Question

我一直在研究破折号应用程序，但遇到了一些麻烦。我的主要问题是布局-我正在尝试格式化一个下拉菜单，该菜单允许用户选择工作表，然后在页面上输出该工作表的内容。但是，我无法对其进行格式化以使其显示在第二页上。我只能在每个页面上显示它，或者根本不显示它。这是我目前用于布局的内容（即，我希望它显示在timelinesDates页面上）-

app.layout = html.Div([
    dcc.Location(id='url', refresh=True),
    html.Div(id='page-content',
             children =[
             html.H2("Select Target Company"),
             html.Div([dcc.Dropdown(id="field_dropdown", options=[{
                               'label': i,
                               'value': i
                           } for i in dropdown_options],
                           value='Sheet3')],
             style={'width': '25%',
                    'display': 'inline-block'}),
                  dt.DataTable(rows=[{}],
                 row_selectable=False,
                 sortable=False,
                 selected_row_indices=[],
                 id='datatable')
         ])
])

@app.callback(
    dash.dependencies.Output('datatable', 'rows'),
    [dash.dependencies.Input('field_dropdown', 'value')])





@app.callback(dash.dependencies.Output('page-content', 'children'),
              [dash.dependencies.Input('url', 'pathname')]) 

def display_page(pathname):
    if pathname == '/' or pathname == '/overview':
        return overview
    elif pathname == '/timeline-dates':
        return timelineDates,
        def update_datatable(user_selection):
            if user_selection == 'Sheet1':
                return global_df_sheet_to_df_map.parse(0).to_dict('records')
            elif user_selection == 'Sheet2':
                return global_df_sheet_to_df_map.parse(1).to_dict('records')
            else:
                return global_df_sheet_to_df_map.parse(2).to_dict('records')  
    elif pathname == '/further-analysis':
        return furtherAnalysis
    elif pathname =='/excel-data':
        return excelData
    elif pathname == '/full-view':
        return overview,timelineDates,furtherAnalysis, excelData
    else:
        return noPage

破折号布局python

0 个答案: