jekyll 服务错误：没有将 nil 隐式转换为字符串答案

【问题标题】：jekyll serve error: no implicit conversion of nil into Stringjekyll 服务错误：没有将 nil 隐式转换为字符串
【发布时间】：2023-04-09 06:30:01
【问题描述】：

我已经用这个错误搜索了 jekyll。jekyll 处理页面时似乎出现了 ruby 错误，但我根本不懂 ruby。

jekyll 版本 1.3.1

我什至重新安装了 ruby 和 jekyll，但结果没有改变。

更新：
在我将 jekyll 从 1.31 降级到 1.20 后，此错误消失了
注意：我的网站是用 jekyll 1.20 创建的，所以它不能用 1.3.1 构建？这是核心问题吗？

E:\GitHub\sample>jekyll serve --trace :

Configuration file: E:/GitHub/sample/_config.yml
            Source: E:/GitHub/sample
       Destination: E:/GitHub/sample/_site
      Generating... D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:127:in `join': no implicit conversion of nil int
o String (TypeError)
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:127:in `relative_path'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/page.rb:122:in `path'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:118:in `pagination_candidate?'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:77:in `block in template_page'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:76:in `select'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:76:in `template_page'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/generators/pagination.rb:17:in `generate'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:229:in `block in generate'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:228:in `each'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:228:in `generate'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/site.rb:38:in `process'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/command.rb:18:in `process_site'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/commands/build.rb:23:in `build'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/lib/jekyll/commands/build.rb:7:in `process'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/jekyll-1.3.1/bin/jekyll:97:in `block (2 levels) in <top (required)>'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:180:in `call'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:180:in `call'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/command.rb:155:in `run'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/runner.rb:402:in `run_active_command'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/runner.rb:78:in `run!'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/delegates.rb:7:in `run!'
        from D:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/commander-4.1.5/lib/commander/import.rb:10:in `block in <top (required)>'

更新测试样本
test repo
从 1.20 到 1.30 完美运行，从 1.3.1 到 1.4.3 崩溃。

【问题讨论】：

我降级到 1.3.0 并且问题对我来说也消失了。我一直在运行 1.4.2
当我有一个空白配置文件时，我个人遇到了这个问题。这是一个相关的 jekyll 错误报告：github.com/jekyll/jekyll/issues/1705
升级后我也遇到了这个问题。我发现我的一个页面有语法错误。
@Mithril 您能否将您的代码更新到 github 存储库，以便我们查看问题所在？
@Agis 你可以在github.com/kmithril/test 看到repo。我测试了最新的jekyll，但同样的错误。

标签： ruby jekyll

【解决方案1】：

您的ArchivePage#initialize 没有设置所需的属性。

来自Jekyll page.rb：

def initialize(site, base, dir, name)
  @site = site
  @base = base
  @dir  = dir
  @name = name

  self.process(name)
  self.read_yaml(File.join(base, dir), name)
end

在准备站点生成时，需要@dir 和@month 来确定页面的相对路径。在ArchivePage#initialize 中设置这两个属性，它将再次起作用。（用 1.3.1 测试）

【讨论】：