Implement FEP 7888: Part 1 - publish conversation context (#35959)

app/models/conversation.rb

@@ -4,10 +4,12 @@
 #
 # Table name: conversations
 #
-#  id         :bigint(8)        not null, primary key
-#  uri        :string
-#  created_at :datetime         not null
-#  updated_at :datetime         not null
+#  id                :bigint(8)        not null, primary key
+#  uri               :string
+#  created_at        :datetime         not null
+#  updated_at        :datetime         not null
+#  parent_account_id :bigint(8)
+#  parent_status_id  :bigint(8)
 #
 
 class Conversation < ApplicationRecord
@@ -15,7 +17,24 @@ class Conversation < ApplicationRecord
 
   has_many :statuses, dependent: nil
 
+  belongs_to :parent_status, class_name: 'Status', optional: true, inverse_of: :conversation
+  belongs_to :parent_account, class_name: 'Account', optional: true
+
+  scope :local, -> { where(uri: nil) }
+
+  before_validation :set_parent_account, on: :create
+
   def local?
     uri.nil?
   end
+
+  def object_type
+    :conversation
+  end
+
+  private
+
+  def set_parent_account
+    self.parent_account = parent_status.account if parent_status.present?
+  end
 end

app/models/status.rb

@@ -70,6 +70,8 @@ class Status < ApplicationRecord
     belongs_to :reblog, foreign_key: 'reblog_of_id', inverse_of: :reblogs
   end
 
+  has_one :owned_conversation, class_name: 'Conversation', foreign_key: 'parent_status_id', inverse_of: :parent_status, dependent: nil
+
   has_many :favourites, inverse_of: :status, dependent: :destroy
   has_many :bookmarks, inverse_of: :status, dependent: :destroy
   has_many :reblogs, foreign_key: 'reblog_of_id', class_name: 'Status', inverse_of: :reblog, dependent: :destroy
@@ -442,7 +444,8 @@ class Status < ApplicationRecord
       self.in_reply_to_account_id = carried_over_reply_to_account_id
       self.conversation_id        = thread.conversation_id if conversation_id.nil?
     elsif conversation_id.nil?
-      self.conversation = Conversation.new
+      conversation = build_owned_conversation
+      self.conversation = conversation
     end
   end