Tag: product

Plugin is a small editor that lets you create a filter such as a price slider, mark check boxes, and a seasons drop-down menu.

An example of how the plugin works can be found on the following page: http://demo-product-filters.anexter.net

Element classes are major classes of plugins, but they have too many responsibilities

• Creating controls for the editor in admin https://i.stack.imgur.com/JDH3z.png
• Rendering for which frontend with which user
  will interact
• Apply selected options to the product
  Inquiry. For example, if the customer selected cat1 in the item,
  then it is necessary to change the query to the database for it to exist
  Only products of this category

Can you tell me which pattern or solution I need for the code to conform to SOLID principles?

class Drop_Down_Element extends Abstract_Filtering_Element {
    public function get_element_slug() {
        return 'drop-down';
    }

    public function get_element_title() {
        return __( 'Drop Down' );
    }

    public function get_url_key() {
        return $this->get_option( 'url-key' );
    }

    public function apply_filter_to_query( WP_Query $product_query, $filter_value ) {
        $tax_query_item = (
            'taxonomy' => $this->get_taxonomy(),
            'field' => 'slug',
            'terms' => $filter_value,
            'operator' => 'OR'
        );

        $product_query->set(
            'tax_query',
            array_merge(
                $product_query->get( 'tax_query', () ),
                ( $this->get_url_key() => $tax_query_item )
            )
        );
    }

    public function render_template() {
        $this->get_teplate_loader()->render_template( 'elements/drop-down.php', (
            'element' => $this,
            'items' => $this->get_items()
        ) );
    }

    protected function get_items() {
        $items = ();

        foreach ( get_terms( (
            'taxonomy' => $this->get_taxonomy(),
            'hierarchical' => true,
            'menu_order' => 'asc',
            'order' => 'asc'
        ) ) as $term ) {
            $key = urldecode( $term->slug );

            $items() = (
                'key' => $key,
                'title' => $term->name,
            );
        }

        return $items;
    }

    public function generate_controls() {
        $editor_panel = new Tabs_Layout( (
            'title' => $this->get_element_title(),
            'tabs' => (
                'general' => (
                    'label' => __( 'General', 'wcpf' ),
                    'controls' => (
                        new ControlText_Control( (
                            'key' => 'postTitle',
                            'control_source' => 'post',
                            'label' => __( 'Title', 'wcpf' ),
                            'placeholder' => __( 'Title', 'wcpf' ),
                            'required' => true
                        ) ),
                        new ControlText_Control( (
                            'key' => 'optionKey',
                            'label' => __( 'URL key', 'wcpf' ),
                            'placeholder' => __( 'option-key', 'wcpf' ),
                            'control_description' => __( 'The “URL key” is the URL-friendly version of the title. It is usually all lowercase and contains only letters, numbers, and hyphens', 'wcpf' ),
                            'required' => true
                        ) ),
                        new ControlSelect_Control( (
                            'key' => 'itemsSource',
                            'label' => __( 'Source of options', 'wcpf' ),
                            'control_description' => __( 'Select source of options, that will be using to filter products', 'wcpf' ),
                            'options' => (
                                'attribute' => __( 'Attribute', 'wcpf' ),
                                'category' => __( 'Category', 'wcpf' ),
                                'tag' => __( 'Tag', 'wcpf' ),
                                'taxonomy' => __( 'Taxonomy', 'wcpf' )
                            ),
                            'default_value' => 'attribute'
                        ) )
                    ),
                ),
                'visual' => (
                    'label' => __( 'Visual', 'wcpf' ),
                    'controls' => (
                        new ControlText_Control( (
                            'key' => 'cssClass',
                            'label' => __( 'CSS Class', 'wcpf' ),
                            'placeholder' => __( 'class-name', 'wcpf' )
                        ) )
                    )
                )
            )
        ));

        return $editor_panel;
    }
}


abstract class Abstract_Element extends Component {
    protected $project;

    protected $wp_post;

    /** getters, setters, options management **/

    public function get_default_options() {
        return ();
    }

    public abstract function get_element_slug();

    public abstract function get_element_title();

    public abstract function generate_controls();

    public abstract function render_template();
}

interface Filtering_Element_Interface {
    function get_filter_value( $default_value = null );

    function set_filter_value( $filter_value );

    function get_url_key();

    function apply_filter_to_query( WP_Query $product_query, $filter_value );
}