Ruby on rails Rails：注释模型-连接到Micropost\u id和用户id

编辑

由于carlosramireziii帮助将表单更改为，路由错误已消失

<%= form_for (@micropost) do |f| %>
<%= fields_for :comments do |ff| %>
<%= ff.text_area :content %>
<% end %>
<div class="CommentButtonContainer">
<%= f.submit "Comment" %>
</div>
<% end %>

这是我的路线。eb

Project::Application.routes.draw do
  resources :microposts do
    resources :comments
  end

这是评论表

<%= form_for([@micropost, @micropost.comments.new]) do |f| %>
<%= f.text_area :content %>
<div class="CommentButtonContainer">
<%= f.submit "Comment" %>
</div>
<% end %>

<%= form_for(@micropost) do |f| %>
   <%= f.fields_for :comments do |ff %>
      <%= ff.text_area :content %>
   <% end %>          
   <div class="CommentButtonContainer">
      <%= f.submit "Comment" %>
   </div>
<% end %>

这是评论模板

<%= div_for comment do %> 
<div class='UserCommentContainer'>
<div class='UserComment'>
<div class='UserName sm'>
Anonymous
</div>
<div class='UserCommentText'>
<%= comment.content %>
</div>
</div>
</div>
<% end %>

匿名的

最后，这就是微柱中的内容

<div id='CommentContainer' class='Condensed2'>
<div class='Comment'>
<%= render "comments/form" %>
</div>
<div id='comments'>
<%= render @micropost.comments %>
</div>
</div>

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments
  accepts_nested_attributes_for :comments

  validates :user_id, presence: true
end

所有其他与我在下面发布的评论模型和控制器相关的内容，我已经考虑了很长时间，真的需要帮助，谢谢

评论模型

class Comment < ActiveRecord::Base
  attr_accessible :content
  belongs_to :micropost

  validates :content, presence: true, length: { maximum: 140 }
  validates :user_id, presence: true
  validates :micropost_id, presence: true

  default_scope order: 'comments.created_at DESC'
end

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments

  validates :user_id, presence: true
end

class User < ActiveRecord::Base
  has_many :microposts
  has_many :replies, :through => :microposts, :source => :comments
end

class注释

微成本模式

class Comment < ActiveRecord::Base
  attr_accessible :content
  belongs_to :micropost

  validates :content, presence: true, length: { maximum: 140 }
  validates :user_id, presence: true
  validates :micropost_id, presence: true

  default_scope order: 'comments.created_at DESC'
end

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments

  validates :user_id, presence: true
end

class User < ActiveRecord::Base
  has_many :microposts
  has_many :replies, :through => :microposts, :source => :comments
end

class Micropost

用户模型

class Comment < ActiveRecord::Base
  attr_accessible :content
  belongs_to :micropost

  validates :content, presence: true, length: { maximum: 140 }
  validates :user_id, presence: true
  validates :micropost_id, presence: true

  default_scope order: 'comments.created_at DESC'
end

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments

  validates :user_id, presence: true
end

class User < ActiveRecord::Base
  has_many :microposts
  has_many :replies, :through => :microposts, :source => :comments
end

class用户:microposts，：source=>:comments
结束

评论控制器

class CommentsController < ApplicationController 
  def create 
    @comment = @micropost.comments.new(params[:comment]) 
    if @comment.save 
      redirect_to @user
    else 
      redirect_to @user
    end 
  end 
end

class UsersController < ApplicationController
  def show
    @user = User.find(params[:id])
    @micropost = Micropost.new
    @comment = @micropost.comments.new
    @microposts = @user.microposts.paginate(page: params[:page])
  end
end

class CommentsController

用户控制器

class CommentsController < ApplicationController 
  def create 
    @comment = @micropost.comments.new(params[:comment]) 
    if @comment.save 
      redirect_to @user
    else 
      redirect_to @user
    end 
  end 
end

class UsersController < ApplicationController
  def show
    @user = User.find(params[:id])
    @micropost = Micropost.new
    @comment = @micropost.comments.new
    @microposts = @user.microposts.paginate(page: params[:page])
  end
end

class UsersController

我认为问题在于，您试图在尚未保存的

微柱上保存新的
注释。由于您的
注释
路径嵌套在
microspost
路径下，因此在创建新注释之前需要存在
microspost

如果要以相同的形式创建两个对象，则需要使用嵌套的模型属性

Micropost

<div id='CommentContainer' class='Condensed2'>
<div class='Comment'>
<%= render "comments/form" %>
</div>
<div id='comments'>
<%= render @micropost.comments %>
</div>
</div>

class Micropost < ActiveRecord::Base
  belongs_to :user
  has_many :comments
  accepts_nested_attributes_for :comments

  validates :user_id, presence: true
end

class Micropost

表格

<%= form_for([@micropost, @micropost.comments.new]) do |f| %>
<%= f.text_area :content %>
<div class="CommentButtonContainer">
<%= f.submit "Comment" %>
</div>
<% end %>

<%= form_for(@micropost) do |f| %>
   <%= f.fields_for :comments do |ff %>
      <%= ff.text_area :content %>
   <% end %>          
   <div class="CommentButtonContainer">
      <%= f.submit "Comment" %>
   </div>
<% end %>


谢谢你的建议，但是当添加
时，该字段消失，我无法发表评论。我实际上在f.fields\u中取出了f，出现了文本区域，但评论没有保存到microposting上