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ruby-on-railsactiverecordrefactoringsplat

How use an array of strings to create multiple ActiveRecord objects at once?

I have an array of strings:

days = ["Monday", "Tuesday", "Wednesday"]

I'd like to create a Day in the database named after each of these:

days.each do |day|
  Day.create(name: day)
end

This isn't so cute, however. In the past, I have been able to clean up lists of attributes by passing them into attr_accessor with a splat:

attr_accessor *ATTRIBUTES

I am looking to be able to do something like this:

Day.create(name: *days)

Is a similar interface available for ActiveRecord?

Solution

  • You can create them in one go:

    Day.create(days.map { |day| {name: day} })

    create docs mentioned:

    Creates an object (or multiple objects) and saves it to the database, if validations pass. The attributes parameter can be either a Hash or an Array of Hashes.