Ruby on rails 我应该在此表单中放置什么变量来编辑注释（Rails）？

我有两个模型：Post和Comment。Comment是Post的嵌套资源：

routes.rb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

我使用户能够编辑在“后期放映”视图中显示的评论：

posts/show.hmtl.erb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

comments/\u comment.html.erb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

此表格：

评论/\u form.html.erb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

添加注释：


|

用于在“显示”视图中创建注释

我需要另一个表单在新模板中编辑注释：

comments/edit.html.erb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

编辑注释

comments/form2.html.erb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

编辑注释：

不确定在此处放置什么：

<%= form_for(HERE) do |f| %>

有什么建议吗

编辑

评论\u controller.rb:

  resources :posts do
    resources :comments
  end

  <%= render @comments %>

<%= link_to "Edit Post Comment", edit_post_comment_path(@post, comment) %>

<h4>Add a comment:</h4>

<%= form_for([@post, @post.comments.build]) do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<% unless current_user == nil %>
  <% if current_user.id == @post.user_id %>
    <%= link_to 'Edit', edit_post_path(@post) %> |
  <% end %>
<% end %>
<%= link_to 'Back', posts_path %>

<h1>Edit comment</h1>

<%= render 'form2' %>

<%= link_to 'Back', posts_path %>

<h4>Edit comment:</h4>

<%= form_for() do |f| %>
  <div class="field">
    <%= f.label :content %><br />
    <%= f.text_area :content %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

<%= link_to 'Back', posts_path %>

class CommentsController < ApplicationController
  def show
    @comment = Comment.find(params[:id])
  end

  def new
    @comment = Comment.new
  end

  def edit
    @comment = Comment.find(params[:id])
  end

 def update
    @post = Post.find(params[:post_id])
    @comment = Comment.find(params[:id])
    @comment.update_attributes(params[:comment])
    redirect_to @post
  end

  def create
    @post = Post.find(params[:post_id])
    comment_attr = params[:comment].merge :user_id => current_user.id
    @comment = @post.comments.create(comment_attr)
    redirect_to post_path(@post)
  end
end

class CommentsControllercurrent\u user.id
@comment=@post.comments.create（comment\u attr）
将_重定向到post_路径（@post）
结束
结束

注释是嵌套的资源，这意味着注释始终与特定的帖子绑定。在编辑操作中，您将获得comment_id和post_id作为参数。您应该通过这些id加载评论和帖子。不要在表单中生成注释，以便在新建和编辑操作中重用表单。将您的表格更改为：

评论/_form.html.erb

<%= form_for([@post, @comment]) do |f| %>

def edit
  @comment = Comment.find(params[:id])
  @post = Post.find(params[:post_id])
end

并且在posts\u controller.rb中

def show
  @post = Post.find(params[:id])
  @comment = @post.comments.build
end

---

注释是嵌套的资源，这意味着注释总是绑定到特定的帖子。在编辑操作中，您将获得comment_id和post_id作为参数。您应该通过这些id加载评论和帖子。不要在表单中生成注释，以便在新建和编辑操作中重用表单。将您的表格更改为：

评论/_form.html.erb

<%= form_for([@post, @comment]) do |f| %>

def edit
  @comment = Comment.find(params[:id])
  @post = Post.find(params[:post_id])
end

并且在posts\u controller.rb中

def show
  @post = Post.find(params[:id])
  @comment = @post.comments.build
end