Gravity Support Forums Topic: Dynamically populate age

Gravity Support Forums Topic: Dynamically populate age https://legacy.forums.gravityhelp.com/topic/dynamically-populate-age Gravity Support Forums Topic: Dynamically populate age en-US Sat, 04 Apr 2026 03:26:48 +0000 http://bbpress.org/?v=1.0.1 <![CDATA[Search]]> q https://legacy.forums.gravityhelp.com/search.php Rob Harrell on "Dynamically populate age" https://legacy.forums.gravityhelp.com/topic/dynamically-populate-age#post-60636 Tue, 29 May 2012 11:47:35 +0000 Rob Harrell 60636@https://legacy.forums.gravityhelp.com/ Thanks for posting your solution! gingram815 on "Dynamically populate age" https://legacy.forums.gravityhelp.com/topic/dynamically-populate-age#post-60484 Sun, 27 May 2012 15:13:42 +0000 gingram815 60484@https://legacy.forums.gravityhelp.com/ Ok, I figured it out. Here is the code with comments for anyone who else who wants to do this. <pre><code>add_filter('gform_validation_2', 'find_age'); function find_age($validation_result) { // 2 - Get the form object from the validation result $form = $validation_result["form"]; // 3 - Get the current page being validated $current_page = rgpost('gform_source_page_number_' . $form['id']) ? rgpost('gform_source_page_number_' . $form['id']) : 1; // 4 - Loop through the form fields foreach($form['fields'] as &$field){ // 5 - If the field does not have our designated CSS class, skip it if(strpos($field['cssClass'], 'dob') === false) continue; // 6 - Get the field's page number $field_page = $field['pageNumber']; // 7 - Check if the field is hidden by GF conditional logic $is_hidden = RGFormsModel::is_field_hidden($form, $field, array()); // 8 - If the field is not on the current page OR if the field is hidden, skip it if($field_page != $current_page || $is_hidden) continue; // 9 - Get the submitted value from the $_POST $field_value = rgpost("input_{$field['id']}"); if(is_array($field_value)){ $field_value = implode('/', $field_value);}//turns the date array into a string $ageTime = strtotime($field_value); // Transform DOB from date format to timestamp $t = time(); // current timestamp $age = ($ageTime < 0) ? ( $t + ($ageTime * -1) ) : $t - $ageTime; $year = 60 * 60 * 24 * 365; $ageYears = $age / $year; $age= floor($ageYears); //this is calculated age foreach($form['fields'] as &$field2){ if(strpos($field2['cssClass'], 'age') === false) //loop through fields again to find the "Age" field continue; $field2["defaultValue"] = $age; //add calculated age as default value to "Age" field }} $validation_result['form'] = $form; //manipulate $validation_result with modified $form // 15 - Return the validation result return $validation_result; }</code></pre> You will need to edit your form so that the css class of your date-of-birth field is "dob" and your Age field is "age." gingram815 on "Dynamically populate age" https://legacy.forums.gravityhelp.com/topic/dynamically-populate-age#post-60483 Sun, 27 May 2012 14:02:43 +0000 gingram815 60483@https://legacy.forums.gravityhelp.com/ I am trying to dynamically populate a field called "Age" with the age of the person filling out the form based on the date of birth they already filled out. This is on a multi-page form. The DOB field is a date field on the 1st page. I placed the "Age" field on the second page so the DOB field will have to validate before seeing the "Age" field. It is important that this happens on validation, not on submission as I have a lot of conditional logic based on age. Here is my code which I placed in functions.php: <pre><code>add_filter("gform_pre_submission_filter_2", "age"); function age($form){ $ageTime = strtotime($_POST["input_5"]); // Get the person's birthday timestamp $t = time(); // current time $age = ($ageTime < 0) ? ( $t + ($ageTime * -1) ) : $t - $ageTime; $year = 60 * 60 * 24 * 365; $ageYears = $age / $year; $age= floor($ageYears); $form["fields"][6]["defaultValue"] = $age; //set default value of Age field to the calculated age return $form; }</code></pre> Nothing is showing up in the Age field when I run this at this point. What am I doing wrong?