Hide If Logged In/Out -- Gravity Forms

hilio-gf.php

<?php

/**
 * Filter out the html for fields if they should be hidden from users logged in or out.
 */
function _avm_dym_gform_field_content( $content, $field, $value, $zero, $form_id ) {
	if( is_admin() )
		return $content;
	if( !empty( $field['hideIfLoggedIn'] ) && is_user_logged_in() )
		return '';
	if( !empty( $field['hideIfLoggedOut'] ) && !is_user_logged_in() )
		return '';
	return $content;
}

/**
 * Determine if there are any hidden fields that need to be filled in.
 */
function _avm_gforms_filter_for_validation() {
	if( isset( $_POST['gform_submit'] ) ) {
		$form = RGFormsModel::get_form_meta( $_POST['gform_submit'] );
		$form = RGFormsModel::add_default_properties( $form );
		if( !isset( $form['fields'] ) || !is_array( $form['fields'] ) || empty( $form['fields'] ) )
			return;
		foreach( $form['fields'] as $field ) {
			if( !$field['isRequired'] || ( empty( $field['hideIfLoggedIn'] ) && empty( $field['hideIfLoggedOut'] ) ) )
				continue;
			if( !empty( $field['hideIfLoggedIn'] ) && is_user_logged_in() )
				_avm_validate_logged_in( $field );
			elseif( !empty( $field['hideIfLoggedOut'] ) && !is_user_logged_in() )
				_avm_validate_logged_out( $field );
		}
	}
}

/**
 * Fill in fields for logged in users
 */
function _avm_validate_logged_in( $field ) {
	$user = wp_get_current_user();
	$_POST['input_' . $field['id']] = '-';
	switch( RGFormsModel::get_input_type( $field ) ) {
		case 'name':
			if( $field["nameFormat"] != "simple" ) {
				$_POST['input_' . $field['id'] . '_3'] = empty( $user->first_name ) ? '-' : $user->first_name;
				$_POST['input_' . $field['id'] . '_6'] = empty( $user->last_name ) ? '-' : $user->last_name;
			}
			break;
		case 'email':
			$_POST['input_' . $field['id']] = $user->user_email;
			if( rgget( "emailConfirmEnabled", $field ) )
				$_POST['input_' . $field['id'] . '_2'] = $user->user_email;
			break;
	}
	if( !empty( $field['defaultValue'] ) )
		$_POST['input_' . $field['id']] = GFCommon::replace_variables_prepopulate( $field['defaultValue'] );
}

/**
 * Fill in fields for logged out users
 */
function _avm_validate_logged_out( $field ) {
	$_POST['input_' . $field['id']] = '-';
	switch( RGFormsModel::get_input_type( $field ) ) {
		case 'name':
			if( $field["nameFormat"] != "simple" ) {
				$_POST['input_' . $field['id'] . '_3'] = '-';
				$_POST['input_' . $field['id'] . '_6'] = '-';
			}
			break;
		case 'email':
			$_POST['input_' . $field['id']] = 'n' . time() . rand( 0, 99 ) . '@example.com';
			if( rgget( "emailConfirmEnabled", $field ) )
				$_POST['input_' . $field['id'] . '_2'] = $_POST['input_' . $field['id']];
			break;
	}
	if( !empty( $field['defaultValue'] ) )
		$_POST['input_' . $field['id']] = GFCommon::replace_variables_prepopulate( $field['defaultValue'] );
}

/**
 * Add checkboxes to the 'advanced' settings tab for each field in the gravity forms admin area.
 */
function _avm_gform_field_advanced_settings( $id, $form ) {
	if( $id != -1 )
		return;

	?>
	<li>
		<label><input type="checkbox" value="1" id="avmHideIfLoggedIn" onclick="SetFieldProperty('hideIfLoggedIn',this.checked);" />Hide this field if the user is logged in</label>
		<label><input type="checkbox" value="1" id="avmHideIfLoggedOut" onclick="SetFieldProperty('hideIfLoggedOut',this.checked);" />Hide this field if the user is logged out</label>
	</li>
	<?php
	add_action( 'admin_footer', '_avm_handle_field_settings' );
}

/**
 * Add javascript to hook into gravity forms' form update code and update the hide if logged in/out values.
 */
function _avm_handle_field_settings() {

	?>
	<script>
		jQuery(document).ready(function($){
			$(document).bind('gform_load_field_settings',function(event, field, form){
				var hili = (undefined === field.hideIfLoggedIn) ? false : (true === field.hideIfLoggedIn),
				hilo = (undefined === field.hideIfLoggedOut) ? false : (true === field.hideIfLoggedOut);
				$('#avmHideIfLoggedIn')[0].checked = hili;
				$('#avmHideIfLoggedOut')[0].checked = hilo;
			});
		});
	</script>
	<?php
}

add_filter( 'gform_field_content', '_avm_dym_gform_field_content', 10, 5 );
add_action( 'init', '_avm_gforms_filter_for_validation' );
if( is_admin() )
	add_action( 'gform_field_advanced_settings', '_avm_gform_field_advanced_settings', 10, 2 );