title: How to set a 0 result in meta_search before user pressing a search button
body: <p>I'm using a meta_search on my rails 3 app. By default (before pressing a search button) meta_search returns all elements of searching model. and I want to set 0 result before user pressing a search button or if search params is blank.</p>
  
  <p>I am using meta_search as follows:</p>
  
  <pre><code>def index
   @search = Article.search(params[:search])
    if params[:search].blank?
      @places = nil
    else
      @places = @search.all
    end
  end
  </code></pre>
  
  <p>What is the best way to set a 0 result if search params is blank ?</p>
  
  <p>Thanks </p>