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Archived discussions · Captured October 28, 2026

Interactivity between different inputs elements in Bokeh

Community Support
Veenit_Shah
Veenit_ShahJul 27, 2016   #1

Hi,

I have the following test data =

{

“prd” : [“a”, “b”, “c”]

“code” : [“1”, “2”, “3”]

}

I have 2 dropdown select elements in my bokeh app. For simplicity sake, let’s call them d1 and d2. d1 shows the all the keys in the above dictionary (prd, code) and d2 should be dynamically reflect what gets selected in d1. For eg. If I select “code” in d1, then d2 dropdown should give me options as (1,2,3)

Is this possible in bokeh? I couldn’t find an example in the repo. Any code examples would be appreciated.

Thank you in advance.

Regards,

V

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George_Skolianos
George_SkolianosJul 27, 2016   #2

Try using a callback function. something like that should work

def change_d2(attr,old, new):

d2.options=data[d1.value]

d1.on_change(‘value’,change_d2)

···

On Wed, Jul 27, 2016 at 12:24 PM, Veenit Shah veenitgshah@gmail.com wrote:

Hi,

I have the following test data =

{

“prd” : [“a”, “b”, “c”]

“code” : [“1”, “2”, “3”]

}

I have 2 dropdown select elements in my bokeh app. For simplicity sake, let’s call them d1 and d2. d1 shows the all the keys in the above dictionary (prd, code) and d2 should be dynamically reflect what gets selected in d1. For eg. If I select “code” in d1, then d2 dropdown should give me options as (1,2,3)

Is this possible in bokeh? I couldn’t find an example in the repo. Any code examples would be appreciated.

Thank you in advance.

Regards,

V

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Veenit_Shah
Veenit_ShahJul 28, 2016   #3

Thank you, George! That really helped

I was missing d2.options=data[d1.value]. I was assigning data[d1.value] to a variable rather than d2.options.

Regards,

V

···

On Wednesday, July 27, 2016 at 3:10:05 PM UTC-5, George Skolianos wrote:

Try using a callback function. something like that should work

def change_d2(attr,old, new):

d2.options=data[d1.value]

d1.on_change(‘value’,change_d2)

On Wed, Jul 27, 2016 at 12:24 PM, Veenit Shah veeni...@gmail.com wrote:

Hi,

I have the following test data =

{

“prd” : [“a”, “b”, “c”]

“code” : [“1”, “2”, “3”]

}

I have 2 dropdown select elements in my bokeh app. For simplicity sake, let’s call them d1 and d2. d1 shows the all the keys in the above dictionary (prd, code) and d2 should be dynamically reflect what gets selected in d1. For eg. If I select “code” in d1, then d2 dropdown should give me options as (1,2,3)

Is this possible in bokeh? I couldn’t find an example in the repo. Any code examples would be appreciated.

Thank you in advance.

Regards,

V

–

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To unsubscribe from this group and stop receiving emails from it, send an email to bokeh+un...@continuum.io.

To post to this group, send email to bo...@continuum.io.

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For more options, visit https://groups.google.com/a/continuum.io/d/optout.

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