Add maximum age restriction to registration form

booking.admin.inc

@@ -74,12 +74,22 @@ function booking_admin() {
 	$form['attendee']['booking_max_dob'] = array (
 		'#type' => 'date_select',
 		'#title' => t('Maximum Date of Birth'),
-	'#description' => t("The most recent date of birth you wish to allow into the event."),		
+		'#description' => t("The youngest date of birth you wish to allow into the event."),		
 		'#default_value' => variable_get('booking_max_dob','1995-04-15 00:00:00'),
 		'#date_format' => 'd/m/Y',
 		'#date_label_position' => 'within',
 		'#date_year_range' => '-60:-10'
 		);
+		
+	$form['attendee']['booking_min_dob'] = array (
+		'#type' => 'date_select',
+		'#title' => t('Minimum Date of Birth'),
+		'#description' => t("The oldest date of birth you wish to allow into the event."),		
+		'#default_value' => variable_get('booking_min_dob','1995-04-15 00:00:00'),
+		'#date_format' => 'd/m/Y',
+		'#date_label_position' => 'within',
+		'#date_year_range' => '-60:-10'
+		);		
 	
 	$form['attendee']['booking_regn_limit'] = array (
 	'#type' => 'textfield',

booking.helper.inc

@@ -336,6 +336,43 @@ function _booking_max_dob_ts()
   return mktime(12, 0, 0, $max_dob_matches[2], $max_dob_matches[3], $max_dob_matches[1]);	
 }
 
+/**
+ * Helper function to calculate the year offset between the start of event and a 
+ *
+ * @param $datetime Date to compare from date_select field
+ * @return integer containing difference in years
+ */
+function _booking_year_offset($datetime)
+{
+	global $event;
+	
+	//set the time zone
+	date_default_timezone_set(date_default_timezone(FALSE)); 
+	$tz = new DateTimeZone(date_default_timezone(FALSE)); 
+
+	//try to load the date
+	try {
+		//$date = new DateTime(variable_get('booking_min_dob','1970-01-01 00:00:00'));
+		$date = new DateTime($datetime);
+	} catch (Exception $e) {
+		$date = new DateTime('1970-01-01 00:00:00');
+	}
+	
+	//set the timezone for the date
+	$date->setTimezone($tz);	
+	
+	//watchdog('booking', '<pre>DateTime of minimum DOB:\n @info </pre>', array('@info' => print_r( $date, true)));
+	
+	$reference_date = _booking_convert_ts($event->booking_event_start);
+	$difference = $date->diff($reference_date);
+	
+	//watchdog('booking', '<pre>DateTime of difference in minimum DOB to start of event:\n @info </pre>', array('@info' => print_r( $difference, true)));
+	
+	return $difference->y;
+	
+}
+
+
 /**
  * Helper function to calculate the average age in days, months and years at the start of the event
  */
@@ -369,6 +406,9 @@ function _booking_get_age_years($dob_ts)
 	return $dob->diff($reference_ts)->y;		
 }
 
+/**
+ * Helper function to create a string describing a date range
+ */
 function _date_range_to_string($date_start, $date_end) {
   $start = _booking_split_date($date_start);
   $end = _booking_split_date($date_end);

booking.regn_form.inc

@@ -49,26 +49,6 @@ function booking_register_page() {
 	return $return_array;
 }
 
-/**
- * Landing page after returning from paypal
- */
-function booking_payment_completed_page() {
-	//get some configuration information
-	global $event;
-	$output = "";  
-	$return_array = array();
-  
-  	//set the page title
-	$bookingTitle = !empty($event->booking_eventname) ? $event->booking_eventname : 'Event';
-	drupal_set_title($bookingTitle . ' Registration Completed');	
-  	
-	$output = token_replace(variable_get('booking_regn_completed_page'), booking_define_tokens());		
-	$return_array[] = array('paragraph' => array('#type' => 'markup', '#markup' => $output));	
-  
-	return $return_array;
-}
-
-
 function booking_form($node, &$form_state, $inserting = FALSE) {
 
 	global $event;
@@ -77,6 +57,12 @@ function booking_form($node, &$form_state, $inserting = FALSE) {
 	$partner_options = array(); 
 	date_default_timezone_set(date_default_timezone(FALSE)); 
 	
+	//calculate what years to show in the date of birth field
+	$min_dob_years = _booking_year_offset(variable_get('booking_min_dob','1970-01-01 00:00:00'));
+	$max_dob_years =  _booking_year_offset(variable_get('booking_max_dob','1970-01-01 00:00:00'));
+	$date_year_range = "-" . $min_dob_years . ':-' .  $max_dob_years;
+	
+	//determine whether loading saved node or form submission
 	if (!empty($node))
 	{
 		$data = $node;
@@ -93,11 +79,13 @@ function booking_form($node, &$form_state, $inserting = FALSE) {
     'legal_guardian' => 'Legal Guardian',
     'relative' => 'Close Relative');  
 
+		/*
 	$status_options[0] = t('Not Paid');
 	$status_options[1] = t('Booked In');
 	$status_options[2] = t('Waiting List');
 	$status_options[3] = t('No Longer Coming');
-
+*/
+		
   //figure out if we're in the earlybird rate section
 	$early = db_query("SELECT booking_earlybird_close FROM {booking_event} where eid = :eid", array(
 					':eid' => $event->eid))
@@ -158,8 +146,14 @@ function booking_form($node, &$form_state, $inserting = FALSE) {
 		'#date_format' => 'd/m/Y',
 		'#date_label_position' => 'within',
 		'#date_year_range' => '-50:-13'
+		//'#date_year_range' => $date_year_range,
 	);
 	
+	//override our generous date year range if this is a new form submission
+	if ($inserting == TRUE) {
+		$form['your-details']['booking_dob']['#date_year_range'] = $date_year_range;
+	}
+	
 	$form['your-details']['booking_payment_id'] = array(
 	 '#type' => 'select',
 	 '#title' => t('Choose your payment type'),
@@ -1265,3 +1259,24 @@ function _booking_form_submit_post_triggers($node) {
 	}
 	
 }
+
+
+/**
+ * Landing page after returning from paypal
+ */
+function booking_payment_completed_page() {
+	//get some configuration information
+	global $event;
+	$output = "";  
+	$return_array = array();
+  
+  	//set the page title
+	$bookingTitle = !empty($event->booking_eventname) ? $event->booking_eventname : 'Event';
+	drupal_set_title($bookingTitle . ' Registration Completed');	
+  	
+	$output = token_replace(variable_get('booking_regn_completed_page'), booking_define_tokens());		
+	$return_array[] = array('paragraph' => array('#type' => 'markup', '#markup' => $output));	
+  
+	return $return_array;
+}
+

booking.regn_node.inc

@@ -114,7 +114,7 @@ function booking_load($nodes) {
 		}
 	}
 	
-  	//watchdog('booking', 'Final loaded node: @info', array('@info' => var_export($nodes, TRUE)));			
+  	watchdog('booking', 'Final loaded node: @info', array('@info' => var_export($nodes, TRUE)));			
   // no return necessary since $nodes array members reference objects global to this function
 }