This helper library makes it easier to handle AJAX requests in WordPress plugins. Mainly for personal use.
Define action:
$exampleAction = ajaw_v1_CreateAction('ws_do_something')
->handler(array($this, 'myAjaxCallback'))
->requiredCap('manage_options')
->method('post')
->requiredParam('foo')
->optionalParam('bar', 'default value')
->register();
Call from JavaScript:
AjawV1.getAction('ws_do_something').post(
{
'foo': '...'
},
function(response) {
console.log(response);
}
);
- Automate common, boring stuff.
- Automatically pass the
admin-ajax.php
URL and nonce to JS. - Define required parameters.
$builder->requiredParam('foo', 'int')
- Define optional parameters with default values.
$builder->optionalParam('meaningOfLife', 42, 'int')
- Automatically remove "magic quotes" that WordPress adds to
$_GET
,$_POST
and$_REQUEST
. - Encode return values as JSON.
- Automatically pass the
- Security should be the default.
- Generate and verify nonces. Nonce verification is on by default, but can be disabled.
$builder->withoutNonce()
- Check capabilities.
$builder->requiredCap('manage_options');
- Verify that all required parameters are set.
- Validate parameter values.
$builder->optionalParam('things', 1, 'int', function($value) { if ($value > 10) { return new WP_Error( 'excessive_things', 'Too many things!', 400 //HTTP status code. ); } })
- Set the required HTTP method.
$builder->method('post')
- Generate and verify nonces. Nonce verification is on by default, but can be disabled.
- Resilience.
- Lenient response parsing to work around bugs in other plugins. For example, deal with extraneous whitespace and PHP notices in AJAX responses.
- Multiple versions of the library can coexist on the same site.
Backwards compatibility. In theory, this library should be compatible with WP 4.1+.