Ruby on Rails

> i know data type changes to the corresponding ruby one when reading
> data from database,but wonder how it changes when writing data to
> database.
> for example,if there is a new answer (
> answer=Answer.new(params[:answer]) ),it will be validated,and saved to
> database,but how does the attribute value's datatype change during this
> process?it is always string type until be saved to database?
>
> i use rails3 active_model's new feature,really want to know the above?
> can you help me?

Dig through the source... I would imagine it would be in active record (or whatever ORM you use) not in active model... look for "type cast"...

-phiilp

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