Ruby on Rails 3，创建新对象时出现语法错误

Question

我仍在学习 Ruby，并且仍在从我的手册中复制粘贴。但是我遇到了一个问题，我不知道如何解释以及我做错了什么。所以这里是: 我想用这个创建一个新对象:

second_page = Page.new ( :name=>"Second page", :position=>1, :permalink => "second" )

我得到一个错误:

Loading development environment (Rails 3.0.10)
ruby-1.9.2-p290 :001 > second_page = Page.new ( :name=>"Second page", :position=>1, :permalink => "second" )
SyntaxError: (irb):1: syntax error, unexpected tASSOC, expecting ')'
...econd_page = Page.new ( :name=>"Second page", :position=>1, ...
...                               ^
(irb):1: syntax error, unexpected ',', expecting $end
...age.new ( :name=>"Second page", :position=>1, :permalink => ...
...                               ^
        from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:44:in `start'
        from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands/console.rb:8:in `start'
        from /usr/local/rvm/gems/ruby-1.9.2-p290/gems/railties-3.0.10/lib/rails/commands.rb:23:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

但是，如果我这样做:

ruby-1.9.2-p290 :002 > second_page = Page.new  :name=>"Second page", :position=>1, :permalink => "second"
 => #<Page id: nil, subject_id: nil, name: "Second page", permalink: "second", position: 1, visible: false, created_at: nil, updated_at: nil>

这似乎行得通。 我从手册中得到了示例，我想知道发生了什么事？ 没有 () 我不知道我该如何处理那个对象？ 谢谢

Answer 1

如果您选择放置空格，Ruby 不允许在圆括号前放置空格。这应该有效:

second_page = Page.new( :name=>"Second page", :position=>1, :permalink => "second" )