Rails引擎在外键中出现问题
我正在开发一个rails引擎，这是我的gem.gemspec
s.required_ruby_version = '>= 2.0.0' s.add_dependency 'rails', '>= 4.2.0' s.add_dependency 'enumerate_it' s.add_dependency 'slim-rails' s.add_dependency 'bootstrap-sass' s.add_dependency 'jquery-rails' s.add_development_dependency 'rdoc' s.add_development_dependency 'tomdoc' s.add_development_dependency 'sqlite3' s.add_development_dependency 'rspec-rails' s.add_development_dependency 'timecop' s.add_development_dependency 'shoulda-matchers' s.add_development_dependency 'factory_girl_rails' s.add_development_dependency 'database_cleaner' s.add_development_dependency 'awesome_print' s.add_development_dependency 'guard' s.add_development_dependency 'guard-rspec' s.add_development_dependency 'guard-migrate' s.add_development_dependency 'guard-livereload' s.add_development_dependency 'thor' s.add_development_dependency 'simplecov' s.add_development_dependency 'codeclimate-test-reporter'
这是我的迁移文件，当我运行install命令时，它将被复制到我的rails应用程序：
class CreateMpaStorySchema < ActiveRecord::Migration def change create_table :mpa_story_archetypes do |t| t.string :name t.string :api_name t.string :api_key t.text :description t.integer :kind, index: true t.integer :tier, index: true t.integer :execution, index: true t.integer :interaction, index: true t.string :klass t.integer :expected_runtime t.timestamps null: false end create_table :mpa_story_adjacency_matrices do |t| t.references :archetype, index: true, foreign_key: true t.integer :kind, index: true t.integer :predecessor_id, index: true t.integer :successor_id, index: true t.integer :branch, default: 0 t.timestamps null: false end create_table :mpa_story_instances do |t| t.integer :status, index: true t.text :artifacts t.timestamps null: false end create_table :mpa_story_instance_steps do |t| t.references :archetype, index: true, foreign_key: true t.references :instance, index: true, foreign_key: true t.integer :kind, index: true t.integer :elapsed_time t.timestamps null: false end create_table :mpa_story_instance_artifacts do |t| t.references :instance, index: true, foreign_key: true t.string :klass, index: true, foreign_key: true t.text :value t.timestamps null: false end create_table :mpa_story_protocol_parameters do |t| t.references :archetype, index: true, foreign_key: true t.integer :interaction, index: true t.string :klass t.integer :kind, index: true t.string :parameter t.timestamps null: false end create_table :mpa_story_archetypes_instances, id: false do |t| t.references :archetype, index: true, foreign_key: true t.references :instance, index: true, foreign_key: true end create_table :mpa_story_dynamic_routes do |t| t.references :archetype, index: true, foreign_key: true t.string :name t.text :actions t.timestamps null: false end create_table :mpa_story_dynamic_actions do |t| t.references :dynamic_route, index: true, foreign_key: true t.integer :kind, index: true t.string :name t.string :http_method t.timestamps null: false end create_table :mpa_story_business_rules do |t| t.references :archetype, index: true, foreign_key: true t.string :api_key, index: true t.timestamps null: false end create_table :mpa_story_notifications do |t| t.references :archetype, index: true, foreign_key: true t.string :api_key, index: true t.timestamps null: false end add_index :mpa_story_archetypes, :api_name, unique: true add_index :mpa_story_archetypes, :api_key, unique: true create_table :mpa_story_comments do |t| t.references :archetype, index: true, foreign_key: true t.string :name t.text :comment t.integer :parent_id, index: true t.integer :lft, index: true t.integer :rgt, index: true t.integer :depth t.timestamps null: false end end end
在我的rails应用程序中，这是我的Gemfile
source 'https://rubygems.org' # not used yet! source 'https://rails-assets.org' ruby '2.2.1' gem 'rails', '4.2.0' # Front-end gem 'sass-rails', '~> 5.0' gem 'coffee-rails' gem 'uglifier', '>= 1.3.0' gem 'therubyracer', platforms: :ruby gem 'jquery-rails' gem 'turbolinks' gem 'jbuilder', '~> 2.0' gem 'bootstrap-sass', '~> 3.3.1.0' gem 'autoprefixer-rails', '~> 4.0.2.2' # View gem 'simple_form', '~> 3.1.0' gem 'responders', '~> 2.0.2' gem 'slim-rails', '~> 3.0.1' gem 'enumerate_it', '~> 1.2.3' # Infra gem 'pg', '~> 0.18.1' # Auth gem 'devise', '~> 3.4.1' gem 'devise-i18n-views', '~> 0.3.3' gem 'mini_magick' gem 'refile', require: ['refile/rails', 'refile/image_processing'] gem 'aws-sdk', '= 1.2.6' gem 'awesome_nested_set' group :doc do gem 'sdoc', require: false end group :development, :test do # Tests gem 'parallel_tests' gem 'byebug' gem 'spring' gem 'better_errors' gem 'binding_of_caller' gem 'meta_request' gem 'quiet_assets' gem 'web-console', '~> 2.0' gem 'guard' gem 'guard-rspec' gem 'guard-bundler' gem 'guard-livereload' gem 'guard-migrate' gem 'foreman' gem 'rspec-rails', '~> 3.1.0' gem 'teaspoon', '~> 0.8.0' gem 'shoulda-matchers', '~> 2.7.0' gem 'fuubar', '~> 2.0.0' gem 'awesome_print' gem 'pry-rails' end group :test do gem 'capybara', '~> 2.4.4' gem 'capybara-screenshot', '~> 1.0.4' gem 'poltergeist', '~> 1.5.1' gem 'launchy', '~> 2.4.3' gem 'database_cleaner', '~> 1.4.0' gem 'factory_girl_rails', '~> 4.5.0' gem 'forgery', '~> 0.6.0' gem 'brazilian_forgery', git: 'https://github.com/internetsistemas/brazilian_forgery.git' gem 'simplecov', require: false gem 'codeclimate-test-reporter', require: false end group :production do gem 'rails_12factor' end
我省略了引擎的路径，因为它是私有的。
好吧，这是我的问题，有了这个配置，当我运行我的迁移RAILS_ENV=test rake db:drop db:create db:migrate然后运行我的规范rspec一切正常。
但是当我尝试在我的gem.gemspec和Gemfile更新我的引擎for rails 4.2.1 ，如下所示：
gem.gemspec
s.required_ruby_version = '~> 2.2' s.add_dependency 'rails', '>= 4.2.1' s.add_dependency 'enumerate_it' s.add_dependency 'slim-rails' s.add_dependency 'bootstrap-sass' s.add_dependency 'jquery-rails' s.add_development_dependency 'rdoc' s.add_development_dependency 'tomdoc' s.add_development_dependency 'sqlite3' s.add_development_dependency 'rspec-rails' s.add_development_dependency 'timecop' s.add_development_dependency 'shoulda-matchers' s.add_development_dependency 'factory_girl_rails' s.add_development_dependency 'database_cleaner' s.add_development_dependency 'awesome_print' s.add_development_dependency 'guard' s.add_development_dependency 'guard-rspec' s.add_development_dependency 'guard-migrate' s.add_development_dependency 'guard-livereload' s.add_development_dependency 'thor' s.add_development_dependency 'simplecov' s.add_development_dependency 'codeclimate-test-reporter'
使用我的引擎的我的rails应用程序的Gemfile
gem 'rails', '4.2.1'
然后我为我的引擎和我的rails应用程序运行bundle update 。
当我运行RAILS_ENV=test rake db:drop db:create db:migrate迁移运行良好，但是当我尝试运行rspec我遇到了与外键相关的错误，如下所示：
== 20150416144229 CreateMpaStorySchema：迁移============================= – create_table（：mpa_story_archetypes） – > 0.2872s – create_table（ ：mpa_story_adjacency_matrices）rake aborted！ StandardError：发生错误，此以及所有后续迁移都已取消：
PG::UndefinedTable: ERRO: relação "archetypes" não existe : ALTER TABLE "mpa_story_adjacency_matrices" ADD CONSTRAINT "fk_rails_2b6894b4f9" FOREIGN KEY ("archetype_id") REFERENCES "archetypes" ("id")
任何人都知道是否存在与rails 4.2.1和引擎相关的一些错误？
这是因为您的迁移正在生成一个带前缀的表：mpa_story_archetypes。
两种可能的方案：
1 – 当您使用引用方法时，明确声明您的表…如：
t.references :mpa_story_archetype, index: true, foreign_key: true
2 – 自己添加foreign_key，删除t.references上的foreign_key选项并调用add_foreign_key方法：
add_foreign_key :mpa_story_adjacency_matrices, :mpa_story_archetypes, column: :archetype_id
我更喜欢解决方案2，你必须在每个有foreign_key的表中都这样做