您可以尝试以下操作：(NOTE: 所有代码都未经测试，并对所有代码进行了注释，以便于后续操作和理解。代码还假设顶级术语已经具有taxonomy-{$taxonomy}-{$term}.php 模板）

add_filter( \'taxonomy_template\', function ( $template )
{
    // Get the current term object being viewed
    $current_term = get_queried_object();

    // We can restrict this to a single taxonomy, for example
    // if ( $current_term->taxonomy !== \'my_taxonomy\' )
        // return $template;

    /**
     * Check if current term is top level, if so, return the default $template which
     * should be template taxonomy-{$taxonomy}-{$term}.php if found
     */
    if ( $current_term->parent == 0 ) // Top level terms have parent of 0
        return $template;

    // We made it to here, so the term is not top level

    // We need to get the top level term of the current term
    $hierarchy = get_ancestors( $current_term->term_id, $current_term->taxonomy );
    // The parent ID will always be the last ID in the array returned by get_ancestors
    $parent_ID = end( $hierarchy );
    // Now we can get the top level term object
    $top_level_term = get_term_by( \'id\', $parent_ID, $current_term->taxonomy );

    /** 
     * Lets build our custom template name, add subfolder name if template
     * is in a subfolder, for example /subfolder/name-of-template.php
     */
    $custom_template = \'taxonomy-{$current_term->taxonomy}-{$top_level_term->slug}-{$current_term->slug}.php\';
    // Check if our custom template exist, if not, return default $template
    $locate_template = locate_template( $custom_template );
    if ( !$locate_template )
        return $template;

    // Finally, everything checked out, return our custom template
    return $template = $locate_template;
}); 

自定义模板零件可以创建taxonomy-{$taxonomy}-{$term}.php 模板和利用循环中的模板部分，根据子术语包括模板部分。这里最好的方法是编写一个自定义函数，然后在循环内调用该函数（或任何需要它的地方），而不是get_template_part()

为此，我们需要调用模板部分，如下所示：

顶级术语将为{$term}。php，比如africa.php

子术语将是{$term->parent}-{$term}.php 喜欢africa-cameroon.php

默认/回退模板content.php. 记住不要通过.php 函数模板名称的一部分

这是代码

/** 
 * Function to set template parts according to child term
 *
 * @param (string) $default Default template part to use like content.php
 * @return $template
 */
function get_custom_template_part( $default = \'\' )
{
    // Check if we have a value for $default, if not, return false
    if ( !$default )
        return false;

    // Sanitize the $default value
    $default = filter_var( $default, FILTER_SANITIZE_STRING );

    // Check if we are on a taxonomy page, if not, return the $default template
    if ( !is_tax() )
        return get_template_part( $default );

    // Get the current term being viewed
    $current_term = get_queried_object();

    /**
     * Set our custom variables
     * $top_level_term will hold the top level term object
     * $part will hold the current term slug if the current term is not top level
     */
    $top_level_term = \'\';
    $part = \'\';

    // Check if current term is top level, if not, get the top level parent
    if ( $current_term->parent != 0 ) {
        // We need to get the top level term of the current term
        $hierarchy = get_ancestors( $current_term->term_id, $current_term->taxonomy );
        // The parent ID will always be the last ID in the array returned by get_ancestors
        $parent_ID = end( $hierarchy );
        // Now we can get the top level term object
        $top_level_term = get_term_by( \'id\', $parent_ID, $current_term->taxonomy );
        $part = $current_term->slug;
    }

    // We now will set our template\'s name accordingly
    if ( $top_level_term ) {
        $name = $top_level_term->slug;
    } else {
        $name = $current_term->slug;
    }

    // We will now check if our template parts exist, if not, return our default
    if ( $part ) { // This means we have a child term
        $template = get_template_part( $name, $part );
    } else { // This means top level term
        $template = get_template_part( $name );
    }

    if ( $template )
        return $template;

    return get_template_part( $default );
}

您可以根据需要对此进行扩展，也可以在子文件夹中添加模板部分，然后只需将子文件夹名称附加到$name 函数内部

现在，您可以在taxonomy-{$taxonomy}-{$term}.php 或taxonomy-{$taxonomy}.php 样板

默认模板：content.php

get_custom_template_part( \'content\' );