我正在创建一个包含多个选项卡、每个选项卡触发器和.py文件的仪表板,该仪表板呈现不同元素的plotly对象。
例如,我的回调函数返回plots、charts,我希望返回Datatable。
我可以用go.Table渲染pandas数据帧,如示例所示,但不能用DataTable,后者是较新的,并提供了增强的用户体验。
import pandas as pd
import dash
from dash.dependencies import Input, Output, State
import dash_html_components as html
import dash_core_components as dcc
import plotly.plotly as py
from plotly import graph_objs as go
from plotly.graph_objs import *
import dash_table
import flask
from datetime import datetime as dt
from app import app
layout = html.Div([
html.Div([
dcc.Dropdown(
id='select',
options=[{'label': i, 'value': i} for i in List],
value='abc',
placeholder="xyz",
style={'width': '100%'}
),
], style={"width": "15%", "margin-left": "20%", "margin-right": "35%"}),
html.Div([
dash_table.DataTable(
id='my-table',
columns=[{"name": i, "id": i} for i in df_lease.columns],
)
])
])
@app.callback(Output('my-table', 'data'),
[
Input("landlord-select", "value")
]
)
def render_table(company, market):
df_sub1 = df_lease[(df_lease['Landlord'] == company)]
df_sub1 = df_sub1[['UnitNo',
'Commencement_Date',
'Expiration_Date'
]]
return df_sub1.to_dict(orient='records')
预期的行为是将pandas数据帧呈现为DataTable。
- app.py
- index.py
- apps
|-- __init__.py
|-- app1.py
|-- app2.py
py包含呈现多页/选项卡布局的所有代码,以及
dcc.Tabs
更新为传递模板文件(app1.py)中的布局对象。我相信,这就是产生错误的原因。
app.layout = html.Div([
# tabs
html.Div([
dcc.Tabs(
id="tabs",
style={"height":"60","verticalAlign":"middle"},
children=[
dcc.Tab(label="Marketing", value="marketing_tab"),
dcc.Tab(label="Tenants", value="tenants_tab"),
dcc.Tab(label="Portfolio", value="portfolio_tab"),
],
value="marketing_tab",
)
],
className="row tabs_div"
),
# Tab content
html.Div(id="tab_content", style={"margin": "2% 3%"})
])
@app.callback(Output("tab_content", "children"),
[
Input("tabs", "value")
]
)
def render_content(tab):
"""
For user selections, return the relevant tab
"""
if tab == "marketing_tab":
return marketing.layout
elif tab == "tenants_tab":
return tenants.layout
elif tab == "portfolio_tab":
return portfolio.layout
else:
return marketing.layout
# In[10]:
if __name__ == '__main__':
app.run_server(debug=True)
