This should solve the issue. Let me know if you any more issues and if you haven't already please toss your ⭐ on the repo. Thanks 🙏