Handles when contact_id exceeds greatest or least contact_id.

* will go to the closest contact_id, nice behavior.

js/reports.js

@@ -5,11 +5,33 @@ $(function(){
 	$.ajaxSetup({async:false});
 
 	var contact_id = $("#contact_id").text();
-		
+	
 	if (contact_id) {
 
 		$("table").attr("width","");
+		
+		// handle logic for previous and next buttons
+		//var prev, next;
+
 		var prev = Number(contact_id) - 1, next = Number(contact_id) + 1;
+		if (prev <= 0) {
+			prev = 1;
+		}
+		if (next === 0) {
+			next = 1;
+		}
+		
+		$.post("json/reports.php", { total: 1 }, function (data) {
+			var obj = $.parseJSON(data);
+
+			if (contact_id > obj.total) {
+				prev = obj.total;
+				next = obj.total;
+			} else if (contact_id === obj.total) {
+				next = obj.total;
+			}	
+		});		
+		
 		$(".stats-left").attr("href","/individual_history_log.php?contact_id=" + prev);
 		$(".stats-right").attr("href","/individual_history_log.php?contact_id=" + next);
 		

json/reports.php

@@ -14,6 +14,14 @@ $handler = PhpConsole\Handler::getInstance();
 $handler->start();
 */
 
+	// Return total contacts
+	if (isset($_POST['total'])) {	
+		$query = "SELECT COUNT(contact_id) AS total FROM contacts;";
+		$sql = mysql_query($query, $YBDB) or die(mysql_error());
+		$result = mysql_fetch_assoc($sql);
+		echo json_encode($result);
+	}
+
 	// Return name
 	if (isset($_POST['name'])) {
 		$query = "SELECT CONCAT(contacts.first_name, ' ', contacts.middle_initial, ' ',contacts.last_name) AS full_name 
@@ -63,9 +71,11 @@ $handler->start();
 									
 		$sql = mysql_query($query, $YBDB) or die(mysql_error());	
 		
+		
 		while ( $result = mysql_fetch_assoc($sql) ) {	
 			$results[] = $result;				
 		}	
+		
 		echo json_encode($results);