KB categories based on selected Knowledge bases in portal

[New Developer_S]

Hi,

I am looking to find a way so that when a user manually selects a knowledge base from the our customized Portal, the search widget only searches within that specific KB and get the particular KB categories in that Knowledge base.. At present, it is returning All results from all KBs- which is not a desired solution.

To Eloborate :

We have 2 Knowledge Bases:

When One KB is selected, All KB categories ( which are also included in 2nd Knowledge base ) are fetched.

We are using KB Categories - KBv3 widget. How to customise in order to get KB categories bases on selected Knowledge bases ? where should we change the code ? 

Please advice.

Thanks in advance,

Tia

[New Developer_S]

Hi Ravi,

The above mentioned Knowledge bases are already mentioned .My Concern is - when we select one of the knowledge bases, then the KB categories related to that particular  Knowledge base should appear in the KB categories widget. where to make changes to the KB categories widget according to the Knowledge base selected in the previous page ?