ruby-on-rails – rake db：schema：load找不到表

原始问题：

我在一周前开始研究Rails项目,使用迁移多次更改数据库模式.昨天我尝试使用以下命令从头开始创建我的数据库(developpement environnement,默认配置)：

rake db:drop
rake db:create
rake db:schema:load

使用–trace选项加载架构时收到此消息：

** Invoke db:schema:load (first_time)
** Invoke environment (first_time)
** Execute environment
rake aborted!
Could not find table 'galleries'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/sqlite_adapter.rb:439:in `table_structure'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/sqlite_adapter.rb:322:in `columns'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in `block (2 levels) in initialize'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:185:in `with_connection'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:92:in `block in initialize'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:106:in `yield'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:106:in `default'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:106:in `block in initialize'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/base.rb:717:in `yield'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/base.rb:717:in `default'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/base.rb:717:in `columns_hash'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/locking/optimistic.rb:145:in `locking_enabled?'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/relation.rb:110:in `to_a'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/relation/finder_methods.rb:159:in `all'
/var/lib/gems/1.9.1/gems/activerecord-3.1.3/lib/active_record/base.rb:441:in `all'
/home/fabien/Dropbox/portfolio/app/admin/photos.rb:10:in `block in <top (required)>'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/dsl.rb:13:in `instance_eval'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/dsl.rb:13:in `run_registration_block'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/namespace.rb:171:in `parse_registration_block'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/namespace.rb:50:in `register'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/application.rb:87:in `register'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin.rb:60:in `register'
/home/fabien/Dropbox/portfolio/app/admin/photos.rb:1:in `<top (required)>'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `block in load'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/application.rb:132:in `block in load!'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/application.rb:132:in `each'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/application.rb:132:in `load!'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/application.rb:155:in `routes'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin.rb:63:in `routes'
/home/fabien/Dropbox/portfolio/config/routes.rb:9:in `block in <top (required)>'
/var/lib/gems/1.9.1/gems/actionpack-3.1.3/lib/action_dispatch/routing/route_set.rb:258:in `instance_exec'
/var/lib/gems/1.9.1/gems/actionpack-3.1.3/lib/action_dispatch/routing/route_set.rb:258:in `eval_block'
/var/lib/gems/1.9.1/gems/actionpack-3.1.3/lib/action_dispatch/routing/route_set.rb:235:in `draw'
/home/fabien/Dropbox/portfolio/config/routes.rb:1:in `<top (required)>'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `block in load'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:234:in `load'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application/routes_reloader.rb:29:in `block in load_paths'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application/routes_reloader.rb:29:in `each'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application/routes_reloader.rb:29:in `load_paths'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application/routes_reloader.rb:13:in `reload!'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:87:in `reload_routes!'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/reloader.rb:34:in `reload!'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/reloader.rb:28:in `block in initialize'
/    var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/file_update_checker.rb:32:in `call'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/file_update_checker.rb:32:in `execute_if_updated'
/var/lib/gems/1.9.1/gems/activeadmin-0.3.4/lib/active_admin/reloader.rb:45:in `block in attach!'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/callbacks.rb:404:in `_run_prepare_callbacks'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/callbacks.rb:81:in `run_callbacks'
/var/lib/gems/1.9.1/gems/actionpack-3.1.3/lib/action_dispatch/middleware/reloader.rb:46:in `prepare!'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application/finisher.rb:41:in `block in <module:Finisher>'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `instance_exec'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:30:in `run'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:55:in `block in run_initializers'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `each'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/initializable.rb:54:in `run_initializers'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:96:in `initialize!'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/railtie/configurable.rb:30:in `method_missing'
/home/fabien/Dropbox/portfolio/config/environment.rb:5:in `<top (required)>'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `block in require'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `block in load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:640:in `new_constants_in'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:223:in `load_dependency'
/var/lib/gems/1.9.1/gems/activesupport-3.1.3/lib/active_support/dependencies.rb:240:in `require'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:83:in `require_environment!'
/var/lib/gems/1.9.1/gems/railties-3.1.3/lib/rails/application.rb:193:in `block (2 levels) in initialize_tasks'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/usr/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `block in invoke_prerequisites'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `block in invoke_with_call_chain'
/usr/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/var/lib/gems/1.9.1/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19:in `<main>'
Tasks: TOP => db:schema:load => environment

作为Rails初学者,我不知道如何解决这个问题,特别是我的schema.rb有命令来创建画廊表.

我的代码可在此处获取：https://github.com/fabienengels/portfolio