Add: #545 NGワード指定で実際に除外された投稿のログ (#561)

db/migrate/20240216042730_create_ngword_histories.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class CreateNgwordHistories < ActiveRecord::Migration[7.1]
+  def change
+    create_table :ngword_histories do |t|
+      t.string :uri, null: false
+      t.integer :target_type, null: false
+      t.integer :reason, null: false
+      t.string :text, null: false
+      t.string :keyword, null: false
+
+      t.timestamps
+    end
+
+    add_index :ngword_histories, [:uri, :keyword, :created_at], unique: false
+  end
+end