self.search body Rails

In Rails I'm trying to create an additional Search field for a Articles project in which the 2nd search field searches the Articles Body and not the Title!

Look at the project here http://ift.tt/2d0H2pH

index.html.erb

    <div id="main">
     <%= form_tag articles_path, :method => 'get' do %>
      <%= text_field_tag :search, params[:search], class: "form-control", placeholder: "Search Title" %><br><div>
       <%= submit_tag "Search", :name => nil, class: "btn btn-success" %>
        <% end %>

     <%= form_tag articles_path, :method => 'get' do %>
      <%= text_field_tag :body, params[:body], class: "form-control", placeholder: "Search Body" %>
       <%= submit_tag "Search", :name => nil, class: "btn btn-success" %>
        <% end %>

Article.rb

    def self.search(query)
     # where(:title, query) -> This would return an exact match of the query
       where("title like ?", "%#{query}%")
    end

ArticlesController.rb

    def index

     @articles = Article.all
     @markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML)

    # Adding search feature for Title.
      if params[:search]
         @articles = Article.search(params[:search]).order("created_at DESC")
      else
         @articles = Article.all.order('created_at DESC')
      end
    end

I've searched through these Stack Posts but can't seem to find an answer(I would have posted more but because my reputation is low I can only post two links.)

Search in Rails ==> But it only talks about getting the search to work correctly for the title, no mention of the body

http://ift.tt/2d0Knom ==> This one sorta had what I was looking for but this is more about prices and other parameters, not simply searching for through another column of the row; searching Body instead of Title.

I've tried adding different methods to the Article.rb model, Articles_controller.rb, but I'm just shooting in the dark; any suggestions stack family?

Your help would be greatly appreciated! Thanks! =)