Change created_at and deleted_at to transaction_from and transaction_to

[osyo-manga]

Summary

Change name created_at and deleted_at columns to transaction_from and transaction_to.

Before

ActiveRecord::Schema.define(version: 1) do
  create_table :employees, force: true do |t|
    t.string :emp_code
    t.string :name

    # Require BTDM columns
    t.integer :bitemporal_id
    t.datetime :valid_from
    t.datetime :valid_to
    t.datetime :created_at   # optional
    t.datetime :deleted_at
  end
end

After

ActiveRecord::Schema.define(version: 1) do
  create_table :employees, force: true do |t|
    t.string :emp_code
    t.string :name

    # Require BTDM columns
    t.integer :bitemporal_id
    t.datetime :valid_from
    t.datetime :valid_to
    t.datetime :transaction_from   # require
    t.datetime :transaction_to
  end
end

NOTE

created_at deleted_at is still supported.
However, it will not be supported in the future.

[wata727]

In the case (created_at was changed), it seems valid_from and transaction_from is not the same values.
Is this valid records? Does this cause problems?

[osyo-manga]

yes, valid_from and transaction_from are not the same because they have different information.
And they are the same by default.

company = Company.create
pp company.created_at.iso8601(10)
# => "2020-11-04T08:18:03.1952580000Z"
pp company.transaction_from.iso8601(10)
# => "2020-11-04T08:18:03.1952580000Z"
pp company.valid_from.iso8601(10)
# => "2020-11-04T08:18:03.1952580000Z"

[wata727]

🤗

[wata727]

👍

[wakasa51]

LGTM！

[osyo-manga]

@wata727 @wakasa51 Thanks!