fix: correct Slack webhook example code in documentation #21295
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- Fix ReferenceError by changing 'text: body' to 'text: body_markdown' on line 118 (the variable 'body' was never defined; should use 'body_markdown' from req.body) - Fix invalid_blocks API error by changing header block text type from 'mrkdwn' to 'plain_text' on line 122 (Slack's header block type only supports plain_text, not mrkdwn) - Rename 'title_markdown' to 'title' since the header block uses plain_text type, not markdown (variable names should reflect their actual content) These errors were preventing webhook messages from being sent to Slack.
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Pull request overview
This PR fixes two bugs in the Slack webhook integration example code that would prevent it from working correctly. The first fix resolves a ReferenceError by using the correct variable name (body_markdown instead of undefined body), and the second fix corrects the Slack API usage by changing the header block text type to plain_text (the only supported type for headers) instead of mrkdwn.
- Fixed undefined variable reference in Slack message text field
- Corrected Slack header block to use
plain_texttype as required by Slack's Block Kit API - Updated variable naming from
title_markdowntotitlefor consistency with plain text usage
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Summary
Fixes two bugs in the Slack webhook example code that prevented messages from being sent to Slack:
ReferenceError: body is not defined - Changed
text: bodytotext: body_markdown(line 118)bodywas never defined in the webhook handlerbody_markdownwhich is extracted from the request body on line 92Invalid header block type - Changed header block text type from
mrkdwntoplain_text(line 122)Related Issue
Fixes #21294