What is the easiest way to duplicate an activerecord record?

Question

I want to make a copy of an ActiveRecord object, changing a single field in the process (in addition to the id). What is the simplest way to accomplish this? I realize I could create a new record, and then iterate over each of the fields copying the data field-by-field - but I figured there must be an easier way to do this. Perhaps something like this: new_record = Record.copy(:id) JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

To get a copy, use the dup (or clone for < rails 3.1+) method: #rails >= 3.1 new_record = old_record.dup # rails < 3.1 new_record = old_record.clone Then you can change whichever fields you want. ActiveRecord overrides the built-in Object#clone to give you a new (not saved to the DB) record with an unassigned ID. Note that it does not copy associations, so you'll have to do this manually if you need to. Rails 3.1 clone is a shallow copy, use dup instead...