Remove old YAML format for versions data

We now use JSON to store all versions data, and have converted
the existing YAML into JSON. Remove the YAML copy of the old data.

Signed-off-by: David A. Wheeler <[email protected]>

db/migrate/20241219131058_remove_old_yaml_object_from_versions.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+# Remove old_yaml_object. We now store version information in the
+# column "object" in JSON format and we have converted all the data in
+# YAML format to the JSON format. We *could* retain the YAML copy,
+# but it takes up a lot of space for no gain.
+
+class RemoveOldYamlObjectFromVersions < ActiveRecord::Migration[7.1]
+  def change
+    remove_column :versions, :old_yaml_object, :text
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_12_18_182207) do
+ActiveRecord::Schema[7.1].define(version: 2024_12_19_131058) do
   create_schema "heroku_ext"
 
   # These are extensions that must be enabled in order to support this database
@@ -35,8 +35,8 @@
 
   create_table "pg_search_documents", id: :serial, force: :cascade do |t|
     t.text "content"
-    t.string "searchable_type"
     t.integer "searchable_id"
+    t.string "searchable_type"
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
     t.index ["searchable_type", "searchable_id"], name: "index_pg_search_documents_on_searchable_type_and_searchable_id"
@@ -437,7 +437,6 @@
     t.integer "item_id", null: false
     t.string "event", null: false
     t.string "whodunnit"
-    t.text "old_yaml_object"
     t.datetime "created_at", precision: nil
     t.jsonb "object"
     t.index ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id"