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Ruby Build a Todo List Application with Rails 4 Build a Todo List Application with Rails 4 Generate a Scaffold

Posted by Ann Novakowski
Ann Novakowski
3,004 Points

I keep receiving errors every time I try to run "rake db:migrate". How do I fix this??

annies-laptop:odot annharris$ bin/rake db:migrate Running via Spring preloader in process 81698 [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. [DEPRECATION] last_comment is deprecated. Please use last_description instead. == 20160503211616 CreateTodoLists: migrating ================================== -- create_table(:todo_lists) rake aborted! StandardError: An error has occurred, this and all later migrations canceled:

undefined method stringdescription' for #<ActiveRecord::ConnectionAdapters::TableDefinition:0x007fe7f1abe498> /Users/annharris/Desktop/treehouse/odot/db/migrate/20160503211616_create_todo_lists.rb:4:inblock in change' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/schema_statements.rb:202:in create_table' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:665:inblock in method_missing' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:634:in block in say_with_time' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:634:insay_with_time' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:654:in method_missing' /Users/annharris/Desktop/treehouse/odot/db/migrate/20160503211616_create_todo_lists.rb:3:inchange' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:608:in exec_migration' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:592:inblock (2 levels) in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:591:in block in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:292:inwith_connection' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:590:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:768:inmigrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:998:in block in execute_migration_in_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:1044:inblock in ddl_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in block in transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/transaction.rb:184:inwithin_new_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/transactions.rb:220:intransaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:1044:in ddl_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:997:inexecute_migration_in_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:959:in block in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:955:ineach' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:955:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:823:inup' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:801:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/tasks/database_tasks.rb:137:inmigrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/railties/databases.rake:44:in block (2 levels) in <top (required)>' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:inload' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in block in load' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:inload_dependency' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in load' -e:1:in<main>' NoMethodError: undefined method stringdescription' for #<ActiveRecord::ConnectionAdapters::TableDefinition:0x007fe7f1abe498> /Users/annharris/Desktop/treehouse/odot/db/migrate/20160503211616_create_todo_lists.rb:4:inblock in change' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/schema_statements.rb:202:in create_table' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:665:inblock in method_missing' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:634:in block in say_with_time' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:634:insay_with_time' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:654:in method_missing' /Users/annharris/Desktop/treehouse/odot/db/migrate/20160503211616_create_todo_lists.rb:3:inchange' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:608:in exec_migration' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:592:inblock (2 levels) in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:591:in block in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:292:inwith_connection' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:590:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:768:inmigrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:998:in block in execute_migration_in_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:1044:inblock in ddl_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in block in transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/transaction.rb:184:inwithin_new_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/transactions.rb:220:intransaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:1044:in ddl_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:997:inexecute_migration_in_transaction' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:959:in block in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:955:ineach' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:955:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:823:inup' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/migration.rb:801:in migrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/tasks/database_tasks.rb:137:inmigrate' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activerecord-4.2.5/lib/active_record/railties/databases.rake:44:in block (2 levels) in <top (required)>' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:inload' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in block in load' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:inload_dependency' /Users/annharris/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in load' -e:1:in<main>' Tasks: TOP => db:migrate (See full trace by running task with --trace)

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Can you post the migration's script? I appears there's an error in it.

Ann Novakowski
Ann Novakowski
3,004 Points

Seth Kroger - How do I do that? I'm a beginner trying to follow along with the videos.

2 Answers

Daniel Cox
Daniel Cox
15,966 Points
Daniel Cox
Daniel Cox
15,966 Points

Hey @annhnova,

In the db/migrate folder ... there is a file called 20160503211616_create_todo_lists.rb.

Open that file and you have a error around line 4.

Linda Joy
Linda Joy
5,415 Points
Linda Joy
Linda Joy
5,415 Points

I have this problem as well -- how can you tell what the error is or how to fix it?

Daniel Cox
Daniel Cox
15,966 Points
Daniel Cox
Daniel Cox
15,966 Points

Are you still having the problem?