게시물 내용을 일부 숨기고 "로그인 후 보기" 또는 "답글 후 보기" 기능을 사용할 수 있게 해주세요

[Jagster (Jakke Flemming)]

You can show name of a topic and hide topic itself showing request to login, but I don’t know any ready-to-use solutions hide only partially.

This is doing almost wanted, but then all categories should be with limited access. But that you are looking for.

Discourse Category Lockdown

This plugin allows you to restrict access to topic pages in a category. Topic titles will still show up in topic lists, search, user activity & digest emails. This is a great way to advertise the activity in a “members-only” category, which may charge for access. It IS NOT designed to keep the contents of the category 100% private - if someone is determined enough they will be able to piece together the content from search results. Each category has a couple of new settings in the Security tab…

@Dennis_P_Z

or to users who have not replied?

If so how could anyone reply ever then? It would hide that topic then for everyone but OP.