在rake db：create期间无法将fixnum转换为字符串
刚刚使用rails 3.0创建了一个新的博客应用
我的模型很简单：
class Post < ActiveRecord::Base has_many :comments end class Comment < ActiveRecord::Base belongs_to :post end 我使用了命令：rails generate scaffold post title：string body：text etc.
创建这些文件。
现在我想使用以下方法生成数据库：
rake db：create
我收到了错误：
rake aborted! can't convert Fixnum into String
任何想法可以是什么问题？
我正在学习本教程： http ： //sixrevisions.com/web-development/how-to-create-a-blog-from-scratch-using-ruby-on-rails/
这是跟踪：
** Invoke db:create (first_time) ** Invoke db:load_config (first_time) ** Invoke rails_env (first_time) ** Execute rails_env ** Execute db:load_config ** Execute db:create rake aborted! can't convert Fixnum into String /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/mysql2/client.rb:36:in `connect' /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/mysql2/client.rb:36:in `initialize' /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/active_record/connection_adapters/mysql2_adapter.rb:14:in `new' /Library/Ruby/Gems/1.8/gems/mysql2-0.2.4/lib/active_record/connection_adapters/mysql2_adapter.rb:14:in `mysql2_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `send' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `new_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:238:in `checkout_new_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:194:in `checkout' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:190:in `loop' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:190:in `checkout' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:189:in `checkout' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:96:in `connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:318:in `retrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_specification.rb:97:in `retrieve_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/connection_specification.rb:89:in `connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/railties/databases.rake:68:in `create_database' /Library/Ruby/Gems/1.8/gems/activerecord-3.0.0/lib/active_record/railties/databases.rake:33 /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `call' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in `execute' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in `invoke_with_call_chain' /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in `invoke_with_call_chain' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in `invoke' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:in `invoke_task' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run' /Library/Ruby/Gems/1.8/gems/rake-0.8.7/bin/rake:31 /usr/bin/rake:19:in `load' /usr/bin/rake:19
database.yaml：
# MySQL. Versions 4.1 and 5.0 are recommended. # # Install the MySQL driver: # gem install mysql2 # # And be sure to use new-style password hashing: # http://dev.mysql.com/doc/refman/5.0/en/old-client.html development: adapter: mysql2 encoding: utf8 reconnect: false database: myblog_development pool: 5 username: root password: 123 socket: /tmp/mysql.sock # Warning: The database defined as "test" will be erased and # re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test: adapter: mysql2 encoding: utf8 reconnect: false database: myblog_test pool: 5 username: root password: 123 socket: /tmp/mysql.sock production: adapter: mysql2 encoding: utf8 reconnect: false database: myblog_production pool: 5 username: root password: 123 socket: /tmp/mysql.sock
迁移：
class CreatePosts < ActiveRecord::Migration def self.up create_table :posts do |t| t.string :title t.text :body t.timestamps end end def self.down drop_table :posts end end
下次迁移：
class CreateComments < ActiveRecord::Migration def self.up create_table :comments do |t| t.string :name t.text :body t.references :post t.timestamps end end def self.down drop_table :comments end end
YAML解析器必须猜测database.yml文件中每个值的数据类型，而没有任何其他上下文信息。
因此，它可能会将您的password值123视为整数。
尝试强制字符串解释：
password: "123"