backend/app/controllers/wiki_pages_controller.rb

@@ -154,8 +154,7 @@ class WikiPagesController < ApplicationController
   def render_wiki_page_or_404 page
     return head :not_found unless page
 
-    if params[:version].present?
-      rev = page.wiki_revisions.find_by(id: params[:version])
+    rev = find_revision(page)
     return head :not_found unless rev
 
     if rev.redirect?
@@ -168,29 +167,18 @@ class WikiPagesController < ApplicationController
     revision_id = rev.id
     pred = page.pred_revision_id(revision_id)
     succ = page.succ_revision_id(revision_id)
+    updated_at = rev.created_at
 
-      return render json: page.as_json(methods: [:title])
-                              .merge(body:, revision_id:, pred:, succ:)
-    end
-
-    rev = page.current_revision
-    unless rev
-      return render json: page.as_json(methods: [:title])
-                              .merge(body: nil, revision_id: nil, pred: nil, succ: nil)
+    render json: page.as_json(methods: [:title])
+                     .merge(body:, revision_id:, pred:, succ:, updated_at:)
   end
 
-    if rev.redirect?
-      return (
-          redirect_to wiki_page_by_title_path(title: rev.redirect_page.title),
-                      status: :moved_permanently)
+  def find_revision page
+    if params[:version].present?
+      page.wiki_revisions.find_by(id: params[:version])
+    else
+      page.current_revision
     end
-
-    body = rev.body
-    revision_id = rev.id
-    pred = page.pred_revision_id(revision_id)
-    succ = page.succ_revision_id(revision_id)
-
-    render json: page.as_json(methods: [:title]).merge(body:, revision_id:, pred:, succ:)
   end
 
   def render_wiki_conflict err