ruby-on-rails - ActionController::InvalidAuthenticityToken Controller 错误

Question

因此，在我尝试在我的 Rails 应用程序中实现 AJAX 评论后，我开始收到此错误:

ActionController::InvalidAuthenticityToken in CommentsController#create    

ActionController::InvalidAuthenticityToken

    def handle_unverified_request
      raise ActionController::InvalidAuthenticityToken
    end
  end
end

以下是相关文件中的所有代码:

评论 Controller .rb

class CommentsController < ApplicationController


  before_action :find_post

  def create  
    @comment = @post.comments.build(comment_params)
    @comment.user_id = current_user.id

    if @comment.save
      respond_to do |format|
        format.html { redirect_to root_path }
        format.js
      end
    else
      flash[:alert] = "Check the comment form, something went horribly wrong."
      render root_path
    end
  end

添加评论表单:

= form_for([post, post.comments.build], remote: true) do |f|
  = f.text_field :content, placeholder: 'Add a comment...', class: "comment_content", id: "comment_content_#{post.id}"

views/comments/create.js.erb

$('#comments_<%= @post.id %>').append("<%=j render 'comments/comment', post: @post, comment: @comment %>");
$('#comment_content_<%= @post.id %>').val('')

评论.rb

class Comment < ActiveRecord::Base
  belongs_to :user
  belongs_to :post
end

我不知道是什么导致了这个错误，因为它在引入 AJAX 之前运行良好。我在 stackoverflow 上查找了类似问题的答案，并在 comments_controller.rb 的顶部添加了 protect_from_forgery 无济于事。我没有得到 InvalidAuthenticityToken 错误，但相反，它给了我一个不同的错误:

NoMethodError in CommentsController#create

undefined method `id' for nil:NilClass

def create  
  @comment = @post.comments.build(comment_params)
  @comment.user_id = current_user.id #highlighted line

  if @comment.save
    respond_to do |format|

Answer 1

我的问题的解决方案是在 Controller 内的第一行:

skip_before_action :verify_authenticity_token, :only => [:create,:inquire_enterprise]

如您所见，我正在转义 2 个产生错误的操作。