In order to submit a form, collect the
results from the database and present them to the user without a page
refresh, redirect or reloading, you need to:
- Use Ajax to Post the data from your form to a php file;
- That file in background will query the database and obtain the results for the data that he as received;
- With the query result, you will need to inject it inside an html
element in your page that is ready to present the results to the user;
- At last, you need to set some controlling stuff to let styles and document workflow run smoothly.
So, having said that, here's an working example:
We have a table "persons" with a field "age" and a field "name" and
we are going to search for persons with an age of 32. Next we will
present their names and age inside a
div with a
table with pink background and a very large text.
To properly test this, we will have an header, body and footer with gray colors!
index.php
<script type="text/javascript">
$(function() {
$("#lets_search").bind('submit',function() {
var value = $('#str').val();
$.post('db_query.php',{value:value}, function(data){
$("#search_results").html(data);
});
return false;
});
});
</script>
</head>
<body style="margin:0;padding:0px;width:100%;height:100%;background-color:#FFFFFF;">
<div style="width:1024px;margin:0 auto;height:100px;background-color:#f0f0f0;text-align:center;">
HEADER
</div>
<div style="width:1024px;margin:0 auto;height:568px;background-color:#f0f0f0;text-align:center;">
<form id="lets_search" action="" style="width:400px;margin:0 auto;text-align:left;">
Search:<input type="text" name="str" id="str">
<input type="submit" value="send" name="send" id="send">
</form>
<div id="search_results"></div>
</div>
<div style="width:1024px;margin:0 auto;height:100px;background-color:#f0f0f0;text-align:center;">
FOOTER
</div>
</body>
</html>
db_query.php
<?php
define("HOST", "localhost");
// Database user
define("DBUSER", "username");
// Database password
define("PASS", "password");
// Database name
define("DB", "database_name");
// Database Error - User Message
define("DB_MSG_ERROR", 'Could not connect!<br />Please contact the site\'s administrator.');
############## Make the mysql connection ###########
$conn = mysql_connect(HOST, DBUSER, PASS) or die(DB_MSG_ERROR);
$db = mysql_select_db(DB) or die(DB_MSG_ERROR);
$query = mysql_query("
SELECT *
FROM persons
WHERE age='".$_POST['value']."'
");
echo '<table>';
while ($data = mysql_fetch_array($query)) {
echo '
<tr style="background-color:pink;">
<td style="font-size:18px;">'.$data["name"].'</td>
<td style="font-size:18px;">'.$data["age"].'</td>
</tr>';
}
echo '</table>';
?>
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