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メガメニューウォーカー

メガメニューウォーカーを作成しようとしています。残念ながら、歩行者は私のコーディングの知識から完全に逃れています。私は本当にそれを動かすためにいくらかの助けを使うことができました。必要な機能は次のとおりです。

  • 第2レベルの<ul>を<section>で囲みます。 [完了]
  • ユーザーが第2レベルの<li>の<ul>にクラス "break"を設定するとき、その<li>を新しい<ul>の開始にします。リストの最初の<li>である場合は、何もしないで、空の番号なしリストが形成されないようにします。 [完了]
  • ユーザーがサブ<li>を持つ最初のレベルの<ul>にクラス "widget"を設定するとき、その<ul>の最後にウィジェットを追加します。 [完了]
  • 複数の列やウィジェットを含むドロップダウンを含む最初のレベルのmega-menu-columns-#要素にクラス<li>を追加します。 ＃は<ul>要素の数を表し、ウィジェットが存在する場合は+1を表します。 [完了]

これを行うためのコードが少しありますが、全部ではありません。下にカットアウトセクションがあります：

第2レベルの<ul>を<section>でラップします。

function start_lvl(&$output, $depth = 0, $args = array()) {
    if ($depth == 0) {
        $output .= "<section>";
    }
    $output .= "<ul class=\"sub-menu\">";
}
function end_lvl(&$output, $depth = 0, $args = array()) {
    $output .= "</ul>";
    if ($depth == 0) {
        $output .= "</section>\n";
    }
}

ウィジェットHTMLを生成します。

ob_start();
dynamic_sidebar("Navigation Callout");
$widget = ob_get_contents();
ob_end_clean();

出力HTMLは次のようになります。

<ul>
    <li id="menu-item-1" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1 mega-menu-columns-2">
        <a href="http://www.example.com/about/">
            About Us
        </a>
        <section>
            <ul class="sub-menu">
                <li id="menu-item-2" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2">
                    <a href="http://www.example.com/about/company-profile/">
                        Company Profile
                    </a>
                </li>
                <li id="menu-item-3" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3">
                    <a href="http://www.example.com/about/leadership-team/">
                        Leadership Team
                    </a>
                </li>
                <li id="menu-item-4" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-4">
                    <a href="http://www.example.com/about/professional-affiliations/">
                        Professional Affiliations
                    </a>
                </li>
            </ul>
            <ul class="sub-menu">
                <li id="menu-item-5" class="break menu-item menu-item-type-post_type menu-item-object-page menu-item-5">
                    <a href="http://www.example.com/about/clients/">
                        Clients
                    </a>
                </li>
                <li id="menu-item-6" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-6">
                    <a href="http://www.example.com/about/partnerships/">
                        Partnerships
                    </a>
                </li>
            </ul>
        </section>
    </li>
    <li id="menu-item-7" class="widget menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7 mega-menu-columns-3">
        <a href="http://www.example.com/services/">
            Services
        </a>
        <section>
            <ul class="sub-menu">
                <li id="menu-item-8" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-8">
                    <a href="http://www.example.com/services/civil-engineering/">
                        Civil Engineering
                    </a>
                </li>
                <li id="menu-item-9" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-9">
                    <a href="http://www.example.com/services/land-planning/">
                        Land Planning
                    </a>
                </li>
                <li id="menu-item-10" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-10">
                    <a href="http://www.example.com/services/surveying/">
                        Surveying
                    </a>
                </li>
            </ul>
            <ul class="sub-menu">
                <li id="menu-item-11" class="break menu-item menu-item-type-post_type menu-item-object-page menu-item-11">
                    <a href="http://www.example.com/services/information-technology/">
                        Information Technology
                    </a>
                </li>
                <li id="menu-item-12" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-12">
                    <a href="http://www.example.com/services/subsurface-utility-engineering/">
                        Subsurface Utility Engineering
                    </a>
                </li>
            </ul>
            <aside>
                <h6>Widget Title</h6>
                <p>Maecenas quis semper arcu. Quisque consequat risus nisi. Sed venenatis urna porta eros malesuada euismod. Nulla sollicitudin fringilla posuere. Nulla et tellus eu nisi sodales convallis non vel tellus.</p>
            </aside>
        </section>
    </li>
    <li id="menu-item-13" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-15">
        <a href="http://www.example.com/contact/">
            Contact Us
        </a>
    </li>
</ul>

更新： 私のカウンターは私に悲しみを与えている。彼らはサブメニューが生成された後に数えているだけで、それは私を助けません。このスクリーンショットを見て、私の言っていることを理解してください。

一番上の数字はstart_elに取り込まれています。下の数字はend_elに引き込まれています。お分かりのように、一番上の数字は私の.breaksを数えていません。それらは$depth = 0で数えられているのでそれらはウィジェットクラスを数えます。誰かがこの恐ろしさから私を救ってください！

// mega menu walker
/*
    ONE REMAINING BUG:
    - Need to add class to LI containing mega-menu-columns-#
*/
class megaMenuWalker extends Walker_Nav_Menu {
    private $column_limit = 3; /* needs to be set for each site */
    private $show_widget = false;
    private $column_count = 0;
    static $li_count = 0;
    function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
        $classes = empty($item->classes) ? array() : (array) $item->classes;
        $item_id = $item->ID;
        if ($depth == 0) self::$li_count = 0;
        if ($depth == 0 && in_array("widget", $classes)) {
            $this->show_widget = true;
            $this->column_count++;
        }
        if ($depth == 1 && self::$li_count == 1) {
            $this->column_count++;
        }
        if ($depth == 1 && in_array("break", $classes) && self::$li_count != 1 && $this->column_count < $this->column_limit) {
            $output .= "</ul><ul class=\"sub-menu\">";
            $this->column_count++;
        }
        if ($depth == 0 && $this->column_count > 0) {
            $mega_menu_class = " mega-menu-columns-" . $this->column_count;
        }
        $class_names = join(" ", apply_filters("nav_menu_css_class", array_filter($classes), $item));
        $class_names = " class=\"" . esc_attr($class_names . $mega_menu_class) . "\"";
        $output .= sprintf(
            "<li id=\"menu-item-%s\"%s><a href=\"%s\">%s</a>",
            $item_id,
            $class_names,
            $item->url,
            $item->title
        );
        self::$li_count++;
    }
    function start_lvl(&$output, $depth = 0, $args = array()) {
        if ($depth == 0) {
            $output .= "<section>";
        }
        $output .= "<ul class=\"sub-menu\">";
    }
    function end_lvl(&$output, $depth = 0, $args = array()) {
        $output .= "</ul>";
        if ($depth == 0) {
            if ($this->show_widget) {
                ob_start();
                dynamic_sidebar("Navigation Callout");
                $widget = ob_get_contents();
                ob_end_clean();
                $output .= $widget;
                $this->show_widget = false;
            }
            $output .= "</section>";
        }
    }
    function end_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
        if ($depth == 0 && $this->column_count > 0) {
            /* needs to be added to opening level 0 li */
            $column_count_class = " mega-menu-columns-" . $this->column_count;
            $output .= $column_count_class;
            /* end */
            $this->column_count = 0;
        }
        $output .= "</li>";
    }
}

UPDATE 2： これはmega-menu-columns-クラスがどうやって数を数えるべきかを説明するコメント付きの出力例です。

<ul>
    <!-- +1 because this has a class of "widget" -->
    <li id="menu-item-1" class="widget menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-1 mega-menu-columns-3">
        <a href="http://www.example.com/about/">
            About Us
        </a>
        <!-- +1 because a drop down exists -->
        <!-- gets added by my walker -->
        <section>
        <!-- end gets added by my walker -->
            <ul class="sub-menu">
                <!-- +0 because this "break" is the first child -->
                <li id="menu-item-2" class="break menu-item menu-item-type-post_type menu-item-object-page menu-item-2">
                    <a href="http://www.example.com/about/company-profile/">
                        Company Profile
                    </a>
                    <ul>
                        <!-- +0 because this "break" is in level 2 -->
                        <li id="menu-item-3" class="break menu-item menu-item-type-post_type menu-item-object-page menu-item-3">
                            <a href="http://www.example.com/about/our-team/">
                                Our Team
                            </a>
                        </li>
                    </ul>
                </li>
                <li id="menu-item-4" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-4">
                    <a href="http://www.example.com/about/leadership-team/">
                        Leadership Team
                    </a>
                </li>
                <li id="menu-item-5" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-5">
                    <a href="http://www.example.com/about/professional-affiliations/">
                        Professional Affiliations
                    </a>
                </li>
            <!-- gets added by my walker -->
            </ul>
            <ul class="sub-menu">
            <!-- end gets added by my walker -->
                <!-- +1 because this "break" is in level 1 and not the first child -->
                <li id="menu-item-6" class="break menu-item menu-item-type-post_type menu-item-object-page menu-item-6">
                    <a href="http://www.example.com/about/clients/">
                        Clients
                    </a>
                </li>
                <li id="menu-item-7" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-7">
                    <a href="http://www.example.com/about/partnerships/">
                        Partnerships
                    </a>
                </li>
            </ul>
            <!-- gets added by my walker for .widget -->
            <section>
                <header>
                    <h1>Widget Title</h1>
                </header>
                <p>This is a widget. It was hard to make appear!</p>
            </section>
            <!-- end gets added by my walker for .widget -->
        <!-- gets added by my walker -->
        </section>
        <!-- end gets added by my walker -->
    </li>
</ul>

更新： これが私の最後のWalker and Functionsです。これは 正確に 私がそれを望んでいたことを行います。助けてくれてありがとう！

// mega menu walker
class megaMenuWalker extends Walker_Nav_Menu {
    private $column_limit = 3;
    private $show_widget = false;
    private $column_count = 0;
    static $li_count = 0;
    function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
        $classes = empty($item->classes) ? array() : (array) $item->classes;
        $item_id = $item->ID;
        if ($depth == 0) {
            self::$li_count = 0;
        }
        if ($depth == 0 && in_array("widget", $classes)) {
            $this->show_widget = true;
            $this->column_count++;
        }
        if ($depth == 1 && self::$li_count == 1) {
            $this->column_count++;
        }
        if ($depth == 1 && in_array("break", $classes) && self::$li_count != 1 && $this->column_count < $this->column_limit) {
            $output .= "</ul><ul class=\"sub-menu\">";
            $this->column_count++;
        }
        $class_names = join(" ", apply_filters("nav_menu_css_class", array_filter($classes), $item)); // set up the classes array to be added as classes to each li
        $class_names = " class=\"" . esc_attr($class_names) . "\"";
        $output .= sprintf(
            "<li id=\"menu-item-%s\"%s><a href=\"%s\">%s</a>",
            $item_id,
            $class_names,
            $item->url,
            $item->title
        );
        self::$li_count++;
    }
    function start_lvl(&$output, $depth = 0, $args = array()) {
        if ($depth == 0) {
            $output .= "<section>";
        }
        $output .= "<ul class=\"sub-menu\">";
    }
    function end_lvl(&$output, $depth = 0, $args = array()) {
        $output .= "</ul>";
        if ($depth == 0) {
            if ($this->show_widget) {
                ob_start();
                dynamic_sidebar("Navigation Callout");
                $widget = ob_get_contents();
                ob_end_clean();
                $output .= $widget;
                $this->show_widget = false;
            }
            $output .= "</section>";
        }
    }
    function end_el(&$output, $item, $depth = 0, $args = array(), $id = 0) {
        if ($depth == 0 && $this->column_count > 0) {
            $this->column_count = 0;
        }
        $output .= "</li>";
    }
}

// add mega-menu-columns-# classes
function add_column_number($items, $args) {
    static $column_limit = 3;
    static $post_id = 0;
    static $x_key = 0;
    static $column_count = 0;
    static $li_count = 0;
    $tmp = array();
    foreach($items as $key => $item) {
        if (0 == $item->menu_item_parent) {
            $x_key = $key;
            $post_id = $item->ID;
            $column_count = 0;
            $li_count = 0;
            if (in_array("widget", $item->classes, 1)) {
                $column_count++;
            }
        }
        if ($post_id == $item->menu_item_parent) {
            $li_count++;
            if ($column_count < $column_limit && $li_count == 1) {
                $column_count++;
            }
            if (in_array("break", $item->classes, 1) && $li_count > 1 && $column_count < $column_limit) {
                $column_count++;
            }
            $tmp[$x_key] = $column_count;
        }
    }
    foreach($tmp as $key => $value) {
        $items[$key]->classes[] = sprintf("mega-menu-columns-%d", $value);
    }
    unset($tmp);
    return $items;
};

// add the column classes
add_filter("wp_nav_menu_args", function($args) {
    if ($args["walker"] instanceof megaMenuWalker) {
        add_filter("wp_nav_menu_objects", "add_column_number");
    }
    return $args;
});

// stop the column classes function
add_filter("wp_nav_menu", function( $nav_menu ) {
    remove_filter("wp_nav_menu_objects", "add_column_number");
    return $nav_menu;
});
phpfunctionsmenusnavigationwalker
10
JacobTheDev

私が問題の設定を正しく理解していれば、wp_nav_menu_objectsフィルタ内で break および widget クラスのカウントを試みることができます。

これは更新された例です、それは余分なデバッグ部分のためにかなり拡張されています。

add_filter( 'wp_nav_menu_objects', 
    function( $items, $args  ) {

        // Only apply this for the 'primary' menu:    
        if( 'primary' !== $args->theme_location ) 
            return $items;

        // Here "x_" means the latest root li (depth 0)
        static $x_pid           = 0;      // post ID of the latest root li (depth 0) 
        static $x_key           = 0;      // array key of the latest root li (depth 0)
        static $x_cols          = 0;      // n breaks or widgets gives n+1 columns  
        static $x_has_dropdown  = false;  // if the latest root li (depth 0) has dropdown

        // Internals:
        $tmp            = array();  
        $debug_string   = '';
        $show_debug     = true;  // Edit this to your needs:

        foreach( $items as $key => $item )
        {
            // Debug:
            $debug                              = array();
            $debug['ID']                        = $item->ID;
            $debug['title']                     = $item->title;
            $debug['key']                       = $key;
            $debug['x_key']                     = $x_key;
            $debug['depth']                     = '';
            $debug['menu_item_parent']          = $item->menu_item_parent;
            $debug['has_widget_class']          = 0;
            $debug['is_depth_1_first_child']    = 0;
            $debug['x_has_dropdown']            = 0;
            $debug['has_break_class']           = 0;
            $debug['x_cols_increase']           = 0;

            // Collect columns increaments:
            $inc = 0;

            // Depth 0:
            if( 0 == $item->menu_item_parent )
            {
                $debug['depth'] = 0;

                // Resets:
                $x_key          = $key;
                $x_pid          = $item->ID;                            
                $x_cols         = 0;
                $x_has_dropdown = false;

                // If widget class exists:
                if( in_array( 'widget', $item->classes, 1 ) )
                {
                    $debug['has_widget_class'] = '1';
                    $inc++; 
                }       
            }

            // Depth 1:
            if( $x_pid == $item->menu_item_parent )
            {   
                $debug['depth'] = 1;

                // Increase the columns count for an existing dropdown:
                if( ! $x_has_dropdown )
                {
                    $inc++;
                    $x_has_dropdown = true;
                }

                // Check for the 'break' class: 
                if( in_array( 'break', $item->classes, 1 ) )
                {
                    $debug['x_has_break_class'] = 1;

                    // First li child:
                    if( $x_key+1 == $key+0 )
                    {
                        $debug['is_depth_1_first_child'] = 1;
                    }
                    else
                    {
                        $debug['is_depth_1_first_child'] = 0;
                        $inc++; 
                    }
                }

                $t[$x_key] = $x_cols;
            }           

            $debug['x_has_dropdown'] = (int) $x_has_dropdown;

            // Increase the columns count:
            $debug['x_cols_increase'] = $inc;           
            $x_cols += $inc;
            $debug['x_cols'] = $x_cols;

            // Collect the debug:
            $debug_string .= print_r( $debug, 1 );
        } // end foreach

        // Show debug info:
        if( $show_debug ) 
            printf( "<!-- debug: %s -->", $debug_string );

        // Insert the new 'mega menu' class to the corresponding menu object:
        foreach( $t as $key => $value )
        {
            $items[$key]->classes[] = sprintf( 'mega-menu-columns-%d', $value );
        }

        return $items;

    }
, PHP_INT_MAX, 2 );

あなたの現在のメニューツリーで、私はこのデバッグ情報を得ます：

<!-- debug: Array
(
    [ID] => 3316
    [title] => About Us
    [key] => 1
    [x_key] => 0
    [depth] => 0
    [menu_item_parent] => 0
    [has_widget_class] => 1
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 0
    [has_break_class] => 0
    [x_cols_increase] => 1
    [x_cols] => 1
)
Array
(
    [ID] => 3317
    [title] => Company Profile
    [key] => 2
    [x_key] => 1
    [depth] => 1
    [menu_item_parent] => 3316
    [has_widget_class] => 0
    [is_depth_1_first_child] => 1
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 1
    [x_has_break_class] => 1
    [x_cols] => 2
)
Array
(
    [ID] => 3318
    [title] => Our Team
    [key] => 3
    [x_key] => 1
    [depth] => 
    [menu_item_parent] => 3317
    [has_widget_class] => 0
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 0
    [x_cols] => 2
)
Array
(
    [ID] => 3319
    [title] => Leadership Team
    [key] => 4
    [x_key] => 1
    [depth] => 1
    [menu_item_parent] => 3316
    [has_widget_class] => 0
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 0
    [x_cols] => 2
)
Array
(
    [ID] => 3320
    [title] => Professional Affiliations
    [key] => 5
    [x_key] => 1
    [depth] => 1
    [menu_item_parent] => 3316
    [has_widget_class] => 0
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 0
    [x_cols] => 2
)
Array
(
    [ID] => 3321
    [title] => Clients
    [key] => 6
    [x_key] => 1
    [depth] => 1
    [menu_item_parent] => 3316
    [has_widget_class] => 0
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 1
    [x_has_break_class] => 1
    [x_cols] => 3
)
Array
(
    [ID] => 3322
    [title] => Partnerships
    [key] => 7
    [x_key] => 1
    [depth] => 1
    [menu_item_parent] => 3316
    [has_widget_class] => 0
    [is_depth_1_first_child] => 0
    [x_has_dropdown] => 1
    [has_break_class] => 0
    [x_cols_increase] => 0
    [x_cols] => 3
)
 -->

WalkerオブジェクトがmegaMenuWalkerクラスであるかどうかを確認したい場合は、次のようにします。

if( ! is_object( $args->walker ) || ! is_a( $args->walker, 'megaMenuWalker' ) )
    return $items;

の代わりに

if( 'primary' !== $args->theme_location ) 
            return $items;

これが役に立つことを願っています。

7
birgire