title: wordpress form submission not working with custom permalinks
body: <p>I created a form with post method and action=" " in index.php of theme(Home page).<br></p>
  
  <pre><code>&lt;form name="filter" action="" method="post"&gt;
  </code></pre>
  
  <p>and I use custom permalink on <strong>/%postname%/</strong><br><br>
  but during submit form, my data not posting to home page.<br>
  and when I changed Wordpress permalinks to "Plain" (numeric post id) my submission post works fine and my data posted to home page. </p>