Adding button click counter in rails 3

问题

I want to add buttons on my article so that I can know the number of times its clicked and update counter on the database, I am using mongoid ,my model is:

class Article
  include Mongoid::Document
  include Mongoid::Timestamps
  field :title, :type => String
  field :content, :type => String
  field :likes, :type => Integer ,:default => 0
  field :dislikes, :type =>Integer, :default => 0
  field :spam, :type => Integer, :default => 0
end

My articles show controller is:

  def show
    @article = Article.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render :json => @article }
    end
  end

My View for show is:

<p id="notice"><%= notice %></p>

<p>
  <b>Title:</b>
  <%= @article.title %>
</p>

<p>
  <b>Content:</b>
  <%= raw @article.content %>
</p>

Likes : <%= @article.likes %>  <br/>
Dislikes : <%= @article.dislikes %><br/>
Spams : <%= @article.spam %><br/>


<%= link_to 'Edit', edit_article_path(@article) %> |
<%= link_to 'Back', articles_path %>

I find anything about it in internet.

How can I achieve it?

回答1:

The easiest thing to do would be add a click_count integer attribute to your Article model and then increment this in your controller code:

def show
  @article = Article.find(params[:id])
  @article.increment! :click_count

  respond_to do |format|
    format.html # show.html.erb
    format.json { render :json => @article }
  end
end

回答2:

i got it done, phew!

I added the following form in my show.html.erb:

<%=form_for(@article,:action=>"update") do |f| %>
<%= submit_tag "Like", :name=>"like"%>
<%= submit_tag "Dislike",:name=>"dislike"%>
<%= submit_tag "Spam",:name=>"spam" %>
<%end%>

and wrote the following update controller:

def update
    @article=Article.find(params[:id])
    if params[:like]
      @article.likes=@article.likes+1
    elsif params[:dislike]
      @article.dislikes=@article.dislikes+1
    elsif params[:spam]
      @article.spams=@article.spams+1
    end
    respond_to do |format|
      if @article.update_attributes(params[:article])
        format.html {redirect_to @article, :notice => "Article Updated"}
      else
        format.html {render :action=>"edit", :notice=> "Unable to update Article , sorry! :("}
      end
    end
  end

It worked like a charm.

来源：https://stackoverflow.com/questions/8681355/adding-button-click-counter-in-rails-3

标签

model-view-controller

ruby-on-rails-3.1

mongoid