Is there a document introducing the database schema design?

xdzhang · November 30, 2020, 12:57pm

I’m study how discourse was implemented, and I hope to understand each fields in schemas of discourse database, so that I can quickly know the meaning of things done by ruby codes.Is there a suite document for me?

david · November 30, 2020, 1:10pm

The best source of schema information is probably the annotations at the bottom of fiiles in the app/models directory. For example, the posts table columns are

github.com/discourse/discourse

app/models/post.rb

e7bad9f05


      
          # == Schema Information
          #
          # Table name: posts
          #
          #  id                      :integer          not null, primary key
          #  user_id                 :integer
          #  topic_id                :integer          not null
          #  post_number             :integer          not null
          #  raw                     :text             not null
          #  cooked                  :text             not null
          #  created_at              :datetime         not null
          #  updated_at              :datetime         not null
          #  reply_to_post_number    :integer
          #  reply_count             :integer          default(0), not null
          #  quote_count             :integer          default(0), not null
          #  deleted_at              :datetime
          #  off_topic_count         :integer          default(0), not null
          #  like_count              :integer          default(0), not null
          #  incoming_link_count     :integer          default(0), not null
          #  bookmark_count          :integer          default(0), not null

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TallTrees · November 30, 2020, 2:29pm

The Data Explorer Plugin might be worth a look too. It has the tables and columns listed out.

tyler.lamparter · January 23, 2025, 5:06am

Been a while here, but if you have the Data Explorer Plugin, you can also use the api to fetch everything: /admin/plugins/explorer/schema.json.

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Is there a document introducing the database schema design?

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