Validations: Default context based on persistence - #469
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Forward the `:context` option from `Base#save` and `Base#save!` to the underlying `Validations#valid?` call. The argument delegation changes to this method signature are necessary for the sake of the [ActiveResource::Validations#save_with_validation][] method. The `ActiveResource::Validations` module aliases the previously defined `#save` method to a `#save_without_validation` method, and then defines its own `#save_with_validation` method which accepts arguments (previously the `:validate` option, now the `:validate` *and* `:context` option). This commit also includes test coverage for directly calling `Validations#valid?` with a `context` value, since that behavior wasn't covered by tests elsewhere in the suite. [ActiveResource::Validations#save_with_validation]: https://github.com/rails/activeresource/blob/v6.2.0/lib/active_resource/validations.rb#L111
This commit proposed that Active Resource follow the same pattern as [Active Record Validations][], namely that an instance's default validation context will be `:create` when the record **is not yet** persisted and `:update` when the record **is** persisted. [Active Record Validations]: https://api.rubyonrails.org/v8.1/classes/ActiveRecord/Validations.html#method-i-valid-3F
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Depends on #468
This commit proposed that Active Resource follow the same pattern as
Active Record Validations, namely that an instance's default
validation context will be
:createwhen the record is not yetpersisted and
:updatewhen the record is persisted.