the function vf() (view filter) does not handle with special character as "&" #578

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1. divinorum-webb commented on Mar 8, 2020

   

   divinorum-webb

   on Mar 8, 2020

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   Hey Chady,

   I encountered a similar issue very recently. You can work around this successfully, and it is worth noting that even if TSC scrubbed the '&' value from your filter value, your dashboard would not display the correct data due to the values no longer matching -- so you must fix this on your end.

   First, this is not an error of the TSC library -- the '&' character is used to append additional URL params to your URL string, so when the URL string encounters the '&' in your client's name it assumes the text that follows is an entirely new URL parameter.

   Even though this cannot be fixed from TSC's side, here is how you can resolve the issue:

   1. build a new version of your field in Tableau which removes the '&' character from the field
   2. be sure to use this new field as a filter in your dashboard / view that is published
   3. reference the new field as your vf_ filter value

   Hope that helps,
   Elliott
2. ChadyNassar commented on Mar 9, 2020

   

   ChadyNassar

   on Mar 9, 2020 via email

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   Hi Elliott, Thank you for your quick response. It's very clear. Finally I found a solution thanks to URL-encoding Reference using *string.replace("&","%26)* Have a good day. Chady Le dim. 8 mars 2020 à 01:11, Elliott <notifications@github.com> a écrit :

   …

   Hey Chady, I encountered a similar issue very recently. You can work around this successfully, and it is worth noting that even if TSC scrubbed the '&' value from your filter value, your dashboard would not display the correct data due to the values no longer matching -- so you must fix this on your end. First, this is not an error of the TSC library -- the '&' character is used to append additional URL params to your URL string, so when the URL string encounters the '&' in your client's name it assumes the text that follows is an entirely new URL parameter. Even though this cannot be fixed from TSC's side, here is how you can resolve the issue: 1. build a new version of your field in Tableau which removes the '&' character from the field 2. be sure to use this new field as a filter in your dashboard / view that is published 3. reference the new field as your vf_ filter value Hope that helps, Elliott — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#578?email_source=notifications&email_token=AL3CJQPDJPTGCUHTPCXQ25LRGLPBNA5CNFSM4LBPWQJKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEOEIUTQ#issuecomment-596150862>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AL3CJQNKNSSJY4QNZBKJD43RGLPBNANCNFSM4LBPWQJA> .
3. divinorum-webb commented on Mar 9, 2020

   

   divinorum-webb

   on Mar 9, 2020

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   Hey Chady, that's better than my fix! I'm going to use your approach.
4. vignesh1609 commented on Jul 8, 2020

   

   vignesh1609

   on Jul 8, 2020

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   Hey all, My filters are not working with .vf() i am getting pdf with the filters which is published . can you suggest me how to resolve this issue.
5. bcantoni

   added

   bug

   on Sep 2, 2020
6. TimMoyce commented on Nov 29, 2020

   

   TimMoyce

   on Nov 29, 2020

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   Is there any way of passing multiple parameters to a single view
   I currently have
   pdf_req_option.vf(filter_criteria1, Parameter_StoreBrand)
   but cannot find a solution to add a second criteria. I am aware how to do this using URL parameters but not the TSC module
   Thanks
7. seve-martinez commented on Mar 31, 2021

   

   seve-martinez

   on Mar 31, 2021

   Last edited by seve-martinez

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   Is there any way of passing multiple parameters to a single view
   I currently have
   pdf_req_option.vf(filter_criteria1, Parameter_StoreBrand)
   but cannot find a solution to add a second criteria. I am aware how to do this using URL parameters but not the TSC module
   Thanks

   Hi @TimMoyce,

   If you want to add multiple values such as in a drop-down selection box, you can do something like
   pdf_req_options.vf('filter_name', 'value1,value2,value3')

   If you want to add multiple filters, then you can create a dictionary of your filters and then loop through them like so:

   for k, v in filters.items(): 
        pdf_req_options.vf(k, v)
   
   server.views.populate(view, pdf_req_option)
   

   Please note that you will likely have to do some formatting of your dictionary data before.

   👍React with 👍2Reacted by TimMoyce and Neba Nfonsang
8. jacalata

   added

   Server-Side Enhancement

   on Jun 18, 2026
9. github-actions commented on Aug 18, 2026

   

   github-actionsBot

   on Aug 18, 2026 – with GitHub Actions

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   This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs. If this is still relevant, please comment to keep it open.
10. github-actions

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    stale

    on Aug 18, 2026
11. jacalata commented on Aug 25, 2026

    

    jacalata

    on Aug 25, 2026

    Contributor

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    Sweep note: this is resolved on current TSC. Filter values passed to vf() (request_options.py:352) end up in the params= dict handed to requests in Endpoint.get_request (endpoint.py:200-215), which URL-encodes them - so & is sent as %26 without the caller having to escape it. The unencoded legacy path (apply_query_params) only fires against API < 3.7 (Tableau 2020.1), which is well out of support. Closing.
12. jacalata

    closed this as completedon Aug 25, 2026