为什么`binding.pry`在错误的地方停止?

时间:2015-01-26 12:29:51

标签: ruby-on-rails ruby debugging pry-rails

由于某些原因,当我使用binding.pry设置断点时,程序最终会停在一个完全不同的(并且看起来像外星人!)的位置。我做错了吗?

Gemfile(缩写)

gem "rails", "~> 4.1"
gem "pry"
gem "pry-rails"
gem "pry-doc"
gem "pry-stack_explorer"
gem "pry-byebug"

方案

断点:

class SomeController < Application controller
  before_filter :filter
  ...
  def filter
    assignment = SkillAssignment.where(day: selected_date).first

    if assignment
      @day_skill = assignment.skill
      @day_description = @day_skill.description
    end

    binding.pry
  end
end

我降落的地方(使用show-source):

[1] pry(ActiveSupport::Callbacks::Filters::Before)> show-source

From: /home/yan-foto/workspaces/my-app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.0/lib/active_support/callbacks.rb @ line 156:
Owner: #<Class:ActiveSupport::Callbacks::Filters::Before>
Visibility: private
Number of lines: 16

def self.halting(next_callback, user_callback, halted_lambda, filter)
  lambda { |env|
    target = env.target
    value  = env.value
    halted = env.halted

    unless halted
      result = user_callback.call target, value
      env.halted = halted_lambda.call(target, result)
      if env.halted
        target.send :halted_callback_hook, filter
      end
    end
    next_callback.call env
  }
end

1 个答案:

答案 0 :(得分:2)

感谢@Manuel和@Anthony我现在知道这个问题是由bug中的pry-byebug引起的。不幸的是,这似乎不会在mentioned by the developer in GitHub

之后立即修复
  

目前的情况是我几乎没有使用过撬棍,所以我觉得   我没有使用mantain软件的动力不足。 :(

如果你想在结尾处有binding.pry,一个简单的解决方法就是写下这样的东西:

def myMethod
  # magic
  binding.pry
  1 + 1
end