Question

如何调用注释+为在其下创建注释的特定帖子指定的用户信息。例如：

/articles/8

new comment created with user_id = 3

Page will show Username + comment + created_at

这是我目前的代码：

展后展示页

<%= @post.title %>
<%= render '/comments/form' %>    
<% @post.user.comments.reverse.each do |comment| %>
  <li>
    <%= comment.user.email %>
    <%= comment.comment %>
  </li>
<% end %>

我获取与评论相关的用户信息，但问题是，它列出了所有评论。例如，如何仅使用article_id为8进行注释。

后置控制器

def create
 @post = Post.new(post_params)
 @post.user = current_user
 if @post.save!
  flash[:notice] = "Successfully created..."
  redirect_to posts_path
 else
  flash[:danger] = "failed to add a post"
  render 'new'       
 end
end

def show
 @comment = Comment.new
 @comments = Comment.find(params[:id])
end

评论控制器

def create
 @post = Post.find(params[:post_id])
 @comment = @post.comments.build(comment_params)
 @comment.user = current_user

 if @comment.save
  flash[:notice] = "Successfully created..."
  redirect_to post_path(@post)
 else
  flash[:alert] = "failed"
  redirect_to root_path
 end
end

路线

resources :sessions, only: [:new, :create, :destroy]
resources :users
resources :posts do
 resources :comments
end

评论的架构

create_table "comments", force: :cascade do |t|
    t.text     "comment"
    t.integer  "user_id"
    t.integer  "post_id"
    t.datetime "created_at", null: false
    t.datetime "updated_at", null: false
  end

Answer 1

我假设您的模型看起来像

class Comments < ApplicationRecord
  belongs_to :user
  belongs_to :post
end
class User < ApplicationRecord
  has_many :posts
  has_many :comments
end
class Post < ApplicationRecord
  belongs_to :user
  has_many :comments
end

我们希望获得帖子的所有评论，以便我们可以做这样的事情

# Note that I took the user from this line 
<% @post.comments.reverse.each do |comment| %>
  <li>
  <%= comment.user.email %>
  <%= comment.comment %>
  </li>
<% end %>

我希望这应该有效。

从数据库中调用某些注释

1 个答案: