mattermost-community/focalboard

Bug: Link Unfurl > No text is shown in the preview if the first content block isn't text

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#1,628 opened on Oct 22, 2021

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Description

Steps to reproduce the behavior

  1. Go Boards and create a card
  2. Add an image content block on the top
  3. Add a text content block below it and fill it with text
  4. Copy a link to the card and post it in channels
  5. Note that no text is shown in the preview because it fetches the text from the first content block

Expected behavior

Text from the text content block should be shown in the preview

Edition and Platform

  • Edition: Mattermost plugin
  • Version: main
  • Browser and OS: Chrome on Windows

Contributor guide

Tech stack
typescriptreact
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic understanding of ReactFamiliarity with Focalboard's card rendering
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65
Research direction
Investigate how link unfurl previews extract text from cards. Focus on the preview generation logic, likely in the frontend code. Look for functions that build the preview content from the card's content blocks. The issue states that the first block is used; you need to find where that selection happens and modify it to search for the first text block instead. Check for any utility that extracts text content from blocks, possibly in a file related to card previews or link sharing.