Forum Discussion

alexisc67's avatar
alexisc67
Helper I
8 years ago

Custom visual drill down in multiple roles

Hi,   I have modified the Flow Map custom visual  from Weiweicui to see if I can make aggregations work in a hierarchy, so a user can drill down/up from a location to country, region, etc in the sa...
drill down roles
alexisc67's avatar
alexisc67
Helper I
8 years ago

Hi,

 

I have modified the Flow Map custom visual  from Weiweicui to see if I can make aggregations work in a hierarchy, so a user can drill down/up from a location to country, region, etc in the same chart. The flow map build the lines from a source and destination, that is, two roles. I want the users to be able to drill down in using both, so a user can see a flow for example from a Country to a Port, and rill down to see from a Port to Port, or Country to Country, etc.

 

I edited the capabilities.json and added the following:

 

    "drilldown": {

        "roles": ["Origin", "Dest"]

    },

 

The chart now shows a new widget like below and seems to work fine. The only problem is that the names in the dropdowns don’t appear. I expect these to be Origin and  Destination, but instead they are ‘undefined’

 

See below:

 

 

 

Can you think of where I look into to fix this. I tried finding documentation about this widget but could not find.

 

Thanks,

Alexis

  • alexisc67's avatar
    alexisc67
    Helper I
    8 years ago

    Hi,

    Here is the inspected select element. The labels are undefined, but the values are correct, therefore the drill downs work.

     

    Thanks,

    Alexis

    • v-viig's avatar
      v-viig
      Community Champion
      8 years ago

      Hi alexisc67,

       

      Looks like Drill-down by multi columns is not supported by Power BI Custom Visuals API.

       

      Have you tried to specify a single column name instead two columns?

       

      Ignat Vilesov,

      Software Engineer

       

      Microsoft Power BI Custom Visuals

      [email protected]

      • alexisc67's avatar
        alexisc67
        Helper I
        8 years ago

        Hi Ignat,

         

        It seems it is suportted. It is just the labels in the drop down that do not show. The functionality is there. I am able to drill down in the two columns with success. The first one is the origin an the second is the destination.The code seems to be there to support it but with a defect on the labels as you can see in the screenshot above with the select xml element. I don't think this is custom code for the visual, I think this widget is in the core Power BI. Can you check that?

        In the screenshot below you can see a function/property $ctrl.canDrillOnMoreThanOneRole()

         

         

        Thanks,

        Alexis