我正在尝试从redmine 1.0迁移到redmine 2.3，并在运行db：migrate时出现错误。
sudo rake db:migrate RAILS_ENV=production --trace (in /opt/redmine-2.3) /var/lib/gems/1.8/gems/rake-10.0.4/lib/rake/file_utils.rb:9: warning: already initialized constant RUBY /var/lib/gems/1.8/gems/rake-10.0.4/lib/rake/file_utils.rb:86: warning: already initialized constant LN_SUPPORTED ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment ** Invoke db:load_config (first_time) ** Execute db:load_config ** Execute db:migrate == BuildProjectsTree: migrating ============================================== rake aborted! An error has occurred, all later migrations canceled: undefined method `inherit_members_changed?' for #<Project:0x7f82e2dad038> /var/lib/gems/1.8/gems/activemodel-3.2.13/lib/active_model/attribute_methods.rb:407:in `method_missing' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/attribute_methods.rb:149:in `method_missing' /opt/redmine-2.3/app/models/project.rb:85:in `_callback_after_748' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:460:in `_run__1269722363__save__4__callbacks' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:405:in `send' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:405:in `__run_callback' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:385:in `_run_save_callbacks' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:81:in `send' /var/lib/gems/1.8/gems/activesupport-3.2.13/lib/active_support/callbacks.rb:81:in `run_callbacks' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/callbacks.rb:264:in `create_or_update' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/persistence.rb:104:in `save!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/validations.rb:56:in `save!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/attribute_methods/dirty.rb:33:in `save!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:264:in `save!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:313:in `with_transaction_returning_status' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:208:in `transaction' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:311:in `with_transaction_returning_status' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:264:in `save!' /opt/redmine-2.3/lib/plugins/awesome_nested_set/lib/awesome_nested_set/awesome_nested_set.rb:185:in `rebuild!' /opt/redmine-2.3/lib/plugins/awesome_nested_set/lib/awesome_nested_set/awesome_nested_set.rb:192:in `call' /opt/redmine-2.3/lib/plugins/awesome_nested_set/lib/awesome_nested_set/awesome_nested_set.rb:192:in `rebuild!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/relation/delegation.rb:6:in `each' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/relation/delegation.rb:6:in `__send__' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/relation/delegation.rb:6:in `each' /opt/redmine-2.3/lib/plugins/awesome_nested_set/lib/awesome_nested_set/awesome_nested_set.rb:189:in `rebuild!' /opt/redmine-2.3/app/models/project.rb:416:in `rebuild_tree!' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/transactions.rb:208:in `transaction' /opt/redmine-2.3/app/models/project.rb:414:in `rebuild_tree!' /opt/redmine-2.3/db/migrate/105_build_projects_tree.rb:3:in `up' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:370:in `up' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:410:in `send' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:410:in `migrate' /usr/lib/ruby/1.8/benchmark.rb:293:in `measure' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:410:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/connection_adapters/abstract/connection_pool.rb:129:in `with_connection' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:389:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:528:in `__send__' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:528:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:720:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:777:in `call' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:777:in `ddl_transaction' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:719:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:700:in `each' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:700:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:570:in `up' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/migration.rb:551:in `migrate' /var/lib/gems/1.8/gems/activerecord-3.2.13/lib/active_record/railties/databases.rake:193 /usr/lib/ruby/1.8/rake.rb:636:in `call' /usr/lib/ruby/1.8/rake.rb:636:in `execute' /usr/lib/ruby/1.8/rake.rb:631:in `each' /usr/lib/ruby/1.8/rake.rb:631:in `execute' /usr/lib/ruby/1.8/rake.rb:597:in `invoke_with_call_chain' /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' /usr/lib/ruby/1.8/rake.rb:590:in `invoke_with_call_chain' /usr/lib/ruby/1.8/rake.rb:583:in `invoke' /usr/lib/ruby/1.8/rake.rb:2051:in `invoke_task' /usr/lib/ruby/1.8/rake.rb:2029:in `top_level' /usr/lib/ruby/1.8/rake.rb:2029:in `each' /usr/lib/ruby/1.8/rake.rb:2029:in `top_level' /usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling' /usr/lib/ruby/1.8/rake.rb:2023:in `top_level' /usr/lib/ruby/1.8/rake.rb:2001:in `run' /usr/lib/ruby/1.8/rake.rb:2068:in `standard_exception_handling' /usr/lib/ruby/1.8/rake.rb:1998:in `run' /usr/bin/rake:28 问题似乎是project.inherit_members_changed？ 不存在，但在project.rb的第85行调用
after_save :update_inherited_members, :if => Proc.new {|project| project.inherit_members_changed?}
有谁知道这个问题的根源是什么？
::更新::
我现在尝试升级到ruby1.9.3，并得到相同的错误。
rake db:migrate RAILS_ENV=production == BuildProjectsTree: migrating ============================================== rake aborted! An error has occurred, all later migrations canceled: undefined method `inherit_members_changed?' for #<Project:0x00000004b36d80>
这可能是一个耙版本问题？
我也运行了bundle安装，并安装了所有需要的gem。
你的Ruby太旧了。 Redmine会狡猾地告诉你，最新版本的Redmine使用Ruby 1.8.7，但是我失去了大约两个小时的这个谎言。 我有Redmine在CentOS 6.4上使用ruby 1.9.3p385。 尝试更新到该版本，你可能会运行你的耙子命令。 这样更新Ruby：
http://www.ruby-lang.org/en/downloads/ （检查第三方工具/ RVM部分）。
我试了上面的两个解决scheme，编辑数据库的选项是唯一的工作。 升级到Ruby 2.1并没有改变任何东西。 但是，我可以评论说，我不需要“drop index”命令，并且根据有多less失败的迁移，我有时需要删除成员angular色表。 最后，最可重复的解决scheme是在迁移期间不要手动编辑数据库，而是自己编辑迁移文件，以便在正确的位置删除inherit_members字段，并在正确的位置再次添加。 要编辑的两个文件是：
db/migrate/20130202090625_add_projects_inherit_members.rb
projects列之前remove_column :projects, :inherit_members需要添加行remove_column :projects, :inherit_members db/migrate/105_build_projects_tree.rb
Project.rebuid_tree之前添加add_column :projects, :inherit_members, :boolean, :default => false, :null => false ！ 完成这两个更改后，可以一次完成一个完整的升级过程，而无需打开一个mysql shell（当然除了初始创build数据库，用户和权限命令）。
我在CentOS 6.2上遇到了完全相同的错误，Ruby 1.9.3-p392试图从0.8.x升级到2.3.0。 Ruby和最新版本的gem。 我做到了
更改数据库。 你可能不需要放弃索引，因为升级了一半的状态。
alter table projects add column inherit_members boolean default false; 更新项目集inherit_members = false; drop index changesets_repos_scmid; drop index index_attachments_on_author_id; drop index index_attachments_on_container_id_and_container_type; drop index index_attachments_on_created_on; drop index index_auth_sources_on_id_and_type; drop index index_boards_on_last_message_id; drop index index_changesets_on_committed_on; drop index index_changesets_on_repository_id; drop index index_changesets_on_user_id; drop index index_comments_on_author_id; drop index index_comments_on_commented_id_and_commented_type; drop index index_custom_fields_on_id_and_type; drop index index_custom_fields_projects_on_custom_field_id_and_project_id; drop index index_custom_fields_trackers_on_custom_field_id_and_tracker_id; drop index index_custom_values_on_custom_field_id; drop index index_documents_on_category_id; drop index index_documents_on_created_on; drop index index_issue_categories_on_assigned_to_id; drop index index_issue_relations_on_issue_from_id; drop index index_issue_relations_on_issue_from_id_and_issue_to_id; drop index index_issue_relations_on_issue_to_id; drop index index_issues_on_assigned_to_id; drop index index_issues_on_author_id; drop index index_issues_on_category_id; drop index index_issues_on_created_on; drop index index_issues_on_fixed_version_id; drop index index_issues_on_priority_id drop index index_issues_on_priority_id; drop index index_issues_on_status_id; drop index index_issues_on_tracker_id; drop index index_issue_statuses_on_is_closed; drop index index_issue_statuses_on_is_default; drop index index_issue_statuses_on_position; drop index index_journals_on_created_on; drop index index_journals_on_journalized_id; drop index index_journals_on_user_id; drop index index_members_on_project_id; drop index index_members_on_user_id; drop index index_members_on_user_id_and_project_id; drop index index_messages_on_author_id; drop index index_messages_on_created_on; drop index index_messages_on_last_reply_id; drop index index_news_on_author_id; drop index index_news_on_created_on; drop index index_queries_on_project_id; drop index index_queries_on_user_id; drop index index_repositories_on_project_id; drop index index_settings_on_name; drop index index_time_entries_on_activity_id; drop index index_time_entries_on_created_on; drop index index_time_entries_on_user_id; drop index index_tokens_on_user_id; drop index index_user_preferences_on_user_id; drop index index_users_on_auth_source_id; drop index index_users_on_id_and_type; drop index index_users_on_type; drop index index_watchers_on_user_id; drop index index_watchers_on_watchable_id_and_watchable_type; 删除索引index_wiki_contents_on_author_id; 删除索引index_wiki_content_versions_on_updated_on; drop index index_wiki_pages_on_parent_id; drop index index_wiki_pages_on_wiki_id; drop index index_wiki_redirects_on_wiki_id; drop index index_workflows_on_new_status_id; drop index index_workflows_on_old_status_id; drop index index_workflows_on_role_id; drop index projects_trackers_unique; 放弃索引tokens_value; 删除索引watchers_user_id_type; cd / usr / local / redmine 耙tmp：caching：清除 耙tmp：会议：明确 rake generate_secret_token rake --trace db：migrate RAILS_ENV = production
那个在原来抱怨不存在的专栏上就会失败。
“错误：关系”项目“的列”inherit_members“已经存在”
删除列并再次迁移：
alter table projects drop column inherit_members; cd / usr / local / redmine rake --trace db：migrate RAILS_ENV = production
完成没有错误。