259 lines
8.1 KiB
PHP
259 lines
8.1 KiB
PHP
<?php
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class FacetWP_Facet_Checkboxes extends FacetWP_Facet
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{
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function __construct() {
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$this->label = __( 'Checkboxes', 'fwp' );
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$this->fields = [ 'parent_term', 'modifiers', 'hierarchical', 'show_expanded',
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'ghosts', 'operator', 'orderby', 'count', 'soft_limit' ];
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}
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/**
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* Load the available choices
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*/
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function load_values( $params ) {
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global $wpdb;
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$facet = $params['facet'];
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$from_clause = $wpdb->prefix . 'facetwp_index f';
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$where_clause = $params['where_clause'];
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// Orderby
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$orderby = $this->get_orderby( $facet );
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// Limit
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$limit = $this->get_limit( $facet );
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// Use "OR" mode when necessary
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$is_single = FWP()->helper->facet_is( $facet, 'multiple', 'no' );
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$using_or = FWP()->helper->facet_is( $facet, 'operator', 'or' );
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// Facet in "OR" mode
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if ( $is_single || $using_or ) {
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$where_clause = $this->get_where_clause( $facet );
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}
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$orderby = apply_filters( 'facetwp_facet_orderby', $orderby, $facet );
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$from_clause = apply_filters( 'facetwp_facet_from', $from_clause, $facet );
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$where_clause = apply_filters( 'facetwp_facet_where', $where_clause, $facet );
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$sql = "
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SELECT f.facet_value, f.facet_display_value, f.term_id, f.parent_id, f.depth, COUNT(DISTINCT f.post_id) AS counter
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FROM $from_clause
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WHERE f.facet_name = '{$facet['name']}' $where_clause
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GROUP BY f.facet_value
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ORDER BY $orderby
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LIMIT $limit";
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$output = $wpdb->get_results( $sql, ARRAY_A );
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// Show "ghost" facet choices
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// For performance gains, only run if facets are in use
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$show_ghosts = FWP()->helper->facet_is( $facet, 'ghosts', 'yes' );
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if ( $show_ghosts && FWP()->is_filtered ) {
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$raw_post_ids = implode( ',', FWP()->unfiltered_post_ids );
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$sql = "
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SELECT f.facet_value, f.facet_display_value, f.term_id, f.parent_id, f.depth, 0 AS counter
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FROM $from_clause
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WHERE f.facet_name = '{$facet['name']}' AND post_id IN ($raw_post_ids)
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GROUP BY f.facet_value
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ORDER BY $orderby
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LIMIT $limit";
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$ghost_output = $wpdb->get_results( $sql, ARRAY_A );
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$tmp = [];
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$preserve_ghosts = FWP()->helper->facet_is( $facet, 'preserve_ghosts', 'yes' );
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$orderby_count = FWP()->helper->facet_is( $facet, 'orderby', 'count' );
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// Keep the facet placement intact
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if ( $preserve_ghosts && ! $orderby_count ) {
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foreach ( $ghost_output as $row ) {
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$tmp[ $row['facet_value'] . ' ' ] = $row;
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}
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foreach ( $output as $row ) {
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$tmp[ $row['facet_value'] . ' ' ] = $row;
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}
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$output = $tmp;
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}
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else {
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// Make the array key equal to the facet_value (for easy lookup)
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foreach ( $output as $row ) {
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$tmp[ $row['facet_value'] . ' ' ] = $row; // Force a string array key
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}
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$output = $tmp;
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foreach ( $ghost_output as $row ) {
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$facet_value = $row['facet_value'];
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if ( ! isset( $output[ "$facet_value " ] ) ) {
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$output[ "$facet_value " ] = $row;
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}
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}
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}
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$output = array_splice( $output, 0, $limit );
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$output = array_values( $output );
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}
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return $output;
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}
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/**
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* Generate the facet HTML
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*/
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function render( $params ) {
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$facet = $params['facet'];
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if ( FWP()->helper->facet_is( $facet, 'hierarchical', 'yes' ) ) {
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return $this->render_hierarchy( $params );
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}
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$output = '';
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$values = (array) $params['values'];
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$soft_limit = empty( $facet['soft_limit'] ) ? 0 : (int) $facet['soft_limit'];
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$key = 0;
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foreach ( $values as $key => $row ) {
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if ( 0 < $soft_limit && $key == $soft_limit ) {
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$output .= '<div class="facetwp-overflow facetwp-hidden">';
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}
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$output .= $this->render_choice( $row, $params );
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}
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if ( 0 < $soft_limit && $soft_limit <= $key ) {
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$output .= '</div>';
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$output .= '<a class="facetwp-toggle">' . __( 'See {num} more', 'fwp-front' ) . '</a>';
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$output .= '<a class="facetwp-toggle facetwp-hidden">' . __( 'See less', 'fwp-front' ) . '</a>';
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}
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return $output;
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}
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/**
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* Generate the facet HTML (hierarchical taxonomies)
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*/
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function render_hierarchy( $params ) {
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$output = '';
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$facet = $params['facet'];
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$values = FWP()->helper->sort_taxonomy_values( $params['values'], $facet['orderby'] );
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$init_depth = -1;
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$last_depth = -1;
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foreach ( $values as $row ) {
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$depth = (int) $row['depth'];
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if ( -1 == $last_depth ) {
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$init_depth = $depth;
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}
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elseif ( $depth > $last_depth ) {
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$output .= '<div class="facetwp-depth">';
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}
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elseif ( $depth < $last_depth ) {
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for ( $i = $last_depth; $i > $depth; $i-- ) {
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$output .= '</div>';
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}
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}
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$output .= $this->render_choice( $row, $params );
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$last_depth = $depth;
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}
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for ( $i = $last_depth; $i > $init_depth; $i-- ) {
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$output .= '</div>';
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}
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return $output;
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}
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/**
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* Render a single facet choice
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*/
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function render_choice( $row, $params ) {
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$label = esc_html( $row['facet_display_value'] );
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$output = '';
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$selected_values = (array) $params['selected_values'];
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$selected = in_array( $row['facet_value'], $selected_values ) ? ' checked' : '';
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$selected .= ( '' != $row['counter'] && 0 == $row['counter'] && '' == $selected ) ? ' disabled' : '';
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$output .= '<div class="facetwp-checkbox' . $selected . '" data-value="' . esc_attr( $row['facet_value'] ) . '">';
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$output .= '<span class="facetwp-display-value">';
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$output .= apply_filters( 'facetwp_facet_display_value', $label, [
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'selected' => ( '' !== $selected ),
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'facet' => $params['facet'],
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'row' => $row
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]);
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$output .= '</span>';
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$output .= '<span class="facetwp-counter">(' . $row['counter'] . ')</span>';
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$output .= '</div>';
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return $output;
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}
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/**
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* Filter the query based on selected values
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*/
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function filter_posts( $params ) {
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global $wpdb;
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$output = [];
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$facet = $params['facet'];
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$selected_values = $params['selected_values'];
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$sql = $wpdb->prepare( "SELECT DISTINCT post_id
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FROM {$wpdb->prefix}facetwp_index
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WHERE facet_name = %s",
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$facet['name']
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);
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// Match ALL values
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if ( 'and' == $facet['operator'] ) {
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foreach ( $selected_values as $key => $value ) {
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$results = facetwp_sql( $sql . " AND facet_value IN ('$value')", $facet );
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$output = ( $key > 0 ) ? array_intersect( $output, $results ) : $results;
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if ( empty( $output ) ) {
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break;
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}
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}
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}
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// Match ANY value
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else {
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$selected_values = implode( "','", $selected_values );
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$output = facetwp_sql( $sql . " AND facet_value IN ('$selected_values')", $facet );
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}
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return $output;
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}
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/**
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* Output any front-end scripts
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*/
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function front_scripts() {
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FWP()->display->json['expand'] = '[+]';
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FWP()->display->json['collapse'] = '[-]';
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}
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/**
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* (Front-end) Attach settings to the AJAX response
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*/
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function settings_js( $params ) {
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$expand = empty( $params['facet']['show_expanded'] ) ? 'no' : $params['facet']['show_expanded'];
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return [ 'show_expanded' => $expand ];
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}
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}
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