Get list of all indexes in rails console.

list_indexes_in_rails_console.rb

# rails console

ActiveRecord::Base.connection.tables.each do |table|
  indexes = ActiveRecord::Base.connection.indexes(table)
  if indexes.length > 0
    puts "====>  #{table} <===="
    indexes.each do |index|
      puts "----> #{index.name}"
    end
    puts "====>  #{table} <===="
    2.times{ puts ''}
  end
end