#99

2026-03-29 21:27:59 +09:00
parent 2adff3966a
commit c28326b941
10 changed files with 274 additions and 30 deletions
@@ -0,0 +1,34 @@
+class CreateMaterials < ActiveRecord::Migration[8.0]
+  def change
+    create_table :materials do |t|
+      t.string :url
+      t.references :parent, index: true, foreign_key: { to_table: :materials }
+      t.references :tag, index: true, foreign_key: true
+      t.references :created_by_user, foreign_key: { to_table: :users }
+      t.references :updated_by_user, foreign_key: { to_table: :users }
+      t.timestamps
+      t.datetime :discarded_at, index: true
+      t.virtual :active_url, type: :string,
+                             as: 'IF(discarded_at IS NULL, url, NULL)',
+                             stored: false
+
+      t.index :active_url, unique: true
+    end
+
+    create_table :material_versions do |t|
+      t.references :material, null: false, foreign_key: true
+      t.integer :version_no, null: false
+      t.string :url, index: true
+      t.references :parent, index: true, foreign_key: { to_table: :materials }
+      t.references :tag, index: true, foreign_key: true
+      t.references :created_by_user, foreign_key: { to_table: :users }
+      t.references :updated_by_user, foreign_key: { to_table: :users }
+      t.timestamps
+      t.datetime :discarded_at, index: true
+
+      t.index [:material_id, :version_no],
+              unique: true,
+              name: 'index_material_versions_on_material_id_and_version_no'
+    end
+  end
+end