[BUG] Pattern-Matching Callbacks ALL inconsistent order in dash 2.7.1 #2368
Closed
Description
Describe your context
Please provide us your environment, so we can easily reproduce the issue.
- replace the result of
pip list | grep dashbelow
dash 2.7.1
dash-core-components 2.0.0
dash-html-components 2.0.0
Describe the bug
In Dash 2.7.1, the order of Pattern-Matching ALL Inputs will be inconsistent with the order of the elements in the web page, here's how the same code behaves differently in versions 2.7.0 and 2.7.1:
2.7.1
2.7.0
The source code for this example is as follows:
import dash
from dash import html, dcc
from dash.dependencies import Input, Output, State, ALL
app = dash.Dash(__name__)
app.layout = html.Div(
[
html.Button(
'refresh options',
id='refresh-options'
),
html.Br(),
html.Div(
[
*[
dcc.Dropdown(
id={
'type': 'demo-options',
'index': i
},
placeholder=f'dropdown-{i}',
style={
'width': '200px'
}
)
for i in range(2)
],
dcc.Dropdown(
id={
'type': 'demo-options',
'index': 2
},
options=[f'option2-{i}' for i in range(3)],
placeholder='dropdown-2',
style={
'width': '200px'
}
)
]
),
html.Br(),
html.Pre(
id='selected-values'
)
],
style={
'padding': '50px'
}
)
@app.callback(
[
Output(
{
'type': 'demo-options',
'index': 0
},
'options'
),
Output(
{
'type': 'demo-options',
'index': 1
},
'options'
)
],
Input('refresh-options', 'n_clicks'),
prevent_initial_call=True
)
def refresh_options(n_clicks):
return [
[f'option0-{i}' for i in range(3)],
[f'option1-{i}' for i in range(3)]
]
@app.callback(
Output('selected-values', 'children'),
Input(
{
'type': 'demo-options',
'index': ALL
},
'value'
)
)
def update_selected_values(values):
return str(values)
if __name__ == '__main__':
app.run(debug=True)Metadata
Assignees
Labels
No labels