8

我曾经Rails scaffolding使用终端的命令制作模型：

rails generate scaffold Venue venueid:string, venueName:string, venueAddress:string, venueCity:string, venueState:string, venueZip:integer, venuePhone:string, venueAge:int

一切似乎都可以安装或生成，但是当我运行时rake db:migrate出现以下错误：

rake aborted!
/Users/Banderson/Documents/demo/db/migrate/20130202222224_create_venues.rb:5: syntax error, unexpected '\n'

      t.string, :venueName
^
org/jruby/RubyKernel.java:1062:in `require'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activesupport-3.2.10/lib/active_support/dependencies.rb:251:in `require'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activesupport-3.2.10/lib/active_support/dependencies.rb:236:in `load_dependency'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activesupport-3.2.10/lib/active_support/dependencies.rb:251:in `require'
/Users/Banderson/Documents/demo/db/migrate/20130202222224_create_venues.rb:537:in `load_migration'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:533:in `migration'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:528:in `migrate'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:720:in `migrate'
org/jruby/RubyProc.java:270:in `call'
org/jruby/RubyProc.java:220:in `call'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:775:in `ddl_transaction'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/transactions.rb:208:in `transaction'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:775:in `ddl_transaction'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:719:in `migrate'
org/jruby/RubyArray.java:1620:in `each'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:700:in `migrate'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:570:in `up'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/migration.rb:551:in `migrate'
/Users/Banderson/.rvm/gems/jruby-1.6.8/gems/activerecord-3.2.10/lib/active_record/railties/databases.rake:179:in `(root)'
org/jruby/RubyProc.java:270:in `call'
org/jruby/RubyProc.java:220:in `call'
org/jruby/RubyArray.java:1620:in `each'
org/jruby/RubyArray.java:1620:in `each'
org/jruby/RubyKernel.java:1087:in `load'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)

我做错了什么，或者我该如何解决？

4

1 回答 1

25

尝试

rails generate scaffold Venue venueid:string venueName:string venueAddress:string venueCity:string venueState:string venueZip:integer venuePhone:string venueAge:int

反而。您不应该在每个字段之间使用逗号。

使用逗号，您将在其中生成迁移：

create_table :venues do |t|
  t.string, :venueid
  t.string, :venueName
  t.string, :venueAddress
  t.string, :venueCity
  t.string, :venueState
  t.integer, :venueZip
  t.string, :venuePhone
  t.int :venueAge

  t.timestamps
end

如您所见，每个 t.string/integer/etc. 方法调用在给出任何参数之前有一个逗号，这是无效的。如果这样做：

puts, "hi"

我得到错误

syntax error, unexpected '\n', expecting tCOLON2 or '[' or '.'

这与您遇到的错误相似。

tldr：不要在生成器中使用逗号

于 2013-02-02T22:31:03.367 回答