how to use a remote back-end to check if a given username is already taken or not. check and validate locally without using database or web-server
This is latest version of bootstrapValidator, jquery, html5, bootstrap.
<script src="js/jquery.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.bootstrapvalidator/0.5.2/js/bootstrapValidator.min.js"></script>
<form id="registrationForm" class="form-horizontal">
<div class="form-group">
<label class="col-lg-3 control-label">Username</label>
<div class="col-lg-5">
<input type="text" class="form-control" name="username" />
</div>
</div>
</form>
and custom js is
$(document).ready(function() {
$('#registrationForm').bootstrapValidator({
fields: {
username: {
message: 'The username is not valid',
validators: {
remote: {
message: 'The username is not available',
url: 'default.php',
data: {
type: 'username'
}
}
}
}
}
});
});
back-end default.php file is
<?php
$isAvailable = true;
switch ($_POST['type']) {
case 'username':
default:
$username = $_POST['username'];
data = 'admin','root';
$isAvailable = true;
break;
}
echo json_encode(array(
'valid' => $isAvailable,
));
username already exists or not from default.php file, error not showing.
$(document).ready(function() {
$('#registrationForm').bootstrapValidator({
fields: {
username: {
message: 'The username is not valid',
validators: {
callback: {
callback: function(value, validator) {
var data = "user1";
if (value === data) {
return {
valid: false,
message: 'The name is not available'
}
}
return true;
}
}
}
}
}
});
});
Instead of using php function, I have used call back function for this it's working fine.
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