# Creating a component to show last-chance warning when replying to old topics

**URL:** https://meta.discourse.org/t/creating-a-component-to-show-last-chance-warning-when-replying-to-old-topics/382689
**Category:** Development
**Created:** [September 15, 2025, 3:21pm UTC](https://meta.discourse.org/t/creating-a-component-to-show-last-chance-warning-when-replying-to-old-topics/382689 "2025-09-15T15:21:02Z")
**Posts on this page:** 1
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### Author: ![CT075](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/ct075/32/375367_2.png) [@CT075](https://meta.discourse.org/u/CT075)
#### Post date: [September 15, 2025, 3:21pm UTC](https://meta.discourse.org/t/creating-a-component-to-show-last-chance-warning-when-replying-to-old-topics/382689/1 "2025-09-15T15:21:02Z")

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Hello,

I’m running a community that historically has a bit of a problem with necro-bumping threads.

I _am_ familiar with `warn_reviving_old_topic_age` (and we do have it set), but it seems that many users aren’t seeing the alert. We also don’t want to institute global topic timers because there really are use cases where reviving the old thread is useful.

Our previous solution was to block posting on an “are you sure” dialog based on this component:

> [@Warn admins/tl4 when replying to closed topics](https://meta.discourse.org/t/warn-admins-tl4-when-replying-to-closed-topics/83912):
>
> [Admin Warnings Theme Component](https://github.com/davidtaylorhq/discourse-admin-warnings) https://github.com/davidtaylorhq/discourse-admin-warnings When admins click ‘reply’ on a closed topic, they will be warned. This helps to prevent admins accidentally continuing a closed/archived discussion (much to the frustration of other forum users!). Warning text is configurable as a theme setting. To install, follow the instructions here:

however, both our necro-warning and the linked component above no longer seems to work (an out-of-the-box install of the admin-warnings thread allows me to post in closed topics unimpeded).

How should I proceed? I’m not afraid of getting my hands dirty and building my own component/plugin from the ground, but I’ve been struggling to find documentation on where to start.

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_[View the full topic](https://meta.discourse.org/t/creating-a-component-to-show-last-chance-warning-when-replying-to-old-topics/382689)._