https://legacy.forums.gravityhelp.com/topic/gform_username-bug Gravity Support Forums Topic: gform_username bug en-US Mon, 20 Apr 2026 03:22:36 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/gform_username-bug#post-81768 Wed, 17 Oct 2012 14:22:03 +0000 Alex Cancado 81768@https://legacy.forums.gravityhelp.com/ <p>It looks like you simply need to replace "input_12_41_3" with "input_41_3" and "input_12_41_6" with "input_12_41_6" from the original code you posted. Let me know if that doesn't do the trick. </p> https://legacy.forums.gravityhelp.com/topic/gform_username-bug#post-81581 Wed, 17 Oct 2012 00:51:28 +0000 phase00 81581@https://legacy.forums.gravityhelp.com/ <p>I've run in to a bit of a problem with <code>gform_username</code>. When I use the code provided on the documents: </p> <pre><code>add_filter(&#39;gform_username&#39;, &#39;auto_username&#39;); function auto_username($username){ $username = strtolower(rgpost(&#39;input_12_41_3&#39;) . rgpost(&#39;input_12_41_6&#39;)); if(empty($username)) return $username; if(!function_exists(&#39;username_exists&#39;)) require_once(ABSPATH . WPINC . &quot;/registration.php&quot;); if(username_exists($username)){ $i = 2; while(username_exists($username . $i)){ $i++; } $username = $username . $i; }; return $username; }</code></pre> <p>When I submit the form, the field I set as "username" from the user registration always returns a validation error stating "username must not be empty" (or something to that effect). This happened for any field I set as "username". If I changed the $_POST["input_42"] == 'some random string'; it still broke. Upon commenting the above code, the form worked perfectly fine. So it leads me to believe there's an issue with the function (I haven't dug in to the code).</p> <p>As a work-around I created a hidden field called uid which I set as the "username". I had to pre-populate this field via <code>gform_field_value_uid</code> so it was not empty, then use a <code>gform_pre_submission</code> to repopulate the uid <code>$_POST</code> value to what I wanted the username to actually be.</p> <pre><code>add_action(&quot;gform_pre_submission&quot;, &quot;populate_username&quot;); function populate_username($form){ $_POST[&quot;input_42&quot;] = $_POST[&quot;input_41_3&quot;] . $_POST[&quot;input_41_6&quot;]; // input_41_3 &amp; input_41_6 are first &amp; last name based on advanced name field. } add_filter(&quot;gform_field_value_uid&quot;, &quot;populate_uid&quot;); function populate_uid($value){ return md5(rand_string(20)); }</code></pre>