导轨产生迁移不起作用

Question

I am new to Rails, and I wanted to add an email confirmation. I tried this:

 rails generate migration   AddEmailConfirmedAndConfirmTokenToUser email_confirmed:boolean confirm_token:string

but didn't work it shows this error:

Running via Spring preloader in process 19269 error mongoid [not found]

Since mongodb doesn't start in my project I am working on without using sudo mongod I tried adding sudo before rails generate migration like:

sudo rails generate migration AddEmailConfirmedAndConfirmTokenToUser email_confirmed:boolean confirm_token:string

but instead I get this:

/Users/.../.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/rubygems.rb:271:in `find_spec_for_exe': can't find gem railties (>= 0.a) (Gem::GemNotFoundException)
        from /Users/.../.rvm/rubies/ruby-2.3.1/lib/ruby/site_ruby/2.3.0/rubygems.rb:299:in `activate_bin_path'
        from /Users/.../.rvm/gems/ruby-2.3.1/bin/rails:23:in `<main>'
        from /Users/.../.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `eval'
        from /Users/.../.rvm/gems/ruby-2.3.1/bin/ruby_executable_hooks:15:in `<main>'

I did some research and was suggested to me to update Bundler but that didn't work either. I have no idea how to solve this, any suggestion would be appreciated!

Answer 1

MongoDB不需要迁移，您可以仅在模型上添加一个字段（如果已创建）。