初学ror，使用官方那个blog例子，卡在这里了，求指点。我用rails 3.1.3 - V2EX

初学ror，使用官方那个blog例子，卡在这里了，求指点。我用rails 3.1.3 - V2EX

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这是一个创建于 5131 天前的主题，其中的信息可能已经有所发展或是发生改变。

Showing /Users/Sites/blog/app/views/posts/show.html.erb where line #21 raised:

undefined ocal variable or method `comment' for #<#<Class:0x007fc394660120>:0x007fc394663aa0>
Extracted source (around line #21):

18: <% @post.comments.each do |commnet| %>
19: <p>
20: <b>Commenter:</b>
21: <%= comment.commenter%>
22: </p>
23: <p>
24: <b>Comment:</b>

5 条回复 1970-01-01 08:00:00 +08:00

1

iloveyou

OP

2012 年 1 月 17 日

posts model：

class Post < ActiveRecord::Base
validates :name, :presence => true
validates :title, :presence => true, :length => { :minimum => 5 }

has_many :comments
end

comments model:

class Comment < ActiveRecord::Base
belongs_to :post
end

2

iloveyou

OP

2012 年 1 月 17 日

posts model：

class Post < ActiveRecord::Base
validates :name, :presence => true
validates :title, :presence => true, :length => { :minimum => 5 }

has_many :comments
end

comments model:

class Comment < ActiveRecord::Base
belongs_to :post
end

3

pepsin

2012 年 1 月 17 日

21行那个comment没有对应的实例变量或者是方法吧?

4

goophy

2012 年 1 月 17 日 via iPhone

18: <% @post.comments.each do |commnet| %>
拼写错误 commnet -> comment

5

iloveyou

OP

2012 年 1 月 18 日

@goophy 我晕，我思索几天的问题啊，2b青年啊我

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