[ ], 'title' => 'post_title', 'subtitle' => 'post_excerpt', 'image_url' => 'thumbnail', 'limit' => 6, 'no_found_rows' => true, // Skip count the found row for better performance 'buttons' => 'View, web_url, permalink' ] ); $fields = [ 'title', 'subtitle', 'image_url' ]; // Bind $this->keys to query_args if not set $query_args = $this->parse_query_args( $atts ); $posts = get_posts( $query_args ); foreach ( $posts as $post ) { setup_postdata( $post ); $bubble = [ ]; foreach ( $fields as $field ) { if ( ! array_key_exists( $field, $atts ) ) { continue; } $field_value = $this->get_binding_field( $post, $atts[ $field ] ); // If $field is image_url but URL is not valid. Skip it. if ( $field === 'image_url' && ! filter_var( $field_value, FILTER_VALIDATE_URL ) ) { continue; } if ( ! empty( $field_value ) ) { $bubble[ $field ] = $field_value; } } $bubble['buttons'] = $this->parse_buttons( $atts['buttons'], $post ); $bubbles[] = $bubble; } wp_reset_postdata(); return json_encode( $bubbles ); } /** * Parse simple query args. * * @param $atts * * @return array|mixed|object */ private function parse_query_args( $atts ) { // If is json. Parse it! if ( ! is_array( $atts['query_args'] ) ) { $arr = @json_decode( $atts['query_args'], true ); if ( is_array( $arr ) ) { $atts['query_args'] = $arr; } } $query_args = $atts['query_args']; if ( is_numeric( $atts['limit'] ) && $atts['limit'] <= 6 && $atts['limit'] > 0 && ! isset( $query_args['posts_per_page'] ) ) { $query_args['posts_per_page'] = $atts['limit']; } foreach ( $atts as $key => $value ) { if ( in_array( $key, $this->keys ) ) { $query_args[ $key ] = $value; } } return $query_args; } private function get_binding_field( $post, $field ) { if ( $field === 'the_excerpt' ) { return get_the_excerpt( $post ); } if ( $field === 'thumbnail' && has_post_thumbnail( $post->ID ) ) { $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'single-post-thumbnail' ); return $image[0]; } if ( isset( $post->{$field} ) ) { return $post->{$field}; } $post_meta = get_post_meta( $post->ID, $field, true ); if ( isset( $post_meta ) && is_string( $post_meta ) ) { return $post_meta; } return ''; } /** * Parse button from pipe string to array * Example: View, web_url, permalink|Buy, postback, BUY_NOW * * @param String $buttons * @param \WP_Post $post * * @return array */ private function parse_buttons( $buttons, $post = null ) { $buttons = explode( '|', $buttons ); $buttons = array_map( function ( $button ) use ( $post ) { $params = array_map( 'trim', explode( ',', $button ) ); $button = [ 'title' => $params[0], 'type' => $params[1], ]; if ( $button['type'] === 'postback' ) { $button['payload'] = $params[2]; } if ( $button['type'] === 'web_url' ) { if ( $params[2] === 'permalink' ) { $params[2] = get_permalink( $post ); } if ( filter_var( $params[2], FILTER_VALIDATE_URL ) ) { $button['url'] = $params[2]; } } return $button; }, $buttons ); return $buttons; } } new Post_Generic;