2021/3/31 -概要. Railsでは標準でviewテーブルをmigrationで管理することができない。 そこで、scenicというgemを使って実現する。
2022/12/26 -マイグレーションファイルに生SQLを書いてビューを作ることもできるのですが、ビューをmigrationで管理する場合、gemのscenicが便利なのでこちらを使用 ...
Migrations are a convenient way to evolve your database schema over time in a reproducible way. They use a Ruby DSL so that you don't have to write SQL by hand.
2016/11/15 -I have a view named my_view which I created using the following migration. class CreateMyView < ActiveRecord::Migration def change execute <<-SQL drop view if ...
Scenic adds methods to ActiveRecord::Migration to create and manage database views in Rails. Using Scenic, you can bring the power of SQL views to your ...
マイグレーション（migration）はActive Recordの機能の1つであり、データベーススキーマが長期にわたって進化を安定して繰り返せるようにするための仕組みです。
A migration is a subclass of ActiveRecord::Migration that implements two methods: up (perform the required transformations) and down (revert them).
2023/8/3 -After providing SQL query of our view we can run migration. After that, we are ready to use the newly created database view. Let's say that we ...
2020/1/16 -Just like we saw with our regular view, materialized views begin the same way, by executing a command to generate a new view migration: rails g ...
2022/9/20 -How to add SQL view into the Rails app · write a migration with an SQL definition · create a model and "associate" it with your view · use it like ...