如何获得红宝石打印一个完整的追溯而不是截断的？ [英] How do I get ruby to print a full backtrace instead of a truncated one?

问题描述

当我收到异常时，通常来自调用堆栈的深处。当这种情况发生时，通常情况下，实际的违规代码行是隐藏的：

When I get exceptions, it is often from deep within the call stack. When this happens, more often than not, the actual offending line of code is hidden from me:

tmp.rb:7:in `t': undefined method `bar' for nil:NilClass (NoMethodError)
        from tmp.rb:10:in `s'
        from tmp.rb:13:in `r'
        from tmp.rb:16:in `q'
        from tmp.rb:19:in `p'
        from tmp.rb:22:in `o'
        from tmp.rb:25:in `n'
        from tmp.rb:28:in `m'
        from tmp.rb:31:in `l'
         ... 8 levels...
        from tmp.rb:58:in `c'
        from tmp.rb:61:in `b'
        from tmp.rb:64:in `a'
        from tmp.rb:67

那个... 8级... 截断造成我很大的麻烦。我没有太多的成功搜索这一个：如何告诉红宝石，我想要转储包括完整的堆栈？

That "... 8 levels..." truncation is causing me a great deal of trouble. I'm not having much success googling for this one: How do I tell ruby that I want dumps to include the full stack?

推荐答案

p>异常#backtrace有整个堆栈：

Exception#backtrace has the entire stack in it:

def do_division_by_zero; 5 / 0; end
begin
  do_division_by_zero
rescue => exception
  puts exception.backtrace
  raise # always reraise
end

（由Peter Cooper的 Ruby Inside 博客启发）

(Inspired by Peter Cooper's Ruby Inside blog)

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