新たにカラムを追加する際、
1 2 3 | StandardError: An error has occurred, this and all later migrations canceled: undefined method `shop_id' for .... |
migration ファイルの中で以下のようにインスタンスを作っていたことが原因でした
1 | Something.create() |
参考にした記事
[db:migrate] error on migration – undefined method file_changed?' #195
Rake aborted. Migrate aborted. Standard Error. Undefined Method. So what exactly causes this?
rake db:migrate fails when using this gem with mysql #31
Problems with migration, “undefined method ext’” in Active Record?
