title: How to add 'select one...' to options_from_collection_for_select
body: <p>Below is my select-form that works properly.</p>
  
  <p>When the user loads the page it shall show an initial ‘select one...’ with value null or ‘’.</p>
  
  <p>I tried to add it to the Object but wasn’t able to and would be glad to get help!</p>
  
  <p>Thanks a lot!</p>
  
  <hr>
  
  <p><strong>In my view:</strong></p>
  
  <pre><code>= select_tag 'incident[fault_id]' , options_from_collection_for_select( Fault.all, :id, :label)
  </code></pre>
  
  <p>I use Rails 3.2 and HAML</p>
  
  <hr>
  
  <p><strong>Update:</strong></p>
  
  <p>By chance I found something really sweet:</p>
  
  <pre><code>include_blank: 'select one...'
  </code></pre>
  
  <p>or completely</p>
  
  <pre><code>= f.collection_select :fault_id, Fault.order(:label), :id, :label, include_blank: 'select one...'
  </code></pre>
  
  <p>In case one likes that too...</p>
  
  <p>Reference: <a href="http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html" rel="noreferrer">http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html</a></p>