Implement a property in the Dash data table component to toggle between case-sensitive and case-insensitive sorting. In the current setup, sorting is case-sensitive, resulting in unexpected order. For example, when sorting alphabetically in descending order, 'CII' comes before 'Cee' due to case sensitivity. By introducing a case-insensitive sorting option, we can ensure consistent and expected behavior in sorting operations.
Workaround:
import dash
from dash import dcc, html, Input, Output
import dash_table
import pandas as pd
# Sample data
data = {
'Name': ['A', 'CII', 'b', 'Cee'],
'Age': [30, 25, 35, 28]
}
df = pd.DataFrame(data)
# Define the custom sorting function
def custom_sorting(data, column, direction):
if direction == 'asc':
return sorted(data, key=lambda x: x[column].lower())
elif direction == 'desc':
return sorted(data, key=lambda x: x[column].lower(), reverse=True)
else:
return data
app = dash.Dash(__name__)
app.layout = html.Div([
dash_table.DataTable(
id='datatable',
columns=[{'name': i, 'id': i} for i in df.columns],
data=df.to_dict('records'),
sort_action='custom', # Enable custom sorting
sort_mode='multi', # Allow sorting by multiple columns
style_table={'overflowX': 'scroll'},
style_cell={'minWidth': '100px', 'width': '100px', 'maxWidth': '100px'},
),
])
# Callback to update the DataTable with custom sorting
@app.callback(
Output('datatable', 'data'),
[Input('datatable', 'data_timestamp'),
Input('datatable', 'sort_by')]
)
def update_table(timestamp, sort_by):
if sort_by:
column_id = sort_by[0]['column_id']
direction = sort_by[0]['direction']
return custom_sorting(df.to_dict('records'), column_id, direction)
else:
# If no sorting, return original data
return df.to_dict('records')
if __name__ == '__main__':
app.run_server(debug=True)
Description:
Implement a property in the Dash data table component to toggle between case-sensitive and case-insensitive sorting. In the current setup, sorting is case-sensitive, resulting in unexpected order. For example, when sorting alphabetically in descending order, 'CII' comes before 'Cee' due to case sensitivity. By introducing a case-insensitive sorting option, we can ensure consistent and expected behavior in sorting operations.
Workaround: