establish_connection

irb.rb

[4] pry(main)> User.connected?
=> false
[5] pry(main)> User
=> User (call 'User.connection' to establish a connection)
[6] pry(main)> User.connection
   (0.6ms)  SET NAMES utf8mb4 COLLATE utf8mb4_bin,  @@SESSION.sql_mode = CONCAT(CONCAT(@@sql_mode, ',STRICT_ALL_TABLES'), ',NO_AUTO_VALUE_ON_ZERO'),  @@SESSION.sql_auto_is_null = 0, @@SESSION.wait_timeout = 2147483
=> #<ActiveRecord::ConnectionAdapters::Mysql2Adapter:0x00007fcf4c63beb0
 @config=
  {:adapter=>"mysql2",
   :encoding=>"utf8mb4",
   :charset=>"utf8mb4",
   :collation=>"utf8mb4_bin",
   :pool=>5,
   :username=>"root",
   :password=>nil,
   :host=>"127.0.0.1",
   :database=>"crowd_agent_development",
   :port=>3306,
   :flags=>2},
 @connection=
  #<Mysql2::Client:0x00007fcf4c640410
   @current_query_options=
    {:as=>:array,
     :async=>false,
     :cast_booleans=>false,
     :symbolize_keys=>false,
     :database_timezone=>:utc,
     :application_timezone=>nil,
     :cache_rows=>true,
     :connect_flags=>2148540933,
     :cast=>true,
     :default_file=>nil,
     :default_group=>nil,
     :adapter=>"mysql2",
     :encoding=>"utf8mb4",
     :charset=>"utf8mb4",
     :collation=>"utf8mb4_bin",
     :pool=>5,
     :username=>"root",
     :password=>nil,
     :host=>"127.0.0.1",
     :database=>"crowd_agent_development",
     :port=>3306,
     :flags=>2},
   @query_options=
    {:as=>:array,
     :async=>false,
[7] pry(main)> User.connected?
=> true