Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

stevene0005 — Thu, 20 Apr 2023 19:31:40 GMT

Sure thing Peter, just sent an email to support@appian.com.

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

Peter Lewis — Thu, 20 Apr 2023 17:58:19 GMT

Yes this does look like a bug to me - I was able to replicate it as well. Would you mind opening a support case to submit this? That makes it easier for us to track this 🙂

Thanks for reporting!

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

stevene0005 — Thu, 20 Apr 2023 15:09:45 GMT

This was just a test interface to show/explain a bug. The actual interface had ID fields from a database as the Value & Description fields from a database as the Choices. A description had not been added to 3 of the 100+ rows. Having a dropdown with 100+ choices but 1 or more of them being blank causes this issue (Stefan replicated it & added a video).

I had forgotten to mention in the post originally, but for the users, this issue was causing the entire page to turn into a gray screen (needing to manually refresh the web-page to fix). But for me it was looking like a page refresh, although selected values on the page were being retained for me.

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

stevene0005 — Thu, 20 Apr 2023 15:04:49 GMT

Right, thanks Stefan. This was just a test script since I cannot show the actual data, but it was a dropdown that needed to include deleted/historical values so they did not want any filters applied. I had to meet with them to get confirmation on how to update the database to resolve the issue, it is fixed now, so just wanted to share in case anyone else runs into this issue.

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

Harshit Bumb (Appyzie) — Thu, 20 Apr 2023 11:01:11 GMT

Yes. It works now.

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

Stefan Helzle — Thu, 20 Apr 2023 10:55:58 GMT

I changed the format to mp4. Does that work for you?

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

Harshit Bumb (Appyzie) — Thu, 20 Apr 2023 10:43:59 GMT

Not sure if it is only for me -

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

JayaPrakash Ravipati — Thu, 20 Apr 2023 07:18:26 GMT

Hi,

Slight correction in your code hope it will help you for the null values

a!localVariables(
  local!choices: reject(fn!isnull,touniformstring({enumerate(15), "", enumerate(89)})),
  local!values: enumerate(count(local!choices)),
  local!selection: null,
  a!sectionLayout(
    contents: a!dropdownField(
      label: "Dropdown",
      placeholder: "-- Select a Value --",
      choiceLabels: local!choices,
      choiceValues: local!values,
      value: local!selection,
      saveInto: local!selection
    )
  )
)

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

shuaibs6722 — Thu, 20 Apr 2023 07:04:22 GMT

What I understood is that the choice values are the Ids that are not null but the choice labels are non id fields that are nullable, here you need to put a filter on the query to return only that data which will not have nulls in the field used in the choice labels.

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

Stefan Helzle — Thu, 20 Apr 2023 06:11:57 GMT

Peter Lewis this seems to be a bug. I attached a video showing the behaviour.

community.appian.com/.../Bildschirmaufnahme-2023_2D00_04_2D00_20-um-08.09.07.mp4

RE: Auto-refresh issue on scrolling in dropdown of 100+ choices with 1+ null choice label, on a monitor

GopalK — Thu, 20 Apr 2023 05:49:24 GMT

when you are configuring choice labels and choice values for a dropdown , make sure you have null check for these choices and values. you will not face this error.