ruby-on-rails - ruby - File.open 和重命名后权限被拒绝

Question

我修改了一个文件，然后尝试重命名它并重命名他的目录。但是我得到一个权限被拒绝的错误。

这是我的代码:

# 1) Modify the xml file

Xml_file = "Directory/foo.xml"

begin
    contents = File.new(Xml_file).read
    $document = REXML::Document.new(contents)
    $document.root.elements["label"].text = "some text"  

    File.open(Xml_file, "w") do |data|
    data<<$document
end

ensure
    $document = nil
end

# 2) Then rename the file and the directory

old_name = Xml_file
new_name = "Directory/new_name.xml"
File.rename(old_name, new_name) # OK, this works !

old_dir = "Directory"
new_dir = "New_Directory"
FileUtils.mv(old_dir, new_dir) # Crash, saying "permission denied"

Answer 1

正如 an example in the documentation 中明确指出的那样, 应该添加

force: true

FileUtils.mv 选项，以防目标目录不存在。