Ruby on rails Can'；t在RubyonRails上创建模型_Ruby On Rails_Ruby_Ruby On Rails 3

Ruby on rails Can'；t在RubyonRails上创建模型

ruby-on-rails ruby ruby-on-rails-3

Ruby on rails Can'；t在RubyonRails上创建模型,ruby-on-rails,ruby,ruby-on-rails-3,Ruby On Rails,Ruby,Ruby On Rails 3,我开始学习RubyonRails。我所遇到的问题是，我不知道为什么我要在创建模型时到达那里这是我试过的命令 rails生成模型书在我的ubuntu 16终端中得到这个错误 /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/app_loader.rb:40: warning: Insecure world writable dir /opt in PATH, mode 04

我开始学习RubyonRails。我所遇到的问题是，我不知道为什么我要在创建模型时到达那里这是我试过的命令 rails生成模型书

在我的ubuntu 16终端中得到这个错误

/home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/app_loader.rb:40: warning: Insecure world writable dir /opt in PATH, mode 040777
/home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/application/configuration.rb:148:in `rescue in database_configuration': YAML syntax error occurred while parsing /home/android/ruby Tutorial/library/config/database.yml. Please note that YAML must be consistently indented using spaces. Tabs are not allowed. Error: (<unknown>): found a tab character that violate intendation while scanning a plain scalar at line 17 column 10 (RuntimeError)
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/application/configuration.rb:131:in `database_configuration'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activerecord-5.0.1/lib/active_record/railtie.rb:122:in `block (2 levels) in <class:Railtie>'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/lazy_load_hooks.rb:43:in `instance_eval'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/lazy_load_hooks.rb:43:in `execute_hook'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/lazy_load_hooks.rb:50:in `block in run_load_hooks'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/lazy_load_hooks.rb:49:in `each'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/lazy_load_hooks.rb:49:in `run_load_hooks'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activerecord-5.0.1/lib/active_record/base.rb:324:in `<module:ActiveRecord>'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activerecord-5.0.1/lib/active_record/base.rb:24:in `<top (required)>'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `block in require'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:259:in `load_dependency'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/activesupport-5.0.1/lib/active_support/dependencies.rb:293:in `require'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:345:in `active_record_configured?'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:263:in `disconnect_database'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:97:in `preload'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:143:in `serve'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:131:in `block in run'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:125:in `loop'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application.rb:125:in `run'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/spring-2.0.0/lib/spring/application/boot.rb:19:in `<top (required)>'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /home/android/.rbenv/versions/2.3.3/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from -e:1:in `<main>'

我得到了这个错误：

/home/android/.rbenv/versions/2.3.3/lib/ruby/gems/2.3.0/gems/railties-5.0.1/lib/rails/app_loader.rb:40: warning: Insecure world writable dir /opt in PATH, mode 040777
rails aborted!
Don't know how to build task 'script/generate' (see --tasks)
/home/android/ruby Tutorial/library/bin/rails:9:in `require'
/home/android/ruby Tutorial/library/bin/rails:9:in `<top (required)>'
/home/android/ruby Tutorial/library/bin/spring:14:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
(See full trace by running task with --trace)

您正在Rails 5上为Rails 2使用命令

要在Rails 5中生成模型，应使用：

rails generate model Book

使用

检查您的

config/database.yml

是否有效主要问题是您的

database.yml

文件。文件中有一个

选项卡空间

，而

YAML

文件不允许这样做，因为不同的编辑器和工具对它们的处理方式不同。而缩进是正确解释YAML最关键的部分。所以在第17行，解决这个问题。对于永久性的解决方案，保持文本编辑器的设置与此一致。我使用

Sublime

，其中每页我都有一个选项

将缩进转换为空格

，在其配置中，我可以设置

“将选项卡转换为空格”：true

关于您尝试的第二个命令：

rails script/generate model Book

它属于Rails 2的

version。请改为仅使用新命令：
rails generate model Book

签入应用程序数据库文件。该文件位于/config/database.yml中。如果没有该文件，则可以从同一目录的dtabase.yaml.example中复制。
这是您的间距，在开发、测试和生产部分中，您似乎有3个空格，而不是2个空格
2个空间：
default: &default
  adapter: mysql
  pool: 5
  timeout: 5000

3个空间：
development:
   adapter: mysql

OP的主要问题是数据库.yml。这是他尝试的第二种选择。这两个问题都是有效的。一旦database.yml被修复，它们也将运行到由我的答案修复的错误中。
default: &default
  adapter: mysql
  pool: 5
  timeout: 5000

development:
   adapter: mysql