This completes the interest survey logic.

1).  In confs, update works well, delete has an issue with on delete cascade.
2).  Saves state properly.  Now just need to create a front-end to query for volunteer organizers.

Connections/database_functions.php

@@ -67,7 +67,7 @@ $volunteer_interests = array(
 									"Publicizing/Outreach", "Graphic Design", "Greeter at the Front Desk",
 									"Accounting/Record Keeping", "Ordering parts/supplies", "Picking up Donated Bikes/Parts",
 									"Teaching classes", "League Certified Instructor", "Pricing bikes",
-									"Fabricating", "Open Source Programming", "Other/Contact me for general help"
+									 "Fabricating", "Open Source Programming", "Other/Contact me for general help"
 								);
 								
 // Provide a comment box - true of false
@@ -99,7 +99,6 @@ define("VOLUNTEER_INTEREST_COMMENTS", true);
 //
 //$volunteer_interests_deletename = array("LCI");
 
-
 /***********
 TRANSACTIONS
 ************/

contact_add_edit.php

@@ -3,11 +3,11 @@
 require_once('Connections/YBDB.php'); 
 require_once('Connections/database_functions.php');
 
-/*
+
-require_once('php-console/src/PhpConsole/__autoload.php');
+/*require_once('php-console/src/PhpConsole/__autoload.php');
 $handler = PhpConsole\Handler::getInstance();
-$handler->start();
+$handler->start();*/
-*/
+
 
 $waiver = WAIVER;
 $email_list = EMAIL_LIST;
@@ -116,22 +116,23 @@ if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {
 	$Result1 = mysql_query($updateSQL, $YBDB) or die(mysql_error());
 
 	// Are there any interests in the datatbase?
-	$sql = "SELECT option_name FROM options;";	
+	$interests = [];
+	$sql = "SELECT option_name, option_name_id FROM options;";	
 	$query = mysql_query($sql, $YBDB) or die(mysql_error());
 	while ($result = mysql_fetch_assoc($query)) {
-		$interests[] = $result["option_name"];		
+		$interests[$result["option_name"]] = $result["option_name_id"];		
 	}	
-	$interests = array_combine($interests,$interests);
 	
 	if ($volunteer_interest_form && !isset($volunteer_interests_changename)) {
 				
 		// populate database with user defined interests if they do not exist
 		$volunteer_interest = array_combine($volunteer_interests,$volunteer_interests);		
 		
+		$c = 0;
 		foreach ($volunteer_interest as $interest) {
 			// Insert new interest
-			if ( !$interests[$interest] ) {
+			if ( is_null($interests[$interest]) ) {
-				$query = "INSERT INTO options (option_name) VALUES ('" . $interest . "');";				 
+				$query = "INSERT INTO options (option_name) VALUES('" . $interest . "');";				 
 				$result = mysql_query($query, $YBDB) or die(mysql_error());
 			}	
 		}	
@@ -142,7 +143,7 @@ if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {
 	if( isset($volunteer_interests_changename) ) {
 		foreach ($volunteer_interests_changename as $key => $interest) { 
 			$sql = "UPDATE options SET option_name='" . $interest . 
-						"' WHERE option_name='" . $interests[$key] . "';";	
+						"' WHERE option_name='" . $key . "';";	
 			$query = mysql_query($sql, $YBDB) or die(mysql_error());
 		}
 	} else if( isset($volunteer_interests_deletename) ) {
@@ -160,16 +161,29 @@ if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {
     	}
  	}
 
-	foreach ($interests as $interest) {
+	// Find out if any selections are in the database, 
+	// to decide whether an INSERT or DELETE needs to be done
+	$sql = "SELECT selection FROM selections;";	
+	$query = mysql_query($sql, $YBDB) or die(mysql_error());
+	$selections = [];
+	while ($result = mysql_fetch_assoc($query)) {
+		$selections[$result["selection"]] = $result["selection"];		
+	}	
 	
-		if($interest_checked[$interest]) {
+	foreach ($interests as $selection => $interest_id) {
-			$sql = "UPDATE options SET option_value=1 WHERE option_name='" . $interests[$interest] . "';";	
+		if ( is_null($selections[$interest_id]) ) {  //INSERT
-			$query = mysql_query($sql, $YBDB) or die(mysql_error());		
+			if( !is_null($interest_checked[$selection]) ) {
-		} else {
+				$sql = "INSERT INTO selections (contact_id, selection, selection_value) 
-			$sql = "UPDATE options SET option_value=0 WHERE option_name='" . $interests[$interest] . "';";	
+							VALUES (" .	$_POST['contact_id'] . ",'" . $interest_id . "',1);";			 
-			$query = mysql_query($sql, $YBDB) or die(mysql_error());			
+				$result = mysql_query($sql, $YBDB) or die(mysql_error());	
+			}
+		} else {	 //DELETE
+			if( is_null($interest_checked[$selection]) ) {		
+				$sql = "DELETE FROM selections WHERE selection=" . $interest_id . 
+						  " AND contact_id=" . $_POST['contact_id'] . ";";	
+				$query = mysql_query($sql, $YBDB) or die(mysql_error());		
+			}
 		}		
-		
 	}
 	 	
 
@@ -289,6 +303,14 @@ $totalRows_Recordset1 = mysql_num_rows($Recordset1);
 					<table>
 						<tr><td>&nbsp;</td></tr>
 						<?php 
+							$sql = " SELECT options.option_name AS selection FROM selections, options 
+										WHERE selections.selection=options.option_name_id;";	
+							$query = mysql_query($sql, $YBDB) or die(mysql_error());
+							$selections = [];
+							while ($result = mysql_fetch_assoc($query)) {
+								$selections[$result["selection"]] = $result["selection"];		
+							}	
+
 							$columns = 3;
 							$c = 0;
 							$rows = 0;
@@ -298,9 +320,16 @@ $totalRows_Recordset1 = mysql_num_rows($Recordset1);
 								
 								for($i = $rows - $columns; $i < $rows; $i++) {
 									if($volunteer_interests[$i]) {
-										echo "<td><input name='interest_checkboxes[]' class='interest_checkboxes' 
+										
-														value='$volunteer_interests[$i]' type='checkbox'>" . 
+										if($volunteer_interests[$i] === $selections[$volunteer_interests[$i]]) {								
-														$volunteer_interests[$i] . "</td>";								
+											echo "<td><input name='interest_checkboxes[]' class='interest_checkboxes' 
+															value='$volunteer_interests[$i]' type='checkbox' checked>" . 
+															$volunteer_interests[$i] . "</td>";	
+										} else {
+											echo "<td><input name='interest_checkboxes[]' class='interest_checkboxes' 
+															value='$volunteer_interests[$i]' type='checkbox'>" . 
+															$volunteer_interests[$i] . "</td>";										
+										}							
 									}
 								}
 								echo "</tr>";								

sql/populate.sql

@@ -200,17 +200,17 @@ ALTER TABLE transaction_log MODIFY description text(2048) DEFAULT NULL;
 --
 CREATE TABLE IF NOT EXISTS options (
 	option_name_id int(10) unsigned NOT NULL AUTO_INCREMENT,
-	option_name varchar(64) NOT NULL,
+	option_name varchar(64) NOT NULL UNIQUE,
 	PRIMARY KEY (option_name_id)
-);
+) DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;
 
 -- selections
 -- stores the volunteer interest selections made by people
 --
 CREATE TABLE IF NOT EXISTS selections (
 	contact_id int(10) unsigned,
-	selection int(10) unsigned,
+	selection int(10) unsigned UNIQUE,
-	selection_value int(10) unsigned,
+	selection_value text,
 	FOREIGN KEY (contact_id) REFERENCES contacts (contact_id) ON DELETE CASCADE ON UPDATE CASCADE,
 	FOREIGN KEY (selection) REFERENCES options (option_name_id) ON DELETE CASCADE ON UPDATE CASCADE	
-);
+) DEFAULT CHARSET=latin1;