Fix #50 - Order ancestors/descendants by tree path

app/controllers/api/statuses_controller.rb

@@ -8,8 +8,8 @@ class Api::StatusesController < ApiController
 
   def context
     @status      = Status.find(params[:id])
-    @ancestors   = @status.ancestors.with_includes.with_counters.to_a
-    @descendants = @status.descendants.with_includes.with_counters.to_a
+    @ancestors   = @status.ancestors
+    @descendants = @status.descendants
   end
 
   def create

app/controllers/stream_entries_controller.rb

@@ -9,8 +9,8 @@ class StreamEntriesController < ApplicationController
     @type = @stream_entry.activity_type.downcase
 
     if @stream_entry.activity_type == 'Status'
-      @ancestors   = @stream_entry.activity.ancestors.with_includes.with_counters
-      @descendants = @stream_entry.activity.descendants.with_includes.with_counters
+      @ancestors   = @stream_entry.activity.ancestors
+      @descendants = @stream_entry.activity.descendants
 
       if user_signed_in?
         status_ids  = [@stream_entry.activity_id] + @ancestors.map { |s| s.id } + @descendants.map { |s| s.id }

app/models/status.rb

@@ -61,11 +61,17 @@ class Status < ApplicationRecord
   end
 
   def ancestors
-    Status.where(id: Status.find_by_sql(['WITH RECURSIVE search_tree(id, in_reply_to_id, path) AS (SELECT id, in_reply_to_id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, statuses.in_reply_to_id, path || statuses.id FROM search_tree JOIN statuses ON statuses.id = search_tree.in_reply_to_id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path DESC', self.id]) - [self])
+    ids      = (Status.find_by_sql(['WITH RECURSIVE search_tree(id, in_reply_to_id, path) AS (SELECT id, in_reply_to_id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, statuses.in_reply_to_id, path || statuses.id FROM search_tree JOIN statuses ON statuses.id = search_tree.in_reply_to_id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path DESC', self.id]) - [self]).pluck(:id)
+    statuses = Status.where(id: ids).with_counters.with_includes.group_by(&:id)
+
+    ids.map { |id| statuses[id].first }
   end
 
   def descendants
-    Status.where(id: Status.find_by_sql(['WITH RECURSIVE search_tree(id, path) AS (SELECT id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, path || statuses.id FROM search_tree JOIN statuses ON statuses.in_reply_to_id = search_tree.id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path', self.id]) - [self])
+    ids      = (Status.find_by_sql(['WITH RECURSIVE search_tree(id, path) AS (SELECT id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, path || statuses.id FROM search_tree JOIN statuses ON statuses.in_reply_to_id = search_tree.id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path', self.id]) - [self]).pluck(:id)
+    statuses = Status.where(id: ids).with_counters.with_includes.group_by(&:id)
+
+    ids.map { |id| statuses[id].first }
   end
 
   def self.as_home_timeline(account)