mysql - 全局化，Heroku:PG::UndefinedTable:错误:关系不存在

Question

我刚刚向模型添加了全局化(使用 globalize gem)。

模型:

class Information::Blog::Post < ApplicationRecord

    self.table_name = 'information_blog_posts'

    translates :title, :subtitle

end

迁移:

class CreateInformationBlogPosts < ActiveRecord::Migration[5.1]
    def change
        create_table :information_blog_posts do |t|

            t.references :author, index: true


            t.datetime :published_at
            t.timestamps

        end
    end

    def up
        Information::Blog::Post.create_translation_table! title: { type: :string, null: false }, subtitle: { type: :string, null: false }
    end

    def down
        Information::Blog::Post.drop_translation_table!
    end
end

现在，在我的种子中我添加了这一行:

post = Information::Blog::Post.create(id: 1, author_id: 1, title: 'Test', subtitle: 'Test test test test', locale: 'en')

它完美地植入了我的本地 MySQL 数据库。不过，在部署到 heroku 之后，重置和迁移 我的 postres 生产数据库，我在为数据库做种时遇到以下错误:

rails aborted!
ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR:  relation "information_blog_post_translations" does not exist
LINE 8:                WHERE a.attrelid = '"information_blog_post_tr...
                                          ^
:               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod,
                     c.collname, col_description(a.attrelid, a.attnum) AS comment
                FROM pg_attribute a
                LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum
                LEFT JOIN pg_type t ON a.atttypid = t.oid
                LEFT JOIN pg_collation c ON a.attcollation = c.oid AND a.attcollation <> t.typcollation
               WHERE a.attrelid = '"information_blog_post_translations"'::regclass
                 AND a.attnum > 0 AND NOT a.attisdropped
               ORDER BY a.attnum
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:85:in `async_exec'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:85:in `block (2 levels) in query'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies/interlock.rb:46:in `block in permit_concurrent_loads'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/concurrency/share_lock.rb:185:in `yield_shares'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies/interlock.rb:45:in `permit_concurrent_loads'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:84:in `block in query'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:612:in `block (2 levels) in log'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:611:in `block in log'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:603:in `log'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:83:in `query'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:775:in `column_definitions'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:166:in `columns'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/schema_cache.rb:67:in `columns'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/schema_cache.rb:73:in `columns_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:451:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attributes.rb:233:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attribute_decorators.rb:50:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:446:in `load_schema'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:339:in `columns_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/table_metadata.rb:39:in `has_column?'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:91:in `block in create_binds_for_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:89:in `each'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:89:in `create_binds_for_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:34:in `create_binds'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/where_clause_factory.rb:21:in `build'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/query_methods.rb:612:in `where!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/query_methods.rb:605:in `where'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:69:in `last_chain_scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:126:in `add_constraints'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:28:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:5:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:97:in `association_scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:86:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:284:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:279:in `skip_statement_cache?'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:302:in `find_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:269:in `load_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_proxy.rb:41:in `load_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_proxy.rb:1028:in `records'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/delegation.rb:39:in `each'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:114:in `detect'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:114:in `translation_for'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:72:in `fetch_attribute'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:25:in `block in fetch'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:24:in `each'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:24:in `fetch'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter_dirty.rb:34:in `store_old_value'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter_dirty.rb:8:in `write'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:31:in `write_attribute'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/class_methods.rb:96:in `block in define_translated_attr_writer'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:46:in `public_send'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:46:in `_assign_attribute'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:40:in `block in _assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:39:in `each'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:39:in `_assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attribute_assignment.rb:26:in `_assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:33:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/attr_encrypted-3.0.3/lib/attr_encrypted/adapters/active_record.rb:28:in `perform_attribute_assignment'
/app/vendor/bundle/ruby/2.3.0/gems/attr_encrypted-3.0.3/lib/attr_encrypted/adapters/active_record.rb:36:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:23:in `block in assign_attributes'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize.rb:27:in `with_locale'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:203:in `with_given_locale'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:23:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/core.rb:337:in `initialize'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/inheritance.rb:66:in `new'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/inheritance.rb:66:in `new'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/persistence.rb:33:in `create'
/app/db/seeds.rb:48:in `<top (required)>'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `load'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `block in load'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:258:in `load_dependency'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `load'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/engine.rb:549:in `load_seed'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/tasks/database_tasks.rb:270:in `load_seed'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/railties/databases.rake:184:in `block (2 levels) in <top (required)>'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands/rake/rake_command.rb:21:in `block in perform'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/command.rb:46:in `invoke'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands.rb:16:in `<top (required)>'
/app/bin/rails:4:in `require'
/app/bin/rails:4:in `<main>'
PG::UndefinedTable: ERROR:  relation "information_blog_post_translations" does not exist
LINE 8:                WHERE a.attrelid = '"information_blog_post_tr...
                                          ^
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:85:in `async_exec'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:85:in `block (2 levels) in query'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies/interlock.rb:46:in `block in permit_concurrent_loads'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/concurrency/share_lock.rb:185:in `yield_shares'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies/interlock.rb:45:in `permit_concurrent_loads'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:84:in `block in query'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:612:in `block (2 levels) in log'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:611:in `block in log'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:603:in `log'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql/database_statements.rb:83:in `query'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/postgresql_adapter.rb:775:in `column_definitions'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/abstract_adapter.rb:166:in `columns'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/schema_cache.rb:67:in `columns'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/connection_adapters/schema_cache.rb:73:in `columns_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:451:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attributes.rb:233:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attribute_decorators.rb:50:in `load_schema!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:446:in `load_schema'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/model_schema.rb:339:in `columns_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/table_metadata.rb:39:in `has_column?'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:91:in `block in create_binds_for_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:89:in `each'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:89:in `create_binds_for_hash'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/predicate_builder.rb:34:in `create_binds'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/where_clause_factory.rb:21:in `build'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/query_methods.rb:612:in `where!'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/query_methods.rb:605:in `where'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:69:in `last_chain_scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:126:in `add_constraints'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:28:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association_scope.rb:5:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:97:in `association_scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:86:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:284:in `scope'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/association.rb:279:in `skip_statement_cache?'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:302:in `find_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_association.rb:269:in `load_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_proxy.rb:41:in `load_target'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/associations/collection_proxy.rb:1028:in `records'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/relation/delegation.rb:39:in `each'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:114:in `detect'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:114:in `translation_for'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:72:in `fetch_attribute'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:25:in `block in fetch'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:24:in `each'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter.rb:24:in `fetch'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter_dirty.rb:34:in `store_old_value'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/adapter_dirty.rb:8:in `write'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:31:in `write_attribute'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/class_methods.rb:96:in `block in define_translated_attr_writer'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:46:in `public_send'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:46:in `_assign_attribute'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:40:in `block in _assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:39:in `each'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:39:in `_assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/attribute_assignment.rb:26:in `_assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activemodel-5.1.0.rc2/lib/active_model/attribute_assignment.rb:33:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/attr_encrypted-3.0.3/lib/attr_encrypted/adapters/active_record.rb:28:in `perform_attribute_assignment'
/app/vendor/bundle/ruby/2.3.0/gems/attr_encrypted-3.0.3/lib/attr_encrypted/adapters/active_record.rb:36:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:23:in `block in assign_attributes'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize.rb:27:in `with_locale'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:203:in `with_given_locale'
/app/vendor/bundle/ruby/2.3.0/bundler/gems/globalize-6f9d3f38d132/lib/globalize/active_record/instance_methods.rb:23:in `assign_attributes'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/core.rb:337:in `initialize'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/inheritance.rb:66:in `new'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/inheritance.rb:66:in `new'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/persistence.rb:33:in `create'
/app/db/seeds.rb:48:in `<top (required)>'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `load'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `block in load'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:258:in `load_dependency'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.1.0.rc2/lib/active_support/dependencies.rb:286:in `load'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/engine.rb:549:in `load_seed'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/tasks/database_tasks.rb:270:in `load_seed'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.0.rc2/lib/active_record/railties/databases.rake:184:in `block (2 levels) in <top (required)>'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands/rake/rake_command.rb:21:in `block in perform'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/command.rb:46:in `invoke'
/app/vendor/bundle/ruby/2.3.0/gems/railties-5.1.0.rc2/lib/rails/commands.rb:16:in `<top (required)>'
/app/bin/rails:4:in `require'
/app/bin/rails:4:in `<main>'
Tasks: TOP => db:seed
(See full trace by running task with --trace)

---

为什么这只能在本地使用 MySQL？

Answer 1

根据源码source code Rails 完全忽略 up/down 方法，如果有 change 一个