ActiveRecord :: StatementInvalid：PG :: UndefinedTable：錯誤：關係「options」不存在

Question

allo。當我嘗試我得到這個錯誤「的Heroku運行耙分貝：遷移」：

rake aborted! 
ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR: relation "options" does not exist 
LINE 5:    WHERE a.attrelid = '"options"'::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 = '"options"'::regclass 
       AND a.attnum > 0 AND NOT a.attisdropped 
       ORDER BY a.attnum 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:768:in `async_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:768:in `exec_no_cache' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:138:in `block in exec_query' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:425:in `block in log' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:420:in `log' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:137:in `exec_query' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:915:in `column_definitions' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/schema_statements.rb:174:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:114:in `block in prepare_default_proc' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:56:in `yield' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:56:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/model_schema.rb:208:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/model_schema.rb:217:in `columns_hash' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `block in valid?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `all?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `valid?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:18:in `method_missing' 
/app/app/models/option.rb:4:in `get_config_value' 
/app/app/models/achat.rb:17:in `<class:Achat>' 
/app/app/models/achat.rb:1:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:329:in `require_or_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:288:in `depend_on' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:206:in `require_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:465:in `block (2 levels) in eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `block in eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:347:in `eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' 
/app/config/environment.rb:5:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:249:in `block in run_tasks_blocks' 
/app/vendor/bundle/ruby/2.2.0/gems/rake-11.3.0/exe/rake:27:in `<top (required)>' 
PG::UndefinedTable: ERROR: relation "options" does not exist 
LINE 5:    WHERE a.attrelid = '"options"'::regclass 
             ^
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:768:in `async_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:768:in `exec_no_cache' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:138:in `block in exec_query' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:425:in `block in log' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:420:in `log' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:137:in `exec_query' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql_adapter.rb:915:in `column_definitions' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/schema_statements.rb:174:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:114:in `block in prepare_default_proc' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:56:in `yield' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/schema_cache.rb:56:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/model_schema.rb:208:in `columns' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/model_schema.rb:217:in `columns_hash' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `block in valid?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `all?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:60:in `valid?' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.0.0/lib/active_record/dynamic_matchers.rb:18:in `method_missing' 
/app/app/models/option.rb:4:in `get_config_value' 
/app/app/models/achat.rb:17:in `<class:Achat>' 
/app/app/models/achat.rb:1:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:329:in `require_or_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:288:in `depend_on' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:206:in `require_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:465:in `block (2 levels) in eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:464:in `block in eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:462:in `eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/engine.rb:347:in `eager_load!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application/finisher.rb:56:in `block in <module:Finisher>' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' 
/app/config/environment.rb:5:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:189:in `require_environment!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.0.0/lib/rails/application.rb:249:in `block in run_tasks_blocks' 
/app/vendor/bundle/ruby/2.2.0/gems/rake-11.3.0/exe/rake:27:in `<top (required)>' 
Tasks: TOP => db:migrate => environment 
(See full trace by running task with --trace) 
' 

但是當我運行「耙分貝：遷移」我的電腦上運行良好。任何人都可以幫助我。我與導軌4.0.0，2.2.3紅寶石，Postgres的SGBD工作，我在linuxmint 17

我的移民：

class CreateOptions < ActiveRecord::Migration 
    def change 
    create_table :options do |t| 
     t.string :config_key 
     t.string :config_value 

     t.timestamps 
    end 
    end 
end 

我的模型：

class Option < ActiveRecord::Base 
    class << self 
    def get_config_value(key) 
     c = find_by_config_key(key) 
     c.nil? ? nil : c.config_value 
    end 


    def set_config_values(values_hash) 
     values_hash.each_pair { |key, value| set_value(key.to_s.camelize, value) } 
    end 

    def set_value(key, value) 
     config = find_by_config_key(key) 
     config.nil? ? 
     Option.create(:config_key => key, :config_value => value) : 
     config.update_attribute(:config_value, value) 
    end 

    def get_multiple_configs_as_hash(keys) 
     conf_hash = {} 
     keys.each { |k| conf_hash[k.underscore.to_sym] = get_config_value(k) } 
     conf_hash 
    end 

    end 
end 

Answer 1

我解決我的問題。實際上，在設置數據庫之前，heroku首先檢查模型，並在我的類選項級別創建一個繼承錯誤來源的選項的子類。我首先刪除了這個遺產，執行了遷移，然後將其恢復並行走。謝謝