Un plugin peut-il créer automatiquement un sujet après la création d'une catégorie ?

frank.manuel · Janvier 29, 2021, 5:54

I want every category to have an auto-generated topic, much like default “About the [catgegory name] category” at the top of every category. Is there a way I can hitch on the after_create event of Category? I can’t find any plugin that does anything similar, or even how to insert a topic record.

codinghorror · Février 1, 2021, 2:21

I think you’d need to use the Discourse API to achieve this?

justin · Février 1, 2021, 3:21

There is a DiscourseEvent called category_created.

github.com/discourse/discourse

app/models/category.rb

184cd766a


      
          
          after_destroy :reset_topic_ids_cache
          after_destroy :publish_category_deletion
          after_destroy :remove_site_settings
          
          after_create :delete_category_permalink
          
          after_update :rename_category_definition, if: :saved_change_to_name?
          after_update :create_category_permalink, if: :saved_change_to_slug?
          
          after_commit :trigger_category_created_event, on: :create
          after_commit :trigger_category_updated_event, on: :update
          after_commit :trigger_category_destroyed_event, on: :destroy
          
          after_save_commit :index_search
          
          belongs_to :parent_category, class_name: 'Category'
          has_many :subcategories, class_name: 'Category', foreign_key: 'parent_category_id'
          
          has_many :category_tags, dependent: :destroy
          has_many :tags, through: :category_tags

github.com/discourse/discourse

app/models/category.rb

184cd766a


      
          %i{
            category_created
            category_updated
            category_destroyed
          }.each do |event|
            define_method("trigger_#{event}_event") do
              DiscourseEvent.trigger(event, self)
              true
            end
          end

You’d want to tie into that event and follow this example:

github.com/discourse/discourse-github

plugin.rb

d40c7728b


      
          DiscourseEvent.on(:post_created) do |post|
            if SiteSetting.github_linkback_enabled? &&
              SiteSetting.enable_discourse_github_plugin?
              GithubLinkback.new(post).enqueue
            end
          end

Hope that helps!

frank.manuel · Février 2, 2021, 8:14

This is exactly what I needed! I just KNEW there had to be an event I could catch, I just couldn’t find it. Many thanks!

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Un plugin peut-il créer automatiquement un sujet après la création d'une catégorie ?

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