ArticlesController 中的 NameError#create undefined local variable or method `article_params' for #<ArticlesController:Did you mean? article_path

Question

我在创建文章时遇到此错误：

错误：ArticlesController 中的名称错误#create 未定义的局部变量或方法 `article_params' for # Did you mean? article_path

错误图片：

我的代码：

class ArticlesController < ApplicationController
  def new
    @article = Article.new
  end

  def create
    @article = Article.new(article_params)
    if  @article.save
      flash[:notice] = "Article was submitted succsefully"
      redirect_to (@article)
    else
      render :new
    end

    private

    def article_params
      params.require(:article).permit(:title, :description)
    end
  end
end

Answer 1

将文章参数放在创建之外

class ArticlesController < ApplicationController

   def new
     @article = Article.new 
   end

   def create
     @article = Article.new(article_params)
     if  @article.save
       flash[:notice] = "Article was submitted succsefully"
       redirect_to (@article)
     else
       render :new
     end 
   end

  # this is show method
  def show
    @article = Article.find(params[:id])
  end

    private 
    def article_params 
       params.require(:article).permit(:title, :description)
    end
end 

Answer 2

我认为创建操作没有正确关闭，因此在创建操作中有 article_params 方法，删除最后一行的 'end' 并添加一个 'end' 到创建操作，它是一个语法错误。像这样

class ArticlesController < ApplicationController
  def new
    @article = Article.new
  end

      def create
        @article = Article.new(article_params)
        if  @article.save
          flash[:notice] = "Article was submitted succsefully"
          redirect_to (@article)
        else
          render :new
        end
        end

        private
        def article_params
          params.require(:article).permit(:title, :description)
        end
      end