agged_with(params[:skill]) ArgumentError: wrong number of arguments (given 2, expected 1)

Question

我在 Rails 5 beta 3 中对 gem acts-as-taggable-on 有疑问。

project.rb :

class Project < ActiveRecord::Base       
  acts_as_taggable
  acts_as_taggable_on :skills
end

routes.rb

get 'tags/:skill', to: 'projects#index', as: :skill

projects_controller.rb:

class ProjectsController < ApplicationController
  def index
    if params[:category] && Category.exists?(params[:category])
      @category = Category.find(params[:category])
      @projects = @category.projects.order("projects.created_at DESC")    
    elsif params[:skill]
      @projects = Project.tagged_with(params[:skill])
    else  
      @projects = Project.all
    end

    @categories = Category.all
  end
end

在线 @projects = Project.tagged_with(params[:skill]) 我收到以下错误：

ArgumentError: wrong number of arguments (given 2, expected 1) from /usr/local/rvm/gems/ruby-2.3.0/gems/activerecord-5.0.0.beta3/lib/active_record/sanitization.rb:8:in `sanitize'

Answer 1

看起来 tagged_with 正在内部调用 quote_value，这是 sanitize 的 alias_method。

sanitize 只需要一个参数，但 tagged_with 调用 quote_value 有两个参数，这就是问题所在。

参考acts_as_taggable, ActiveRecord::Sanitization和 commit 引入了此更改。

Answer 2

他们解决了这个问题。从 Gemfile 中的 master 分支下载：

gem 'acts-as-taggable-on', :github => 'mbleigh/acts-as-taggable-on', :branch => 'master'