richlegrand / dash_devices Goto Github PK

I run the server with this:

app.run_server(
    debug=False,
    host='0.0.0.0',
    loop=main_thread_loop,
    dev_tools_hot_reload=False,
)

Env:

dash                              1.13.4
dash-bootstrap-components         0.10.0
dash-core-components              1.10.1
dash-daq                          0.5.0
dash-devices                      0.1.2
dash-html-components              1.0.3
dash-pivottable                   0.0.1
dash-renderer                     1.5.1
dash-table                        4.8.1

- OS: WSL
- Browser: Edge chrome

Describe the bug

Whenever I change and save code of dependencies of the dash file, it always seems try to reload and fail:

Traceback (most recent call last):
  File "jat/jat/trade_dash.py", line 605, in <module>
    app.run_server(
  File "/home/lxuwsl/miniconda3/lib/python3.8/site-packages/dash_devices/dash.py", line 1987, in run_server
    self.server.run(host=host, port=port, debug=debug, **flask_run_options)
  File "/home/lxuwsl/miniconda3/lib/python3.8/site-packages/quart/app.py", line 1400, in run
    loop.run_until_complete(serve(self, config))
  File "/home/lxuwsl/miniconda3/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
    return future.result()
  File "/home/lxuwsl/miniconda3/lib/python3.8/site-packages/hypercorn/asyncio/__init__.py", line 39, in serve
    await worker_serve(app, config, shutdown_trigger=shutdown_trigger)
  File "/home/lxuwsl/miniconda3/lib/python3.8/site-packages/hypercorn/asyncio/run.py", line 157, in worker_serve
    restart()
  File "/home/lxuwsl/miniconda3/lib/python3.8/site-packages/hypercorn/utils.py", line 168, in restart
    os.execv(executable, [executable] + args)
OSError: [Errno 8] Exec format error

That's weird.

This is really a great project and thanks for making it available. But I wonder what the status is. Looking at it today it's 3k+ commits behind the plotly/dash project. How are we compatible with latest version dash? And what's the longer term strategy of this project? Thanks.

There are some features in newer versions of dash which would be nice to have support for in dash_devices. I'm specifically thinking of the "title" and "update_title" arguments which can be passed to the Dash constructor in vanilla dash.

Resolved: when downgrading from dash version 2.0.0 to 1.12 it worked.

Environment:

dash                         2.0.0
dash-core-components         2.0.0
dash-daq                     0.1.7
dash-devices                 0.1.4
dash-html-components         2.0.0
dash-renderer                1.0.0
dash-table                   5.0.0

• if frontend related, tell us your Browser, Version and OS

  • OS: Ubuntu 21.10
  • Browser: chrome and chromium

Error thrown in console when trying to run example1.py script

Nothing gets rendered to screen. which I think makes sense based on the error.

I expected to be able to run the example script based on the readme.

I doubt this is an actual issue, I could just be missing something simple.

Screenshots

If applicable, add screenshots or screen recording to help explain your problem.

Hi,
I would like to use quart_auth module for login/logout handling. To use this, I need access to the quart application context, but for some reason i cant. Do anyone have an example for getting the current application context, that I can use for storing user login information?

Really cool project, made my day! Can't wait to use it. Been waiting for Dash websocket support for a long time. And the shared-callback model is really clear to understand. Great work.

I want to make a button that changes its text upon click and triggers the next callback (plot update)

@app.callback(
    [Output("interval-graph", "disabled"), 
    Output("start-record-button", "buttonText")],
    [Input("start-record-button", "n_clicks")],
    [State("interval-graph", "disabled")],
)
def stop_GraphUpdate(n_clicks, current):
    if n_clicks == 0:
        return True, "Start record"
    return not current, "Stop Record" if current else "Start Record"

However, if I use callback_shared (which I want), page never loads and the Python script cannot be stopped with Ctrl + C.

Env

dash                      1.13.4
dash-bootstrap-components 0.11.3
dash-core-components      1.10.1
dash-daq                  0.5.0
dash-devices              0.1.3
dash-html-components      1.0.3
dash-renderer             1.5.1
dash-table                4.8.1

Describe the bug

What causes a problem is a button callback. If simplified:

import dash_devices
from dash_devices.dependencies import Input, Output, State
import dash_html_components as html
import dash_core_components as dcc

app = dash_devices.Dash(__name__)
app.config.suppress_callback_exceptions = True


app.layout = html.Div([
    html.Button(
        id = 'start-stop',
        n_clicks=0
        style={'width': 150, 'height':50, 'color':'orange'}
    ), 
])

@app.callback_shared(
    Output("start-stop", "children"),
    [Input("start-stop", "n_clicks")],
)

def button_text(n_clicks):
    if n_clicks == 0 or n_clicks %2 == 0:
        return "Start"
    else:
        return 'Stop'

if __name__ == "__main__":
    app.run_server(
    debug=True,
    host='localhost', port = 5000)
    

Which leads to infinite page loading.

Expected behavior

Observed only for callback_shared, callback behaves as it should.