Migrate old php site database to rails with legacy script and mantain old ids

Question

I'm trying to migrate my old php website database (mysql) to a rails 3 app (mysql) by a rake legacy script like this:

How to migrate legacy PHP mysql data to new Rails data model?

but i have a problem:
- old table id's were lost because if i have a table with
id | field
1 | field_value
2 | field_value 2
4 | field_value 4

Using Model.create(....) it becomes:

id | field
1 | field_value
2 | field_value 2
3 | field_value 4

how can i migrate using Model.create(....) and mantaining old id's?

Answer 1

Have a look here: Overriding id on create in ActiveRecord

Also, consider just dumping and importing the whole database. You can make rails specific modifications to the data later with migrations.