https://legacy.forums.gravityhelp.com/topic/how-to-check-parameter-before-form-loads Gravity Support Forums Topic: How to check parameter before form loads en-US Wed, 08 Apr 2026 23:50:16 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/how-to-check-parameter-before-form-loads#post-34799 Thu, 08 Sep 2011 09:10:53 +0000 Chris Hajer 34799@https://legacy.forums.gravityhelp.com/ <p>Thanks again for posting your solution. </p> https://legacy.forums.gravityhelp.com/topic/how-to-check-parameter-before-form-loads#post-34795 Thu, 08 Sep 2011 06:48:46 +0000 craigedmonds 34795@https://legacy.forums.gravityhelp.com/ <p>[SOLVED]</p> <p>I have solved my issue by using the code below. I am tweaking the code more but thought I would update just to say I had found a solution, before anyone answers.</p> <pre><code>add_filter(&quot;gform_pre_render_8&quot;, &quot;services_check_serviceid_pre_form&quot;); function services_check_serviceid_pre_form($form){ //we need to check with the whmcs database for a valid service id as we only want to allow access to the form for clients who have have a valid and paid invoice //check if serviceid parameter exists and if not, redirect if(empty($_GET[&quot;serviceid&quot;])){ echo &#39;Sorry but there was an issue with your request&#39;; echo &#39;&lt;br&gt;&lt;br&gt;&#39;; echo &#39;Please contact &lt;a href=&quot;support@marbellaguide.com&quot;&gt;support@marbellaguide.com&lt;/a&gt; if you continue to receive this error&#39;; } else { $whmcsservicesid = $_GET[&quot;serviceid&quot;]; // some stuff here to verify the serviceid //if everything is okay, display the form echo &#39;Your Service Reference is: &#39; .$whmcsservicesid; return $form; } }</code></pre> https://legacy.forums.gravityhelp.com/topic/how-to-check-parameter-before-form-loads#post-34793 Thu, 08 Sep 2011 06:23:22 +0000 craigedmonds 34793@https://legacy.forums.gravityhelp.com/ <p>I want to pass a parameter to the GF EG: &amp;serviceid=999 and check against another database for the serviceid.</p> <p>If the serviceid is valid then we can load the form, if not, then we need to redirect to another page.</p> <p>Probbaly I will need to use a hook for this but which one? </p>