I think this question gets into the weeds of Rails, but here goes: I’m trying to figure out how to display the owner or owners of each group on the group index page (equivalent to this page). My starting point is the group model, which implies to me that the group owners trait is not directly attached to a group (as opposed to, say,“full_name”, which I can see is part of the group schema at the bottom of that link). So it’s clear that I can’t call group.owners like I can call group.full_name. Similarly, I don’t think I can get the info back from the API by retrieving info about a group, because “owners” doesn’t seem to be one of the returned values. How would I get back the owners of a group to display that info?

I’m not totally clear on what you are trying to achieve, but I think you are looking for GroupUser. You can get a list of group_ids and their owners’ user_ids using something like: GroupUser.where(owner: true).pluck("group_id", "user_id")

Thanks, this is definitely a step forward. My goal is to display the owners of a group under the group name on the group index page. EDIT: For example, something like this: {{#if showFullName}} {{group.full_name}} {{#each group.group_users as |gUser|}} {{#if gUser.owner}} {{gUser.user.name}} {{/if}} {{/each}} {{else}} {{group.displayName}} {{/if}} This doesn’t quite work. What’s missing?

You’ll need to write a small plugin to serialize the correct information. I saw your #marketplace post. Hopefully someone will take you up on that! If you want to start seriously exploring plugins, you might consider checking out Learn how to start building stuff for Discourse if you're newbie (like myself) I hacked something together as a super rough proof of concept that might give you a starting point to figure it out on your own: my-plugin/plugin.rb # frozen_string_literal: true # name: Group Test # about: Group Test # version: 0.1 # authors: Tester # url: https://github.com/someone/something enabled_site_setting :group_test_enabled after_initialize do add_to_serializer(:basic_group, :owners) do GroupUser.where(group_id: object.id, owner: true).pluck("user_id") end end my-plugin/config/settings.yml plugins: group_test_enabled: default: false client: true In a theme’s tab {{#if showFullName}} {{group.full_name}} {{else}} {{group.displayName}} {{#each group.owners as |owner|}} {{#if owner}} {{owner}} {{/if}} {{/each}} {{/if}} If you put all of that together and enable the plugin in your site settings, you should see the user ids of the group owners listed on the groups page. I won’t be able to help beyond that, so best of luck!

This is extremely helpful–thanks. Understood you’re not able to provide further code help, but I’m hoping I can ask two general questions that others might find helpful too: –Can you say briefly why a serializer is necessary here? (trying to understand not only for this but also other customizations) And just a quick q–could I achieve this just in my dashboard? (creating a plugin would be a lot more organized for sure, but as I’m on a hosted plan I’m not able to directly import new plugins–it at least takes a few more steps)

[صورة] JQ331: Can you say briefly why a serializer is necessary here? (trying to understand not only for this but also other customizations) Sure :slight_smile: The data isn’t exposed by default in the BasicGroupSerializer. We only include what we need. It’s a bit of a maze to follow, but the only reason the groups-info component has what it has available is because it’s passed group from it’s parent template: app/assets/javascripts/discourse/app/templates/groups/index.hbs d3c972c30 {{groups-info group=group}} And the parent template gets it from the controller: app/assets/javascripts/discourse/app/controllers/groups-index.js d3c972c30 this.set("groups", groups); [صورة] JQ331: could I achieve this just in my dashboard I’m afraid not. Unless there’s some magic I’m not aware of!

Awesome. Thank you very much for this helpful info.

Edit: moved here after realizing the question I asked is more appropriate for a separate topic.

Hi @tshenry, I am trying to get a plugin going that includes some code like you provided above for exposing the group owner. One question I am sorting through: –the relevant model here is “group” (that is referenced by the groups-info) –but in the serializer, you don’t say: add_to_serializer(:group, :owners)… Instead of referencing :group, you reference :basic_group, like: add_to_serializer(:basic_group, :owners) Why do you reference basic_group, instead of group, in add_to_serializer?

[صورة] JQ331: Why do you reference basic_group, instead of group, in add_to_serializer? It’s because ‘basic_group’ is the name of the serializer in this case: discourse/app/serializers/basic_group_serializer.rb at main · discourse/discourse · GitHub

How did you identify that serializer as being the right one for this case? This is what I can gather: In the groups controller, in the index action, there is a render_json_dump function (or method) that includes the BasicGroupSerializer in the serialize_data call. The relevant page for displaying groups data is the groups index, so the index action in the controller is the right one to look at here. Is that how you know that the BasicGroupSerializer is the right one to reference here? If that’s all correct, then would the GroupShowSerializer be used for when displaying the group show page, because that’s the serializer referenced in the show action in the controller? (the page with the details of a group–though there does not seem to be a “groups.show” view). And then what about if there is no serializer referenced, such as in the new action in the controller?

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JQ331 5 يونيو 2020، 2:51م 8

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كيفية استعادة مالكي المجموعة؟ (سؤال حول كود Rails)

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