Migrate to add content columns in Description and Example models

* Description#content_zh
* Description#content_en
* Description#content_fr

* Example#content_amis
* Example#content_en
* Example#content_fr

app/models/description.rb

@@ -13,6 +13,9 @@
 #  glossary_serial  :string(10)
 #  glossary_level   :string(10)
 #  customized_text  :string(500)
+#  content_zh       :string
+#  content_en       :string
+#  content_fr       :string
 #
 
 class Description < ApplicationRecord

app/models/example.rb

@@ -10,6 +10,9 @@
 #  content_zh     :string
 #  created_at     :datetime         not null
 #  updated_at     :datetime         not null
+#  content_amis   :string
+#  content_en     :string
+#  content_fr     :string
 #
 
 class Example < ApplicationRecord

db/migrate/20240930145937_add_content_amis_en_fr_to_example_and_description.rb

@@ -0,0 +1,15 @@
+class AddContentAmisEnFrToExampleAndDescription < ActiveRecord::Migration[7.2]
+  def change
+    change_table :descriptions, bulk: true do |t|
+      t.string :content_zh
+      t.string :content_en
+      t.string :content_fr
+    end
+
+    change_table :examples, bulk: true do |t|
+      t.string :content_amis
+      t.string :content_en
+      t.string :content_fr
+    end
+  end
+end