添加注释到 posts = undefined local variable or method `post' for

Question

你好，我遇到了这样的错误 undefined local variable or method 'post' for #<#<Class:0x007ffc40469ad0>:0x007ffc40461088>

我不明白，因为我在 post 中创建了一个名为 _comments.html.erb

的部分

<p class="text-center">Poster un commentaire</p>
      <%= simple_form_for [post, post.comments.new] do |f| %>
        <%= f.error_notification %>
        <%= f.input :content, label: "Commentaire"%>
        <%= f.submit "Envoyer", class: "btn btn-primary" %>
      <% end %>

它会像那样呈现 <% render 'comments' %>

未定义的方法在这一行<%= simple_form_for [post, post.comments.new] do |f| %>

模型 post 是 has_many :comments, dependent: :destroy

模特评论是belongs_to :user belongs_to :post

路线是资源：posts 做资源：类别资源：评论结束

评论控制器是

class CommentsController < ApplicationController

before_action :set_post

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

  if @comment.save
    flash[:success] = "You commented the hell out of that post!"
    redirect_to :back
  else
    flash[:alert] = "There is a problem with your comment"
    render root_path
  end
end

def destroy
  @comment = @post.comments.find(params[:id])

  @comment.destroy
  flash[:success] = "Comment deleted :("
  redirect_to root_path
end

private

def set_post
  @post = Post.find(params[:post_id])
end

def comment_params
  params.require(:comment).permit(:content, :post_id, :user_id)
end
end

非常感谢您的帮助。

Answer 1

尝试更新以下内容：

<%= simple_form_for [post, post.comments.new] do |f| %>

有了这个：

<%= simple_form_for [@post, @post.comments.new] do |f| %>

添加注释到 posts = undefined local variable or method `post' for

Add comments to posts = undefined local variable or method `post' for

methods

ruby-on-rails

ruby-on-rails-3