Form with PHP and AJAX Request - php

Question

I have the following simple form:
Here is my code behind the form:
<form action="javascript:void(0);" method="post">
<fieldset>
<legend>ROOM EQUIPMENT</legend>
<div class="inline_inputs">
<div class="input_box">
<input type="checkbox" name="equipment" value="computer" id="computer">
<label for="computer">Computer</label>
</div><!-- .input_box -->
<div class="input_box">
<input type="checkbox" name="equipment" value="projector" id="projector">
<label for="projector">Projector</label>
</div><!-- .input_box -->
<div class="input_box">
<input type="checkbox" name="equipment" value="whiteboard" id="whiteboard">
<label for="whiteboard">Whiteboard</label>
</div><!-- .input_box -->
<div class="input_box">
<input type="checkbox" name="equipment" value="visualiser" id="visualiser">
<label for="visualiser">Visualiser</label>
</div><!-- .input_box -->
<div class="input_box">
<input type="checkbox" name="equipment" value="desk" id="desk">
<label for="desk">Desk</label>
</div><!-- .input_box -->
</div>
</fieldset>
<div class="buttons">
<input type="submit" class="reg_button" value="GET ROOMS" />
</div><!-- .buttons -->
And finally here is how I am making the AJAX request on the same page where this form sits:
<script>
$('form').submit(function(){
var str = $(this).serialize();
$.ajax({
url: "userLogic.php",
cache: false
}).done(function( html ) {
$("#rooms_wrap").append(html);
});
});
I am fairly new to PHP and I'm having an issue with the form submission. When I make a selection, my selection is not sent to the userLogic.php file. I get a print out of:
Sorry, You have not made a selection.
This is coming from the PHP code that sits inside the userLogic.php file which is this:
<?php
include("connect.php");
$items = array_key_exists('equipment', $_POST) ? $_POST['equipment'] : '';
if(!empty($items))
{
if ($_POST["equipment"] == "computer") {
echo "checked computer!";
} else if($_POST["equipment"] == "projector")
{
echo "checked projector!";
$sql = "SELECT room_name, day_avail, from_time, to_time, equip_name
FROM rooms
JOIN equipment ON (equipment.room_id = rooms.room_id)
JOIN room_availability ON (room_availability.room_id = rooms.room_id)
WHERE equip_name='Projector'
GROUP BY day_avail";
$myData = mysql_query($sql,$conn) or die(mysql_error());
} else if($_POST["equipment"] == "whiteboard")
{
echo "checked whiteboard!";
} else if($_POST["equipment"] == "visualiser")
{
echo "checked visualiser!";
} else if($_POST["equipment"] == "desk")
{
echo "checked desk!";
}
} else {
echo "> Sorry, You have not made a selection.";
}
?>

Answer 1

Look up the arguments for $.ajax. You're not POSTing... And you're not POSTing data, either.
type: "POST"
and
data: str
needs to be in:
$('form').submit(function(){
var str = $(this).serialize();
$.ajax({
url: "userLogic.php",
cache: false,
type: "POST",
data: str
}).done(function( html ) {
$("#rooms_wrap").append(html);
});
});

Answer 2

Doesn't seem you are posting your data..do it like this.
$.ajax({
url: "userLogic.php",
cache: false,
type: "POST",
data: str,
//rest of your code