Question

我想开始使用ror，但这个问题似乎无法解决。我知道有很多关于这个数据库错误的线程，但没有一个解决方案似乎有用。我现在整个下午都在论坛上搜索，没有成功。

我基本上只是从教科书中执行第一项任务，如下所示：我用

创建了一个新的RoR项目（Windows 10，SQLite3）

rails new depot

然后我使用以下代码在此项目中创建一个脚手架：

rails generate scaffold Product title:string description:text image_url:string price:decimal

当我测试应用程序时，我得到db：migrate错误。我尝试了rake db:migrate，db:rollback，db:drop然后db:create，我检查了迁移文件是否存在错误，但似乎没有任何效果。

我认为解决方案应该非常简单，因为应用程序应该像在这种状态下一样不复杂，但我无法掩盖其出现的秘密。

迁移正在等待处理。要解决此问题，请运行：

    bin/rails db:migrate RAILS_ENV=test

    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.1/lib/active_record/migration.rb:586:in `load_schema_if_pending!'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.1/lib/active_record/migration.rb:592:in `block in maintain_test_schema!'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.1/lib/active_record/migration.rb:823:in `suppress_messages'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.1/lib/active_record/migration.rb:597:in `method_missing'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activerecord-5.0.1/lib/active_record/migration.rb:592:in `maintain_test_schema!'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_help.rb:15:in `<top (required)>'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `block in require'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:259:in `load_dependency'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require'
    from C:/Users/Flori/Desktop/bsp/test/test_helper.rb:3:in `<top (required)>'
    from C:/Users/Flori/Desktop/bsp/test/controllers/products_controller_test.rb:1:in `require'
    from C:/Users/Flori/Desktop/bsp/test/controllers/products_controller_test.rb:1:in `<top (required)>'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/test_requirer.rb:11:in `require'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/test_requirer.rb:11:in `block in require_files'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/test_requirer.rb:10:in `each'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/test_requirer.rb:10:in `require_files'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/minitest_plugin.rb:86:in `plugin_rails_init'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/minitest-5.10.1/lib/minitest.rb:80:in `block in init_plugins'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/minitest-5.10.1/lib/minitest.rb:78:in `each'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/minitest-5.10.1/lib/minitest.rb:78:in `init_plugins'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/minitest-5.10.1/lib/minitest.rb:129:in `run'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-5.0.1/lib/rails/test_unit/minitest_plugin.rb:73:in `run'
    from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/minitest-5.10.1/lib/minitest.rb:62:in `block in autorun'

Answer 1

切换服务器，然后运行

rake db:drop db:create db:migrate

这必须解决您的问题

Rails数据库迁移错误

1 个答案: