我正在开发一个rake任务,用于更改控制器中定义的元标记。我找到了一些帮助here,但我仍然收到错误。当我尝试运行这个rake任务时,ruby不喜欢第11行,即第一行“found =”。我收到了这个错误。
rake aborted!
undefined local variable or method `line' for main:Object
/Users/********/lib/tasks/meta_tags.rake:11:in `block (2 levels) in <top (required)>'
这就是任务的样子。我很困惑为什么在前一行(10)上正确解释“line”,但是在11上爆炸。任何想法?
require 'rake'
namespace :meta_tags do
desc 'changes the meta tags'
task :update => :environment do
regex = /^@meta_tag/
found = false
file = File.open('app/controllers/site_controller.rb', 'w')
file.each_line |line|
replace_line(line) if(found)
found = true if(line =~ regex)
end
def replace_line(line)
meta_tags = MetaTag.all.map { |tag| tag["tag"] }
new_tag = meta_tags.sample(1)[0]
line = "@meta_tag = #{new_tag}"
end
end
答案 0 :(得分:2)
你忘了在你的迭代中添加do
...不确定它是否相关,但ruby解释器有时会抛出奇怪的错误:
file.each_line do |line|
replace_line(line) if(found)
found = true if(line =~ regex)
end
<强>更新强>
此外,您似乎需要关闭任务块:
require 'rake'
namespace :meta_tags do
desc 'changes the meta tags'
task :update => :environment do
regex = /^@meta_tag/
found = false
file = File.open('app/controllers/site_controller.rb', 'w')
file.each_line do |line|
replace_line(line) if(found)
found = true if(line =~ regex)
end
end
def replace_line(line)
meta_tags = MetaTag.all.map { |tag| tag["tag"] }
new_tag = meta_tags.sample(1)[0]
line = "@meta_tag = #{new_tag}"
end
end