ActiveRecord在Rails 3中生成SQL

Question

I'm working on a project which requires talking to two different databases: a MySQL one for persistent data and an experimental in-memory database for real-time data.

It would make my life a bit easier if there was a way to access and use the SQL Query generated by the ActiveRecord finders.

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I know there have been other questions along these lines but the answers they had seemed to suggest logging the SQL to STDOUT and were not for Rails 3

Answer 1

Model.all executes the query and you are trying to call to_sql on an Array.

Do this

Model.scoped.to_sql