在rails中保存记录时出现couter_cache错误

Question

我在我的 rails 应用程序中尝试对项目进行投票时遇到错误。好像和计数器缓存有关。

错误

#<ArgumentError: wrong number of arguments (given 3, expected 1..2)>

error.backtrace

["/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/callbacks.rb:451:in `increment!'",
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/draper-4.0.1/lib/draper/automatic_delegation.rb:12:in `method_missing'", 
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/associations/belongs_to_association.rb:91:in `update_counters'", 
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/associations/belongs_to_association.rb:54:in `increment_counters'", 
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/counter_cache.rb:169:in `block in _create_record'", 
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/counter_cache.rb:192:in `block in each_counter_cached_associations'", 
"/Users/antarr/.rbenv/versions/3.0.1/lib/ruby/gems/3.0.0/gems/activerecord-6.1.3.2/lib/active_record/counter_cache.rb:191:in 

app/models/vote.rb

# == Schema Information
#
# Table name: votes
#
#  id           :bigint           not null, primary key
#  stance       :integer          default("Unsure")
#  votable_type :string
#  created_at   :datetime         not null
#  updated_at   :datetime         not null
#  user_id      :integer
#  votable_id   :integer
#
# Indexes
#
#  index_votes_on_user_id                      (user_id)
#  index_votes_on_votable_id_and_votable_type  (votable_id,votable_type)
#

class Vote < ApplicationRecord
  attr_accessor :get_verified

  enum stance: { 'Unsure' => 0, 'Yes' => 1, 'No' => 2 }

  belongs_to :user, counter_cache: true

  validates :user_id, uniqueness: { scope: %i[votable_type votable_id] }

  belongs_to :votable, polymorphic: true
  validates :votable, presence: true

  scope :verified, -> { where('user_id in ( select user_id from verifications )') }
  scope :yays, -> { where(stance: true) }
  scope :nays, -> { where(stance: false) }
  scope :undecided, -> { where(stance: nil) }
end

app/controllers/votes_controller.rb

class WeVote::VotesController < WeVoteController
  load_and_authorize_resource

  def create
    @vote.user = current_user_or_guest
    @vote.save!
    if @vote.get_verified == 'true'
      redirect_to new_verification_path
    else
      redirect_to request.referer
    end
  rescue ArgumentError => e
    byebug
    Rails.logger.error(e)
    redirect_to request.referer, notice: { alert: e }
  end

  def destroy
    @vote.destroy
    redirect_to request.referer
  end

private

  def vote_params
    params.require(:vote).permit(:votable_type, :votable_id, :stance, :get_verified)
  end
end

Answer 1

问题的关键是回溯的第二行，您可以在其中看到draper gem 正在拦截未知消息。

该特定方法正在寻找特定的调用，如果它不需要对其拦截的消息采取行动，它会尝试将它们引导回主应用程序。

不幸的是，这样做的方式与您的 Ruby 版本不兼容，我怀疑是版本 3。Ruby 对方法参数的内部处理在版本 2.x 和 3.x 以及发布版本之间发生了变化的 Draper 依赖于 2.x 实现。

This issue in the Draper repo 匹配您在代码库中看到的内容。

在正式修复发布之前，您可以更新您的 Gemfile 以直接指向 Draper 存储库而不是 cut gem 版本：

gem 'draper', github: 'drapergem/draper'