Rails 3, using mongoid but syntax error gets produced

In my development environment, which is windows 7, Ruby1.9.2p180, everything works fine.

However, in production environment, which is Ubuntu 10.04, Ree 1.8.7 using rvm, following error gets produced. (I am using passenger-apache-module to run the application.)

/home/randomapp/public_html/app/models/article.rb:14: syntax error, unexpected ':', expecting kEND field :user_id, type: Hash ^ 
/home/randomapp/public_html/app/models/article.rb:15: syntax error, unexpected ':', expecting kEND field :username, type: String ^ 
/home/randomapp/public_html/app/models/article.rb:16: syntax error, unexpected ':', expecting kEND field :title, type: String ^ 
/home/randomapp/public_html/app/models/article.rb:17: syntax error, unexpected ':', expecting kEND field :content, type: String ^ 
/home/randomapp/public_html/app/models/article.rb:18: syntax error, unexpected ':', expecting kEND field :display_content, type: String ^ 

Where those lines have below codes

  field :user_id, type: Hash
  field :username, type: String
  field :title, type: String
  field :content, type: String
  field :disp开发者_开发百科lay_content, type: String

Assuming above lines work fine in development, do you think it may be a problem with syntax parser??? How can I resolve this problem?

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You are using the 1.9.2 hash syntax. If you want to run on both 1.9.2 and 1.8.7 then try this:

field :user_id, :type => Hash
field :username, :type => String
field :title, :type => String
field :content, :type => String
field :display_content, :type => String