CODEWITHSUNDEEP
ruby-on-rails
Cyber
Cyber

Reputation: 5000

Incrementing Values in Rails 3 using link_to

i want to update viewcount value in Posts table when user click the "like" link in post........

model

class Post < ActiveRecord::Base
  belongs_to :user
  has_many :answers
  attr_accessible :acceptedanswerid, :body, :userid, :tag, :title, :viewcount, :vote, :anscount
  validates_presence_of :title ,:body ,:tag
  scope :unanswered, where(:anscount => 0)
  scope :byvote, where(:vote=>maximum("vote"))
end

controller

post_controller.rb

   class PostController < ApplicationController
  def index
   @post=Post.new
   @answer=Answer.new
   @anscomment=Anscomment.new
   @posts=(Post.all).reverse
   @posts1=Post.all(:limit => 5 ,:order => "id desc")
   @unanswered = Post.unanswered
   @byvote=Post.byvote
   #fid=params[:fid]
   session[:flag]=nil
   fid=params[:fid]
   session[:flag]=fid
  end

  #def new
   # @post=Post.new
 # end

  def create
  # @post=Post.new(params[:post])
   @post=Post.new(params[:post])
   respond_to do |format|
   if @post.save
      #if (session[:flag!=nil])
      #session[:flag]=1
      #end
      format.html { redirect_to :controller=>"post" ,:action=>"index" }
     format.json { render json: @post, status: :created, location: @post }
     #redirect_to :controller=>"post" ,:action=>"index"
    else
     #session[:flag]=3
     format.html { redirect_to :controller=>"home" ,:action=>"index" }
     format.json { render json: @post, status: :created, location: @post }
     #redirect_to :controller=>"post" ,:action=>"index"
   end  
  end
  end

  def show
    id=params[:id]
    @post = Post.find(params[:id])
    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @post }
    end
  end

        def vote
             vcount = User.find(params[:id])
             vcount.update_attribute(:viewcount, vcount.viewcount + 4)
          end
end

view

views/post/show.html.erb

<table align=center width="60%" bordercolor="black" >

    <tr>
        <td align="center">
            <h2>
                <%[email protected]%> 
            </h2>
        </td>
    </tr>
    <tr>
        <td align="center" width="60">
            <h3><%[email protected]%></h3>
        </td>
    </tr>
    <tr>
        <td align="center">
            This Post comes under:<%[email protected]%>
        </td>
    </tr>
    <tr >
        <td align="right">
            <%[email protected] %>
            <%if id==nil %>
            <%id='15'%>
            <%end%>
            <%@user=User.find(id)%>
            posted by:<%[email protected]%> <p>on <%[email protected]_at%></p>
            <%id=nil%>
            <h1 align="left"><%[email protected]%></h1>
            <!--<%Post.increment_counter(:viewcount,@post.id) %>-->
            <%= link_to "like", {:controller => "post", :action => "vote", :id => @post.id } %>
        </td>
    </tr>

</table>

when i click the "like" the like link i am getting an error like-----Couldn't find Post with id=vote

*application trace: * app/controllers/post_controller.rb:42:in `show'

plz help me finding the error.......

Upvotes: 0

Views: 306

Answers (1)

Yuri Barbashov
Yuri Barbashov

Reputation: 5437

i think it happens because in your routes.rb file /post/:id is before :controller/:action:/:id, so u have to create named route for this action.

resources :posts do
  get 'vote', on: member
end

and the use path helper vote_post_path(post)

http://guides.rubyonrails.org/routing.html

Upvotes: 1

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