ruby - undefined method for calling methode in class -


i try call methode check_table_exists check table. methode on module, , dont understand why error .

i know @connexion mysql2::client instance, doesn't include module sgbd. dont see how include methode ?

./yamlreadfile.rb:44:in `mysql_connection': undefined method `check_table_exists' #<mysql2::client:0x000000033a7750> (nomethoderror)  $load_path << '.'  require 'yaml' require 'rubygems' require 'mysql2' require 'creatdatabase'  #binding.pry class streammysql  include sgbd  def mysql_connection(conf)         @connexion = mysql2::client.new(:host => conf['ost'], :username => conf['user'], :password => conf['password'], :table => conf['table'], :port => conf['port'])         if @connexion           puts check_table_exists          @connexion.check_table_exists           puts "connexion etablie"          else          puts "error connexion"          end           rescue mysql2::error => e           puts e.errno           puts e.error         @connexion.close end   def read_config_file         config = yaml::load_file(file.join(__dir__, 'config.yml'))         conf   = config['database']         mysql_connection(conf)  end   end

my module file mehode check_table_exists

module sgbd  # class modulecreatedatabase    def  create_database    end    def check_table_exists       query=("show tables;")   end  end

it’s unclear why want include module in foreign class, it’s doable:

mysql2::client.include sgbd

the line above should put e. g. before class streammysql declaration.


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