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class CreateActivitiesTable < ActiveRecord::Migration
def change
create_table :activities do |t|
t.integer :subject_id, null: false
t.string :subject_type, null: false
t.integer :user_id, null: false
t.timestamps null: false
end
add_index :activities, :subject_id
add_index :activities, :subject_type
add_index :activities, :user_id
end
end
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