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» Dynamically add rows to a form. Complete solution
Here is a complete solution for adding rows to a form. This sample script displays a form for insert and update products. When clicking on the link [+], we add a new product line.
It also includes the update by sending the "mod" parameter corresponding to the ID of the MySQL table row to edit.
Dynamic system for adding rows :
Initially, the PHP script creates 100 form lines, but displays only the first. The following are hidden by the CSS display:none.
The names of the form fields are one array that is incremented every row. When recording, this table is serialized into a string of characters to fit into a MySQL TEXT type field. To retrieve this table, simply use the opposite function : unserialize()
Tested with Safari Google Chrome Firefox3 Firefox4 Opera IE6 IE7 IE8
Dynamically add rows to a form. Complete solution
05/21/2011 by Dux - 3.5/5 (22 ratings)Here is a complete solution for adding rows to a form. This sample script displays a form for insert and update products. When clicking on the link [+], we add a new product line.
It also includes the update by sending the "mod" parameter corresponding to the ID of the MySQL table row to edit.
Dynamic system for adding rows :
Initially, the PHP script creates 100 form lines, but displays only the first. The following are hidden by the CSS display:none.
The names of the form fields are one array that is incremented every row. When recording, this table is serialized into a string of characters to fit into a MySQL TEXT type field. To retrieve this table, simply use the opposite function : unserialize()
See a demonstration of this script in action :
Open in a new window Open in the same windowsource code
<?php
$mod = addslashes($_REQUEST['mod']);
// Save in DB
if (isset($_POST['text'])) {
$text = $_POST['text'];
$line = serialize($text);
if ($mod == '') {
// INSERT INTO BDD Eg.
// $res = mysql_query( "INSERT INTO table VALUES ('', '".$line."', '".time()."')" );
} else {
// UPDATE BDD
// $res = mysql_query( "UPDATE table SET product_line = '".$line."', date = '".time()."' WHERE id = ".$mod );
}
}
// Preparing update
if ($mod != '') {
$res = mysql_query( "SELECT * FROM table WHERE id = ".$mod);
$r = mysql_fetch_array($res);
$text = unserialize( $r['product_line'] );
$nbr_ligne = count( $text['detail'] );
}
// Display the form
echo '
<form method="post" action="/script.php">
<input type="hidden" name="mod" value="'.$mod.'" />
<table style="width: 700px">
<tr>
<th>Description</th>
<th>Quantity</th>
<th>Price</th>
</tr>';
// Loop to prepare the display of 100 product lines
for ($i=0; $i<100; $i++) {
if ($text['quantity'][$i] == "") $text['quantity'][$i] = 1;
if ($text['unit'][$i] == "") $text['unit'][$i] = "0.00";
// Display only the first line
if ($nbr_ligne == 0) $nbr_ligne = 1;
if ($i >= $nbr_ligne) $display = 'style="display:none"';
echo '
<tr id="cell'.$i.'" '.$display.'>
<td>
<textarea name="text[detail]['.$i.']">'.stripslashes($text['detail'][$i]).'</textarea>
<br />
<a href="javascript:void(0)" onclick="javascript:document.getElementById(\'cell'.($i+1).'\').style.display=\'table-row\'; this.style.display=\'none\'">[+]</a>
</td>
<td>
<input name="text[quantity]['.$i.']" id="q'.$i.'" value="'.stripslashes($text['quantity'][$i]).'" size="4" />
</td>
<td>
<input name="text[unit]['.$i.']" id="u'.$i.'" value="'.stripslashes($text['unit'][$i]).'" size="7" /> USD
</td>
</tr>';
}
echo '
</table>
<input type="submit" value="Save" />
</form>
';
?>
Tested with Safari Google Chrome Firefox3 Firefox4 Opera IE6 IE7 IE8
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Comments for Dynamically add rows to a form. Complete solution
Johne209 01/01/2015 05:37
Very well written article. It will be helpful to anyone who usess it, as well as yours truly
Very well written article. It will be helpful to anyone who usess it, as well as yours truly
rem 02/12/2013 15:24
coucou
coucou
Nico 01/05/2012 08:15
Serialize function doesnt transmit the null value of the array
Serialize function doesnt transmit the null value of the array
D6_ 01/04/2012 05:57
Question - If you create a hundred form elements, displayed or not, when the user hits submit, that info is passed to the action page. How does the action page know to only look at the number of elements that was chosen by the user?
Question - If you create a hundred form elements, displayed or not, when the user hits submit, that info is passed to the action page. How does the action page know to only look at the number of elements that was chosen by the user?
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