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Ruby ActiveRecord Basics Migrations and Relationships Single Table Inheritance

Error message for c.time_entries

At 20:48 he runs:

c.time_entries

to which I get the following string in response:

irb(main):026:0> c.time_entries ActiveRecord::StatementInvalid: Mysql2::Error: Table 'biller_development.account_entries' doesn't exist: SHOW FULL FIELDS FROM account_entries from /var/lib/gems/2.2.0/gems/mysql2-0.4.3/lib/mysql2/client.rb:107:in _query' from /var/lib/gems/2.2.0/gems/mysql2-0.4.3/lib/mysql2/client.rb:107:inblock in query' from /var/lib/gems/2.2.0/gems/mysql2-0.4.3/lib/mysql2/client.rb:106:in handle_interrupt' from /var/lib/gems/2.2.0/gems/mysql2-0.4.3/lib/mysql2/client.rb:106:inquery' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:305:in block in execute' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_adapter.rb:472:inblock in log' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/notifications/instrumenter.rb:20:in instrument' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_adapter.rb:466:inlog' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:305:in execute' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/mysql2_adapter.rb:231:inexecute' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:312:in execute_and_free' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/abstract_mysql_adapter.rb:457:incolumns' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/schema_cache.rb:43:in columns' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/attributes.rb:93:incolumns' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/attributes.rb:98:in columns_hash' from /var/lib/gems/2.2.0/gems/activerecord-4.2.5.1/lib/active_record/inheritance.rb:73:indescends_from_active_record?' ... 14 levels... from /var/lib/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/console.rb:9:in start' from /var/lib/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:68:inconsole' from /var/lib/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands/commands_tasks.rb:39:in run_command!' from /var/lib/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/commands.rb:17:in<top (required)>' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in require' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:inblock in require' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in load_dependency' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:inrequire' from /home/robert/biller/bin/rails:9:in <top (required)>' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:inload' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in block in load' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:inload_dependency' from /var/lib/gems/2.2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in load' from /usr/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:inrequire' from /usr/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in require' from -e:1:in<main>'irb(main):027:0>

None of it makes any sense to me...

1 Answer

Andrii Moisol
Andrii Moisol
17,252 Points

Just type: rake db:migrate.