discourse/db/migrate/20170717084947_create_user_...

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# frozen_string_literal: true
require 'migration/column_dropper'
class CreateUserEmails < ActiveRecord::Migration[4.2]
def up
create_table :user_emails do |t|
t.integer :user_id, null: false
t.string :email, limit: 513, null: false
t.boolean :primary, default: false, null: false
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t.timestamps null: false
end
add_index :user_emails, :user_id
add_index :user_emails, [:user_id, :primary], unique: true
execute "CREATE UNIQUE INDEX index_user_emails_on_email ON user_emails (lower(email));"
execute <<~SQL
INSERT INTO user_emails (
id,
user_id,
email,
"primary",
created_at,
updated_at
) SELECT
id,
id,
email,
'TRUE',
created_at,
updated_at
FROM users
SQL
change_column_null :users, :email, true
Migration::ColumnDropper.mark_readonly(:users, :email)
end
def down
raise ActiveRecord::IrreversibleMigration
end
end