have good day and night for everybody.
i’m new in dash and i want ask a question, now i am making a project and getting data from kepserver so, i want to see data interactivity and manipulations. for design i need to get the data of the dropdown and show it as a checkbox. i’m searching a solution but i didn’t find since 1 week.
i need to help, can anyone help me for this problem.
thank you for now.
Hi @ceyhun and wellcame!
Your question is not so clear to me.
Dropdown allow the user to select option from a list and checkbox do something similar, explain a little bit how is the process you need and where are your doubts.
You are right, ı did not explain it clearly.
For exemple i have 30 option in dropdown, i want to choose 5 of them and show this 5 optiom on check box
I hope so, i could explain it.
14 Oca 2021 Per 04:58 tarihinde Eduardo via Plotly Community Forum <plot@discoursemail.com> şunu yazdı:
Hi @ceyhun ,
The question seams to be easy, but it takes me more than I expected.
For some reason I don’t understand the program gave me an error when passing the ‘options’ to the Checklist. I pass [{‘label’: ‘Option3’, ‘value’: ‘Option3’}, {‘label’: ‘and 20 more’, ‘value’: ‘and 20 more’}] and the ERROR said that I passed 2 arguments 
Finally I add an additional [ ] and it works. Hope someone can explain it to me. 
This is the basis code you can adapt to your needs:
import dash
import dash_html_components as html
import dash_core_components as dcc
from dash.dependencies import Input, Output, State
external_stylesheets = ['https://codepen.io/chriddyp/pen/bWLwgP.css']
app = dash.Dash(__name__, external_stylesheets=external_stylesheets)
app.layout = html.Div([
dcc.Dropdown(
id='dropdown',
options=[
{'label': 'Option1', 'value': 'Option1'},
{'label': 'Option2', 'value': 'Option2'},
{'label': 'Option3', 'value': 'Option3'},
{'label': 'and 20 more', 'value': 'and 20 more'},
],
value=['Option3', 'and 20 more'],
multi=True,
),
dcc.Checklist(
id='checklist')
])
@app.callback(
[Output('checklist', 'options')],
[Input('dropdown', 'value')])
def update_output(dropdown_value):
options = [[{'label': i, 'value': i} for i in dropdown_value]]
return options
if __name__ == '__main__':
app.run_server(debug=True)
But it shows only one option, how can we show our all selected options
14 Oca 2021 Per 12:41 tarihinde Eduardo via Plotly Community Forum <plot@discoursemail.com> şunu yazdı:
In the dropdown add as many option as you want (You also can provide a list from another callback), then the user can select as many option as he/she want.
All options selected in the dropdown will be shown in the Checklist.
eduardo, i’m sure i 'm bothering you, i want to ask a last question 
html.Div(
className='div-for-dropdown',
children=[
dcc.Dropdown(id='stockselector',
options=[{'label': i, 'value': i} for i in data_list],
multi=False,
value = '',
style={},
className='stockselector',
clearable=False,
placeholder = 'Select your parameters...',
),
],
style={}),
html.Div(className='div-for-checklist',
children=[
dcc.Checklist(id = 'choosen_param',
options=[],
labelStyle={'display': 'block', "cursor" : "pointer"},
labelClassName="group-labels",
),
]),
my layout code is that, and my callback code is
@app.callback(
[dash.dependencies.Output('choosen_param', 'options'),],
[dash.dependencies.Input('stockselector', 'value')],
)
def update_output(dropdown_value):
options = [[{'label': i, 'value':i} for i in [dropdown_value]]]
return options
when i choose the dropdown option, i can see the last option of dropdown_list, it changes everytime but i want to add the checklist.
if i can take dropdown as “multi=True”, there is no problem but “False” it doesnt work.
Thank you
Hi @ceyhun
I didn’t see your question, using @ + username notify the user.
I see you solved your issue.
i solved finally anyway, thank you