Gravity Forms | Conditionally require certain form fields based on the page its on

gravity-forms-change-required-field-status-based-on-page.php

<?php
// Conditionally requiring (or un-requiring) certain Contact Form fields based on the page its on
// https://gist.github.com/spivurno/8481177
function fs_conditional_requirement( $form ) {

  	// homepage
	if ( is_page(15) ) {

		foreach( $form['fields'] as &$field ) {

		  	// Company field
			if( $field['id'] == 22 ) {
				$field['isRequired'] = false;
			}
		  // Project Type dropdown
			if( $field['id'] == 23 ) {
				$field['isRequired'] = false;
			}

		}
		return $form;
	}

    return $form;
}
add_filter( 'gform_pre_render_6', 'fs_conditional_requirement' );
add_filter( 'gform_pre_validation_6', 'fs_conditional_requirement' );