#111

backend/app/controllers/wiki_pages_controller.rb

@@ -154,31 +154,8 @@ 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])
-      return head :not_found unless rev
-
-      if rev.redirect?
-        return (
-            redirect_to wiki_page_by_title_path(title: rev.redirect_page.title),
-                        status: :moved_permanently)
-      end
-
-      body = rev.body
-      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:, updated_at:)
-    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)
-    end
+    rev = find_revision(page)
+    return head :not_found unless rev
 
     if rev.redirect?
       return (
@@ -196,6 +173,14 @@ class WikiPagesController < ApplicationController
                      .merge(body:, revision_id:, pred:, succ:, updated_at:)
   end
 
+  def find_revision page
+    if params[:version].present?
+      page.wiki_revisions.find_by(id: params[:version])
+    else
+      page.current_revision
+    end
+  end
+
   def render_wiki_conflict err
     render json: { error: 'conflict', message: err.message }, status: :conflict
   end