Question

我已经在外观>菜单下创建了一个名为“侧边栏菜单集合”的菜单

这是他们的阶层

Material
- marble
- onyx
- slate
- granite

Applications
- benchtops
- floors
- walls

products
- Slab
- pavers
- cladding

因此，当我在“材料”页面上时，我只希望列出其子菜单（大理石，ony玛瑙，板岩，花岗岩）。

如果我在“应用程序”页面中，它将显示（便笺本，地板，墙壁）。依此类推，我想根据页面的特色图片在每个子列表中添加特色图片。

这也将仅适用于父菜单（“材料”，“应用程序”，“产品”），并且如果您在子菜单上未显示任何列表，则为

Answer 1

下面的代码您好使用只会显示特定页面的子页面

wp_list_pages( $args = '' ) {
    $defaults = array(
        'depth'        => 1,
        'show_date'    => '',
        'date_format'  => get_option( 'date_format' ),
        'child_of'     => $post->ID,
        'exclude'      => '',
        'title_li'     => __( 'Pages' ),
        'echo'         => 1,
        'authors'      => '',
        'sort_column'  => 'menu_order, post_title',
        'link_before'  => '',
        'link_after'   => '',
        'item_spacing' => 'preserve',
        'walker'       => '',
    );

Answer 2

对此有一个答案，来自post。

这工作得很好，我现在唯一的问题是如何在每个链接上添加特色图片。

    <?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    tools:context=".SignUpFragment"
    app:cardUseCompatPadding="true"
    app:cardElevation="4dp"
    app:cardCornerRadius="3dp"
    android:layout_marginBottom="16dp"
    >
<ScrollView
android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="16dp">

    <TextView
        android:id="@+id/textViewname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginTop="8dp"
        android:text="@string/name1"
        android:textColor="@color/grey"
        android:textSize="14sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/signup_name"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="32dp"
        android:hint="@string/enter_your_name"
        android:inputType="text"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/textViewname"
        app:layout_constraintTop_toBottomOf="@+id/textViewname" />

    <TextView
        android:id="@+id/textViewemail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="@string/email2"
        android:textColor="@color/grey"
        android:textSize="14sp"
        app:layout_constraintStart_toStartOf="@+id/textViewname"
        app:layout_constraintTop_toBottomOf="@+id/signup_name" />

    <EditText
        android:id="@+id/signup_email"
        android:layout_width="0dp"
        android:layout_height="56dp"
        android:layout_marginTop="8dp"
        android:inputType="textEmailAddress"
        android:hint="@string/enter_your_email"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="@+id/signup_name"
        app:layout_constraintStart_toStartOf="@+id/signup_name"
        app:layout_constraintTop_toBottomOf="@+id/textViewemail" />

    <TextView
        android:id="@+id/textViewpassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="@string/password"
        android:textColor="@color/grey"
        android:textSize="14sp"
        app:layout_constraintStart_toStartOf="@+id/textViewemail"
        app:layout_constraintTop_toBottomOf="@+id/signup_email" />

    <EditText
        android:id="@+id/signup_password"
        android:layout_width="0dp"
        android:layout_height="56dp"
        android:layout_marginTop="8dp"
        android:inputType="textPassword"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="@+id/signup_email"
        app:layout_constraintStart_toStartOf="@+id/signup_email"
        app:layout_constraintTop_toBottomOf="@+id/textViewpassword" />

    <TextView
        android:id="@+id/textViewconfirmpassword"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="@string/confirm_password"
        android:textColor="@color/grey"
        android:textSize="14sp"
        app:layout_constraintStart_toStartOf="@+id/textViewpassword"
        app:layout_constraintTop_toBottomOf="@+id/signup_password" />
    <EditText
        android:id="@+id/signup_confirmpassword"
        android:layout_width="0dp"
        android:layout_height="56dp"
        android:layout_marginTop="8dp"
        android:inputType="textPassword"
        android:textSize="14sp"
        app:layout_constraintEnd_toEndOf="@+id/signup_password"
        app:layout_constraintStart_toStartOf="@+id/signup_password"
        app:layout_constraintTop_toBottomOf="@+id/textViewconfirmpassword" />

    <Button
        android:layout_width="0dp"
        android:layout_height="36dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="8dp"
        android:background="@color/colorPrimaryDark"

        android:text="@string/sign_up"
        android:textColor="@color/white"
        android:textSize="16sp"
        app:layout_constraintEnd_toEndOf="@+id/signup_confirmpassword"
     app:layout_constraintStart_toStartOf="@+id/signup_confirmpassword"
      app:layout_constraintTop_toBottomOf="@+id/signup_confirmpassword" />


</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.v7.widget.CardView>

用法

// add hook
add_filter( 'wp_nav_menu_objects', 'my_wp_nav_menu_objects_sub_menu', 10, 2 );
// filter_hook function to react on sub_menu flag
function my_wp_nav_menu_objects_sub_menu( $sorted_menu_items, $args ) {
  if ( isset( $args->sub_menu ) ) {
    $root_id = 0;

    // find the current menu item
    foreach ( $sorted_menu_items as $menu_item ) {
      if ( $menu_item->current ) {
        // set the root id based on whether the current menu item has a parent or not
        $root_id = ( $menu_item->menu_item_parent ) ? $menu_item->menu_item_parent : $menu_item->ID;
        break;
      }
    }

    // find the top level parent
    if ( ! isset( $args->direct_parent ) ) {
      $prev_root_id = $root_id;
      while ( $prev_root_id != 0 ) {
        foreach ( $sorted_menu_items as $menu_item ) {
          if ( $menu_item->ID == $prev_root_id ) {
            $prev_root_id = $menu_item->menu_item_parent;
            // don't set the root_id to 0 if we've reached the top of the menu
            if ( $prev_root_id != 0 ) $root_id = $menu_item->menu_item_parent;
            break;
          } 
        }
      }
    }
    $menu_item_parents = array();
    foreach ( $sorted_menu_items as $key => $item ) {
      // init menu_item_parents
      if ( $item->ID == $root_id ) $menu_item_parents[] = $item->ID;
      if ( in_array( $item->menu_item_parent, $menu_item_parents ) ) {
        // part of sub-tree: keep!
        $menu_item_parents[] = $item->ID;
      } else if ( ! ( isset( $args->show_parent ) && in_array( $item->ID, $menu_item_parents ) ) ) {
        // not part of sub-tree: away with it!
        unset( $sorted_menu_items[$key] );
      }
    }

    return $sorted_menu_items;
  } else {
    return $sorted_menu_items;
  }
}

根据WP菜单显示当前页面上的子页面列表

2 个答案: