gistfile1.txt

class Remote < Application
  def download
    ok = true
    [<a bunch of model names...>].each do |model|
    
      # Get the remote records for the model
      records = []
      repository(:remote) {records = model.all}
      
      # Copy the records to the default repository
      records.each do |record|
        # check whether the record is already in the default repository
        if record.id && copy = model.get(record.id)
          ok = false unless copy.update(record.attributes)
        else
          unless !record.id && copy = model.first(record.attributes)
            # note that you can't create a new record directly with the 'record' attributes, as create will
            # try to insert a sequential id that may clash with one that's already copied. You have to make a new 
            # record in memory, replace all the attributes and then save it.
            copy = model.new
            copy.attributes = record.attributes
            ok = false unless copy.save
          end
        end
      end
    end
    message[:result] = ok ? "Data downloaded ok" : "We had a problem"
    render
  end
end