WP Ajax Query

Description

WP Ajax Query allows you to query your WordPress database using the same query paramaters you would use for WP_Query, and return a JSON respresentation of the query results. This allows developers to easily interface with WordPress without having to relearn a new API.

How It Works

The Ajax Query interface would be available at http://example.com/wp-admin/admin-ajax.php?action=query

A sample jQuery request would be like:
$.get(ajaxurl, { action: ‘query’ }, function () { }, ‘json’);

Querying for a post:
$.get(ajaxurl, { action: ‘query’, p: 1 }, function () { }, ‘json’);

JSON results:
{
« id »: 1,
« type »: ‘post’,
« title »: « Hello World »,
« permalink »: « http:\/\/example.com\/?p=1 »
}

Query a category:
$.get(ajaxurl, { action: ‘query’, cat: 1 }, function () { }, ‘json’);

JSON results:
{
« id »: 1
« type »: « category »,
« permalink »: « http:\/\/example.com\/?cat=1 »,
« terms »: [],
« posts »: []
}

terms and `posts` represents an array of either terms that are sub categories of the category, or posts belonging to the category.<h3>Why I Created It</h3>

Needed a common way to query the database for posts and taxonomies across multiple plugins, and didn’t find a suitable replacement.