Swiftype Search Custom Modifications

swiftype-search-custom-modifications.php

<?php
/*
Plugin Name: Swiftype Search Custom Modifications
Description: This custom plugin lets you add additional parameters/filters to your Swifttype-powered searches
Author: Bob Hiler
Version: 0.0.1
*/

$topic = $_GET[ 'topic' ];

$topics_and_subtopics = array (
'find_your_idea'=>array ('keyword'=>'(\"customer interviews\") OR (MVP)','topiccategory'=>'toplevel','label'=>'Find Your Idea'),
'interview_customers'=>array ('keyword'=>'\"customer interviews\"','topiccategory'=>'find_your_idea','label'=>'Interview Customers'),
'minimal_viable_product'=>array ('keyword'=>'MVP','topiccategory'=>'find_your_idea','label'=>'Minimal Viable Products'),
);

function swiftype_search_params_filter($params) {
	global $wp_query;
	$params['filters[posts][object_type]'] = '!page';
	$params['search_fields[posts][]'] = 'title^2.2';
	$params['search_fields[posts][]'] = 'body';

	// by default, make swiftype return posts in one of three categories. these numbers are the three category IDs we want to pull
	$params['filters[posts][category]'] = array (17, 293, 244);
	
	// if category is set to one of three pre-approved string values in the query string of the URL, then override the category filter so it only pulls that specific category
	$category = $_GET['category'];
	switch ($category) {
		case 'interviews':
			$params['filters[posts][category]'] = 17;
			break;
		case 'courses':
			$params['filters[posts][category]'] = 244;
			break;
		case 'cheatsheets':
			$params['filters[posts][category]'] = 293;
			break;
	}

	// if sortby is set to 'date' in the query string of the URL, then tell swiftype to sort the results by date in descending order
	$sortby = $_GET['sortby'];
	if ( $sortby == 'date' ) {
			$params['sort_field']['posts'] = 'timestamp';
			$params['sort_direction']['posts'] = 'desc';
	}
	return $params;
}

function topic_to_keyword_conversion_pre_get_posts($query) {
	global $topic, $topics_and_subtopics;
	// Verify that we are on the search page that that this came from the event search form
	if( $query->query_vars['s'] != '' && is_search() ) {
		// Reset the search value
		$query->set('s', $topics_and_subtopics[$topic]['keyword']);
	}
}

// Filter the search page if $topic is set
if ( !empty($topic) ) {
	add_filter('pre_get_posts', 'topic_to_keyword_conversion_pre_get_posts');
}

add_filter( swiftype_search_params, swiftype_search_params_filter, 8, 1 );
?>