#354

backend/app/controllers/post_versions_controller.rb

@@ -27,9 +27,8 @@ class PostVersionsController < ApplicationController
                 'prev.original_created_before AS prev_original_created_before')
     q = q.where('post_versions.post_id = ?', post_id) if post_id
     if tag_id
-      q = q.where(("JSON_CONTAINS(post_versions.tags_json, JSON_OBJECT('id', :tag_id)) " +
-                   "OR JSON_CONTAINS(prev.tags_json, JSON_OBJECT('id', :tag_id))"),
-                  tag_id:)
+      q = q.where("JSON_CONTAINS(post_versions.tags_json, JSON_OBJECT('id', #{ tag_id })) " +
+                  "OR JSON_CONTAINS(prev.tags_json, JSON_OBJECT('id', #{ tag_id }))")
     end
 
     count = q.except(:select, :order, :limit, :offset).count