See lengths of all varchars for tables in the application

gistfile1.rb

#You can use this from a rails console by creating this
#in a directory, starting up rails c, and then doing a 
#'load fields.rb'. Then just call Fields.show_report
class Fields
  def self.show_report
    Rails.application.eager_load!
    ActiveRecord::Base.descendants.each do |model|
        table_name = model.table_name
        puts "Varchar length report for #{table_name}"
        puts "-------------------------------------------------"
        puts ""
        begin
        model.columns.each do |col|
            puts "  #{col.name}: #{col.limit}" if col.type == :string
        end
        rescue
            puts "Table not valid"
        end
        puts ""
        puts ""
    end
    puts "-------------------------------------------------"
    puts "END OF REPORT"
  end
end