핫픽스: 배송 관련 필드 타입 수정 (#50)

* shipping_addresses 테이블 문자셋을 utf8mb4 로 변경

* ship_info.user_memo 필드 타입을 Text 로 변경

Author: yhk1038

db/migrate/ship_info/20200603032826_change_text_for_user_memo.rb

@@ -0,0 +1,5 @@
+class ChangeTextForUserMemo < ActiveRecord::Migration[6.0]
+  def change
+    change_column :ship_infos, :user_memo, :text
+  end
+end

db/migrate/shipping_address/20200603031533_change_utf8mb4_to_shipping_addresses.rb

@@ -0,0 +1,11 @@
+class ChangeUtf8mb4ToShippingAddresses < ActiveRecord::Migration[6.0]
+  def up
+    execute "ALTER TABLE shipping_addresses CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci"
+    change_column :shipping_addresses, :loc_detail, :text
+  end
+
+  def down
+    execute "ALTER TABLE shipping_addresses CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci"
+    change_column :shipping_addresses, :loc_detail, :text
+  end
+end