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ruby-on-railsrubyactiverecorddynamic-attributes

How to set a dynamic attribute

Is there a way to set col as dynamic or convert it in some way to a valid attribute? It is currently throwing the error: undefined method `col=' for #...

def copy_stock_data_from_sandbox(cntrlr)
  source_table = cntrlr.singularize.classify.constantize
  dest_table = source_table.new
  source_table.column_names.each do |col|
    dest_table.col = xyz    # <------ This is the line in question
  end
  dest_table.save
end

Also, not sure if the title is accurate, please suggest if 'dynamic attribute' is the wrong term for this situation. Thanks

Solution

  • I believe that you're looking for the following:

    dest_table.send(:"#{col}=", xyz)