title: How to format f.submit with css, glyphicons, and symbol?
body: <p>How can we make this: <code>&lt;%= f.submit :conceal %&gt;</code> work with <code>&lt;span class="glyphicon glyphicon-plus"&gt;</code>, the word <code>Private</code>, and <code>class: "btn"</code>.</p>
  
  <p>Here were some attempts:</p>
  
  <pre><code>#This didn't make :conceal work
  &lt;%= button_tag(type: 'submit', class: "btn") do %&gt;
    &lt;% :conceal %&gt;&lt;span class="glyphicon glyphicon-plus"&gt;&lt;/span&gt; Private
  &lt;% end %&gt;
  
  #This stopped :conceal from working too
  &lt;%= f.submit "Private", class: "btn" do %&gt;
    &lt;% :conceal %&gt;
  &lt;% end %&gt;
  
  #This ignored the 2nd line despite, do
  &lt;%= f.submit :conceal, class: "btn" do %&gt;
    &lt;span class="glyphicon glyphicon-plus"&gt;&lt;/span&gt; Private
  &lt;% end %&gt;
  </code></pre>
  
  <p>In <strong>controller</strong>:</p>
  
  <pre><code>if (params[:commit] == 'conceal')
    @valuation.conceal = true
  end
  </code></pre>