ruby – 如何以编程方式使用Rugged创建提交？

require 'rugged'
# Create an instance of the existing repository
repo = Rugged::Repository.new('/full/path/to/repo')
# grab the current Time object for now
curr_time = Time.now
# write a new blob to the repository,hang on to the object id
oid = repo.write("Some content for the this blob - #{curr_time}.",'blob')
# get the index for this repository
index = repo.index
# add the blob to the index
index.add(:path => 'newfile.txt',:oid => oid,:mode => 0100644)
curr_tree = index.write_tree(repo)
curr_ref = 'HEAD'
author = {:email=>'email@email.com',:time=>curr_time,:name=>'username'}
new_commit = Rugged::Commit.create(repo,:author => author,:message => "Some Commit Message at #{curr_time}.",:committer => author,:parents => [repo.head.target],:tree => curr_tree,:update_ref => curr_ref)

我得到的当前错误说index.add行有问题.它说TypeError：错误的参数类型为nil(预期的Fixnum).

任何帮助更好地理解如何创建一个坚固的新提交将非常感激.

更新

我刚刚通过运行gem install –prerelease rugged将Rugged 0.16.0更新为Rugged 0.18.0.gh.de28323.我上面详述的代码现在似乎有效.我不确定为什么它不适用于0.16.0.这个人似乎有同样的问题,他们在this answer详述.