Extension API crashes while extracting worksheet data

[mohit-rana85]

Describe the issue

I am facing an issue related to tableau extension api. The api fails while extracting the worksheet data by using the methods getSummaryColumnsInfoAsync or getSummaryDataAsync.

Version information:

• Tableau desktop version 2021.1
  • API Extension version: https://extensions.tableauusercontent.com/resources/tableau.extensions.1.latest.js and https://extensions.tableauusercontent.com/resources/tableau.extensions.1.latest.min.js
• Browser: Chromium 79
• OS: Windows 10

Steps to reproduce (please include a code snippet, if possible):

1. Code: await worksheet.getSummaryColumnsInfoAsync().then(async colNames => { para1ColId = colNames.find(col => col.fieldName.toLowerCase() === 'para1').fieldId; para2ColId = colNames.find(col => col.fieldName.toLowerCase() === 'para2').fieldId; });
2. Error; Cannot read property 'fieldId' of undefined
3. In the debugging mode: Chromium shows an error: Debugging connection was closed. Reason: WebSocket disconnected.

A clear and concise description of what you expected to happen. I expect to get list of all columns in the worksheet and their corresponding colID.

Screenshots and workbook

If possible, attach a workbook with sample data add/or screenshots to help explain your problem.

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[johnDance]

Hi @mohit-rana85 : It appears that the find did not find 'para1' or 'para2' in the column names. Can you put a breakpoint on the first colNames.find, and then look at the contents of colNames? You should be able to see if there is a fieldName in the array of para1 and para2.

If you would like you could dump colNames to the console and then look at the fieldId and fieldName of each of the columns in your summary data.

Let us know what you find. Thanks, John