run() add new parameter hide_all_callbacks#3564
Conversation
dash/_callback.py
Outdated
| config_prevent_initial_callbacks = _kwargs.pop( | ||
| "config_prevent_initial_callbacks", False | ||
| ) | ||
| config_hide_all_callbacks = _kwargs.pop("config_hide_all_callbacks", False) |
There was a problem hiding this comment.
How are those actually insert when using @callback directly? I think we need a better system for those since we want the same behavior for both @app.callback and @callback.
Think you can refactor these config into a context and use the context instead of passing them around?
There was a problem hiding this comment.
How are those actually insert when using
@callbackdirectly? I think we need a better system for those since we want the same behavior for both@app.callbackand@callback.Think you can refactor these config into a context and use the context instead of passing them around?
Yes, similarly, for prevent_initial_callbacks, the callback functions defined by dash.callback() cannot obtain the setting values from dash.Dash() too.
…config_hide_all_callbacks in _callback.callback()
|
Taking the following application as an example, both the 
import dash
from dash import html, Input, Output, State
app = dash.Dash(__name__, hide_all_callbacks=True, prevent_initial_callbacks=True)
app.layout = html.Div(
[
html.Div(
[
html.Button("Button 1", id="button1"),
html.Button("Button 2", id="button2"),
html.Button("Button 3", id="button3"),
]
),
html.Div(0, id="output"),
],
style={"padding": 50},
)
@app.callback(
Output("output", "children"),
Input("button1", "n_clicks"),
State("output", "children"),
prevent_initial_call=True,
)
def button1_update_output(n_clicks, children):
return children + 1
@dash.callback(
Output("output", "children", allow_duplicate=True),
Input("button2", "n_clicks"),
State("output", "children"),
)
def button2_update_output(n_clicks, children):
return children + 1
@app.callback(
Output("output", "children", allow_duplicate=True),
Input("button3", "n_clicks"),
State("output", "children"),
prevent_initial_call=True,
hidden=False,
)
def button3_update_output(n_clicks, children):
return children + 1
if __name__ == "__main__":
app.run(debug=True) |
dash/_callback.py
Outdated
| config_prevent_initial_callbacks = _kwargs.pop( | ||
| "config_prevent_initial_callbacks", False | ||
| # Get prevent_initial_callbacks and hide_all_callbacks from get_app().config | ||
| current_app_config = get_app().config |
There was a problem hiding this comment.
Nice usage of get_app, but this will not work if the app hasn't been instanced yet which we can't guarantee with dash.callback.
We can defer it all and map the configs values in the _setup_server after this line:
Line 1648 in a9a173f
…ch callback function through the hide_all_callbacks parameter
|
After refactoring, the current
Example application: 
import dash
from dash import html, Input, Output, State
@dash.callback(
Output("output", "children", allow_duplicate=True),
Input("button2", "n_clicks"),
State("output", "children"),
prevent_initial_call=True,
)
def button2_update_output(n_clicks, children):
return children + 1
app = dash.Dash(__name__, hide_all_callbacks=True)
app.layout = html.Div(
[
html.Div(
[
html.Button("Button 1", id="button1"),
html.Button("Button 2", id="button2"),
html.Button("Button 3", id="button3"),
]
),
html.Div(0, id="output"),
],
style={"padding": 50},
)
@app.callback(
Output("output", "children"),
Input("button1", "n_clicks"),
State("output", "children"),
prevent_initial_call=True,
)
def button1_update_output(n_clicks, children):
return children + 1
@dash.callback(
Output("output", "children", allow_duplicate=True),
Input("button3", "n_clicks"),
State("output", "children"),
prevent_initial_call=True,
hidden=False,
)
def button3_update_output(n_clicks, children):
return children + 1
if __name__ == "__main__":
app.run(debug=True) |
|
Because this is primarily used for debugging, would it make more sense to put this into the |
This is indeed more in line with the purpose of development and debugging. I'll look into how to refactor it. |
CNFeffery
changed the title
3 participants
For the scenario corresponding to #3493, add a new parameter
hide_all_callbackstoDash(), which is used to change the default application value of thehiddenparameter inapp.callback(), improving the convenience of callback debugging for complex applications. Example: