我正在尝试使用一个正在运行的应用程序来运行在流浪汉上运行的Linux 10.04
我安装了所有相关的宝石，安装了postgresql 9.1.9，当我试图运行时
rake db:migrate我正在
rake aborted!
PG::Error: ERROR: relation "messages" does not exist
LINE 5: WHERE a.attrelid = '"messages"'::regclass
^
: SELECT a.attname, format_type(a.atttypid, a.atttypmod),
pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
FROM pg_attribute a LEFT JOIN pg_attrdef d
ON a.attrelid = d.adrelid AND a.attnum = d.adnum
WHERE a.attrelid = '"messages"'::regclass
AND a.attnum > 0 AND NOT a.attisdropped
ORDER BY a.attnum
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1161:in `exec'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1161:in `exec_no_cache'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:660:in `block in exec_query'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/rack-mini-profiler-0.1.26/Ruby/lib/patches/sql_patches.rb:246:in `log_with_miniprofiler'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/active_record.rb:36:in `block in log_with_newrelic_instrumentation'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/method_tracer.rb:235:in `trace_execution_scoped'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/active_record.rb:33:in `log_with_newrelic_instrumentation'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:659:in `exec_query'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:1286:in `column_definitions'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/postgresql_adapter.rb:855:in `columns'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/connection_adapters/schema_cache.rb:12:in `block in initialize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/model_schema.rb:228:in `yield'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/model_schema.rb:228:in `default'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/model_schema.rb:228:in `columns'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/model_schema.rb:237:in `columns_hash'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/inheritance.rb:19:in `descends_from_active_record?'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/inheritance.rb:25:in `finder_needs_type_condition?'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/base.rb:455:in `relation'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/scoping/named.rb:37:in `scoped'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activerecord-3.2.13/lib/active_record/querying.rb:9:in `where'
/home/vagrant/myapp/app/models/message.rb:29:in `<class:Message>'
/home/vagrant/myapp/app/models/message.rb:25:in `<top (required)>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:469:in `load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:469:in `block in load_file'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:639:in `new_constants_in'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:468:in `load_file'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:353:in `require_or_load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:502:in `load_missing_constant'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:192:in `block in const_missing'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in `const_missing'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:230:in `block in constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in `constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/core_ext/string/inflections.rb:54:in `constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/acts-as-messageable-0.4.8/lib/acts-as-messageable/model.rb:34:in `acts_as_messageable'
/home/vagrant/myapp/app/models/user.rb:123:in `<class:User>'
/home/vagrant/myapp/app/models/user.rb:45:in `<top (required)>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:469:in `load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:469:in `block in load_file'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:639:in `new_constants_in'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:468:in `load_file'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:353:in `require_or_load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:502:in `load_missing_constant'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:192:in `block in const_missing'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:190:in `const_missing'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:230:in `block in constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/inflector/methods.rb:229:in `constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:554:in `get'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:588:in `constantize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise.rb:272:in `get'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/mapping.rb:77:in `to'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/mapping.rb:72:in `modules'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/mapping.rb:89:in `routes'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/mapping.rb:156:in `default_used_route'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/mapping.rb:66:in `initialize'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise.rb:306:in `new'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise.rb:306:in `add_mapping'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/rails/routes.rb:208:in `block in devise_for'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/rails/routes.rb:207:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/devise-2.2.4/lib/devise/rails/routes.rb:207:in `devise_for'
/home/vagrant/myapp/config/routes.rb:27:in `block in <top (required)>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/actionpack-3.2.13/lib/action_dispatch/routing/route_set.rb:289:in `instance_exec'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/actionpack-3.2.13/lib/action_dispatch/routing/route_set.rb:289:in `eval_block'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/actionpack-3.2.13/lib/action_dispatch/routing/route_set.rb:267:in `draw'
/home/vagrant/myapp/config/routes.rb:1:in `<top (required)>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `block in load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:245:in `load'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:40:in `block in load_paths'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:40:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:40:in `load_paths'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:16:in `reload!'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:26:in `block in updater'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/file_update_checker.rb:78:in `call'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/file_update_checker.rb:78:in `execute'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:27:in `updater'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/routes_reloader.rb:7:in `execute_if_updated'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application/finisher.rb:66:in `block in <module:Finisher>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `instance_exec'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/initializable.rb:30:in `run'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/initializable.rb:55:in `block in run_initializers'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/initializable.rb:54:in `run_initializers'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application.rb:136:in `initialize!'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/railtie/configurable.rb:30:in `method_missing'
/home/vagrant/myapp/config/environment.rb:5:in `<top (required)>'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application.rb:103:in `require_environment!'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/gems/railties-3.2.13/lib/rails/application.rb:297:in `block (2 levels) in initialize_tasks'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:246:in `call'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:246:in `block in execute'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:241:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:241:in `execute'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:184:in `block in invoke_with_call_chain'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:205:in `block in invoke_prerequisites'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:203:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:203:in `invoke_prerequisites'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:183:in `block in invoke_with_call_chain'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:177:in `invoke_with_call_chain'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/task.rb:170:in `invoke'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:143:in `invoke_task'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:101:in `block (2 levels) in top_level'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:101:in `each'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:101:in `block in top_level'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:110:in `run_with_threads'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:95:in `top_level'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:73:in `block in run'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:160:in `standard_exception_handling'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429@global/gems/rake-10.0.4/lib/rake/application.rb:70:in `run'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in `eval'
/home/vagrant/.rvm/gems/ruby-1.9.3-p429/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => db:migrate => environment
运行rake db:create:all告诉我所有表已经创建
我不知道它是否重要，但我使用的是设计2.2.4和最新的acts_as_messageable。
请注意，这个应用程序适用于Windows开发机器和heroku中的生产..我只是想让它在流浪者上运行..
我的database.yml是
common: &common
adapter: postgresql
enconding: utf8
host: localhost
username: postgres
password: 1234
pool: 5
timeout: 5000
development:
<<: *common
database: myapp_dev
port: 5432
test:
<<: *common
database: myapp_test
production:
<<: *common
database: myapp_prod
我怀疑它与一些postgres配置有关，但我不确定..找不到任何解决方案
检查psql时我得到了这个
postgres=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-------------+----------+----------+-------------+-------------+-----------------------
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
myapp_dev | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
myapp_prod | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
myapp_test | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
(6 rows)
postgres=# \d myapp_dev
Did not find any relation named "myapp_dev".
所以我认为这里有问题..有解决方案吗？
注意 - 在rake db，schema:load等setup任务中会发生这种情况。
如果需要，这里是与acts_as_messageable相关的错误的相关行，包括迁移文件
用户：第120-123行
acts_as_messageable :table_name => "messages",
:required => :body,
:class_name => "Message",
:dependent => :destroy
消息类（第25-29行）
class Message < ActsAsMessageable::Message
attr_accessible :sender_open, :reciever_open
scope :unread_by, lambda{ |user| where("reciever_open = false AND received_messageable_id = ?", user.id)}
scope :unread, where('reciever_open = false')
迁移文件 - 20121127082447_create_messages_table.rb（它不是第一个或最后一个，位于中间的某个地方）
class CreateMessagesTable < ActiveRecord::Migration
def self.up
create_table :messages do |t|
t.string :topic
t.text :body
t.references :received_messageable, :polymorphic => true
t.references :sent_messageable, :polymorphic => true
t.boolean :opened, :default => false
t.boolean :recipient_delete, :default => false
t.boolean :sender_delete, :default => false
t.timestamps
# ancestry
t.string :ancestry
end
add_index :messages, [:sent_messageable_id, :received_messageable_id], :name => "acts_as_messageable_ids"
add_index :messages, :ancestry
end
def self.down
drop_table :messages
end
end
答案 0 :(得分：5)
Rails中的Routes文件使用device_for加载用户模型，而用户模型又加载acts_as_messagable并加载Message类。 Message课程中的第29行说：
scope :unread, where('reciever_open = false')
where方法正在触发列查找，但由于迁移尚未运行而失败！尝试以下两种方法之一：
将其更改为：
scope :unread, where(:reciever_open => false)
或者，如果这也触发了列查找，那么请说：
scope :unread, lambda { where('reciever_open = false') }
答案 1 :(得分：0)
试着检查一下这里显而易见的问题，但是你尝试过运行rake db:drop吗？每当我对迁移进行更改时，我都需要在尝试创建和迁移它们之前删除所有数据库表。
所以完整的操作将是rake db:drop db:create db:migrate
哦，你也可以尝试指定环境（我有时需要在测试环境中这样做），例如： rake RAILS_ENV=test db:drop db:create db:migrate