I’m looking for a way to implement a category as a simple marketplace where users can purchase an ad (read post). It looks like the subscriptions plugin will allow a paid addition to a group, and then when the subscription is cancelled, either manually or programmatically, it removes the user. Wha…

I believe this set of permissions would allow what I’m asking given that ‘marketplace’ is the subscription group. [marketplace]

I think you’d need a plugin that would remove them from the group when creating a topic in the ad category. I don’t the the automation plugin will remove users from groups.

Well, I can’t code myself, and since this would be a proof of concept before I could get my boss to support it I don’t have a way to offer any monetary support at this time. Anyone else think something like this would be good for the community? One other consideration, is there any communication b…

[image] tknospdr: this would be a proof of concept before I could get my boss to support it I don’t have a way to offer any monetary support at this time. You’d just have to tell him to use his imagination for the proof of concept. You could likely do it with webhooks and one of those webho…

[image] pfaffman: It would make the plugin more complicated. For sure, but would be cool to have. Anyway, it looks like this would do the job as long as you hard code the category ID and group name. Can any real coders expand on this so that you can set those variables from the plunin’s set…

That could work! Start with the Discourse-plugin-skeleton, make that your plugin.rb and maybe see what Ask.discourse.com can do to help. And use add_model_callback instead of Discourse.event. You can look in the all_the_plugins repo for some examples.

Both grok and ask.discourse.com say to install the plugin @ /var/discouse/plugins/. Problem is that I don’t have that path, either inside or out of the container. The closest I can find is inside the container I have /var/www/discourse/plugins/. When I try to install it there and rebuild, it disap…

Think I got git going, installed the plugin and got some errors. This is honestly where I’m lost. /var/www/discourse/plugins/discourse-auto-remove-group/plugin.rb:9:in `activate!': undefined method `register_site_setting' for an instance of Plugin::Instance (NoMethodError) You are unable to start …

Do you have a development instance set up?

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Product Support

tknospdr (David Muszynski) May 20, 2025, 7:19pm 12

Holy crap! After several more conversations with Ask Discourse and Grok. The plugin is now working.

I guess AI really IS useful sometimes.

It’s ugly, but confirmed to be working.

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Is it possible to use the subscription plugin to limit creating topics in a category to subscribers? Product Support subscriptions	1	135	February 18, 2026
Addding a paid group who can reply to topics but not create them Product Support subscriptions	6	430	May 19, 2025
Plugin for paid posts Marketplace	3	1991	July 18, 2017
Subscriber group automation (Remove and Add users to specific group with subscription) Feature	1	157	April 8, 2026
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