acts_as_commentable 在每則網址下面留言

使用者可以在每則網址下面留言 https://github.com/jackdempsey/acts_as_commentable

gem 'acts_as_commentable'

rails g comment

rake db:migrate

1.新增 CommentsController

class CommentsController < ApplicationController



 def create

  @link = Link.find(params[:link_id])

  comment = Comment.new( :title => "", :comment => params[:comment][:comment])

  if current_user != nil

   comment.user_id = current_user.id

  end

  logger << params[:comment]

  @link.add_comment comment



  redirect_to root_path

 end

end

:comment => params[:comment][:comment])  這邊這樣用是因為 view 用simple_form_for 後來帶過來的是 comment={comment={msg}}                                  之後再研究看看正常寫法 

2. view

<%= simple_form_for(@comment, :url => comments_path(@comment, :link_id => link )) do |f| %>

 <div>

   <%= f.input :comment , :label => "--" %>

   <%= f.button :submit , :class => "btn btn-info"%>

 </div>

<% end %>