【发布时间】：2020-07-26 08:09:37
【问题描述】：
我正在使用在线网站进行应用设计。我正在使用 ubuntu 进行 ruby on rails 安装。我试过运行这些命令：
rails new hello_WWW
cd hello_www
rails generate scaffold pioneer first_name:string last_name:string
一切正常。接下来，我运行rake db:migrate。但是，我收到此错误消息：
/root/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/actionpack-6.0.2.2/lib/action_dispatch/middleware/stack.rb:37: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
/root/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/actionpack-6.0.2.2/lib/action_dispatch/middleware/static.rb:110: warning: The called method `initialize' is defined here
rake aborted!
SyntaxError: /root/hello_WWW/db/migrate/20200413005922_create_pioneers.rb:4: syntax error, unexpected ':'
t.string : first_name
^
Tasks: TOP => db:migrate
(See full trace by running task with —trace)
有人可以帮我解决这些问题吗？
【问题讨论】：
标签： ruby-on-rails ruby ubuntu web-applications rake