how to add in quantity and size in my online shopping

[kang jia]

hi

i am doing online shop now using php, my product is clothes, Now i am able to let users to order, however i don;t know how should i validate quantity and size field when they select that specific clothes. i just pass it to do_addcart.php but it seems the value never pass through. what should i do now?

how can i let users to put in quantity and size field when they select clothes? i have to validate the quantity and size field before add into cart. also i have to know the vaule of their input.

[ronnil]

a posibility is to make a hidden field where you store the quantity value. make a div tag where you display that value, and then two image buttons (+ and -) when the user clicks one of these buttons you increase/decrease the number.

<script language="javascript">
function changeQuant(quantity)
{
    var hiddenObj = document.getElementById('quantity');
    var currentQuant = hiddenObj.value;
    currentQuant = currentQuant + quantity;
 
    hiddenObj.value = currentQuant;
    document.getElementById('show_quant').innerHTML = currentQuant;
}
 
</script>
<form>
<input type="hidden" name="quantity" id="quantity" value="1" /> <!-- the default value is ofc 1 item -->
</form>
 
<div id="show_quant"><img onclick="changeQuant(-1)" alt="-" /><img onclick="changeQuant(1)" alt="+" />

ofcourse the hidden field must be attached to whatever form you use to make the order. when submitting it, you will then have a variable by the name of quantity.

This is just one of many solutions :)

[Atli]

Hi.

Could you show us the code you are using? It helps to see the code your trying to debug :)

My solution to a similar functionality was to add a text field to my form and allow the user to type the quantity they wanted. Then that field would simply be passed to the next page using HTTP_POST and I would validate it there.

If you are not sure how that works you can check out this article , where it is discussed in detail.

[kang jia]

yes, i have do the same as what u said, i validate it in the next page, the code is like the following:
in the first page:

$getName = $_GET['name'];
 
    if (isset($getName)){
        $selPaint = "SELECT * from ladies where brand ='".$getName."'";
 
    }
    else{
        $selPaint = "SELECT * from ladies";
    }
 
$execPaint = mysql_query($selPaint);
    while($thisArt = mysql_fetch_array($execPaint)){
 
        $fName = $thisArt['filename'];
        $id = $thisArt['id'];
        $_SESSION['id']=$id;
 
     //echo "<input type='hidden' name='vin' value=$id>";
 
        echo"<table bgcolor='#FFFFFF' border='1' width='570' height='200' cellspacing='5'>";
        $title=$thisArt['title'];
     echo "<h3><td>".$title."</h3>";     
 
    $text=wordwrap($title,2,"<br />\n");
 
    echo "<a href =".$uploaddir.$fName.">";
        echo "<img src=".$thumbdir."thumb_".$fName."></a><br>";
 
        $price=$thisArt['price'];
     echo "<td><br><br><br>";    
        $Des = "<h4>".$thisArt['description']."</h4><br>";
        $text1=wordwrap($Des,60,"<br />\n");
        echo"<h3>".$text1."</h3></td><br>";
        /*if($role =="admin"){
        echo "<td><a href=\"do_delete.php?id=".$id."\">Delete</a></td>";
        echo "<td><a href=\"updatecontact.php?id=".$id."\">Update</a></td>";
 
        }*/
    echo"</table>";
        echo "<BR>";
 
        if (isset($_SESSION['userid'])) {
 
        if($role =="admin"){
        //echo"&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
        echo "<a href=\"do_delete.php?id=".$id."\">Delete</a>";
        echo "&nbsp;&nbsp;";
        echo "<a href=\"updatecontact.php?id=".$id."\">Update</a>";
        echo "<br>";
        echo "<br>";
        }
        $rprice=round($price,2);
        if(isset($currency)){
        $asd = $price*$cal;
        $round=round($asd,2);
       echo"<table>";
       echo"<tr>";
       echo"<td>";
        echo "<input type = 'checkbox' value = '1' name = '".$id."'>Buy this poster. Currency: ".$look.". Price = $". $round;
      echo"</tr>";
    echo "</table>";
        echo"
            <tr>
                <td class='FormLabel'><font color='red'>*</font>    <span class='error'><nobr>Size:</nobr></span>
</td>
                <td class='formFieldSmall'>
            <select id='size' name='size' tabindex='11'>
                            <option value='0'>---</option>
                            <option value='1' >S</option>
                            <option value='2'>M</option>
                            <option value='3'>L</option>
                            <option value='4'>XL</option>
                    </select>
                    </td>
                    </tr>";     
    echo"&nbsp;&nbsp;&nbsp;&nbsp;";    
    echo"
            <tr>
                <td class='loginFormLabel'><font color='red'>*</font>    <span class='error'><nobr>Quantity:</nobr></span>
</td>
                <td class='formFieldSmall'>
            <select id='NO' name='quantity' tabindex='11'>
                            <option value='0'>---</option>
                            <option value='1' >1</option>
                            <option value='2'>2</option>
                            <option value='3'>3</option>
                            <option value='4'>4</option>
                            <option value='5'>5</option>
                            <option value='6'>6</option>
                            <option value='7'>7</option>
                            <option value='8'>8</option>
                            <option value='9'>9</option>
                            <option value='10'>10</option>
                    </select>
                    </td>
                    </tr>";     
 
    }
        else{
    echo "<input type = 'checkbox' value = '1' name = '".$id."'>Buy this poster. Price = $ S.G ".$rprice;
 
    echo"    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
    echo"
            <tr>
                <td class='FormLabel'><font color='red'>*</font>    <span class='error'><nobr>Size:</nobr></span>
</td>
                <td class='formFieldSmall'>
            <select id='size' name='size' tabindex='11'>
                            <option value='0'>---</option>
                            <option value='1' >S</option>
                            <option value='2'>M</option>
                            <option value='3'>L</option>
                            <option value='4'>XL</option>
                    </select>
                    </td>
                    </tr>"; 
echo"&nbsp;&nbsp;&nbsp;&nbsp;";                    
            echo"<tr>
                <td class='loginFormLabel'><font color='red'>*</font>    <span class='error'><nobr>Quantity:</nobr></span>
</td>
                <td class='formFieldSmall'>
            <select id='NO' name='quantity' tabindex='11'>
                            <option value='0'>---</option>
                            <option value='1' >1</option>
                            <option value='2'>2</option>
                            <option value='3'>3</option>
                            <option value='4'>4</option>
                            <option value='5'>5</option>
                            <option value='6'>6</option>
                            <option value='7'>7</option>
                            <option value='8'>8</option>
                            <option value='9'>9</option>
                            <option value='10'>10</option>
                    </select>
                    </td>
                    </tr>";
            echo "<br>";
 
            }
 
        }
 
    }
 

in next page:

$userid = $_SESSION['userid'];
 
    $date=date("D j-M-Y G:i:s");
 
        echo "Image ID = ".$_SESSION['id']."<br>";
        //echo "Image ID = ".$_POST['vin1']."<br>";
        //echo "Image ID = ".$_POST['vin2']."<br>";
        //echo "Image ID = ".$_POST['vin3']."<br>";
 
        $chkbox2 = $_POST['quantity'];
        $chkbox3 = $_POST['size'];
        echo $chkbox2;
        echo $chkbox3;
 
        if ($chkbox2 == 0 || $chkbox3 == 0){
                echo "<script>alert('you did not select your quantity and size, we will direct you back')</script>";
                //header('Refresh: 3; url=index1.php');
                //break;
                echo "<meta http-equiv='refresh' content='1;url=index1.php'>";
        }
 
        else {
            foreach ($_POST as $key => $value) {
    echo "key: ".$key.", value: ".$value."<br>";
        $sql = "INSERT INTO orders (imageid, userid, time, quantity, size) VALUES ('$key', '$userid', '$date','$chkbox2','$chkbox3')";
        mysql_query($sql); 
    }
 
    //header('Refresh: 3; url=cart.php');
    echo "<meta http-equiv='refresh' content='5;url=http://google.com'>";
    echo"<BR>";
    echo "Your order is being processed, you will be directed to your shopping cart soon";
        }
 

this is code i have done, but it did not post value to the next page, it always 0, and image id is always 16, how should i solve this? thanks for your kind help :)

[kovik]

You input this into your database very strangely. On the second page, call a print_r($_POST) and tell us what you get.