代码功能齐全，经过测试。在函数中添加此项。php并检查。我给你举了一个例子，使用添加和编辑类别中的复选框。

function mytheme_custom_column( $columns )
{
    $columns[\'my_column\'] = \'My custom column\';
    return $columns;
}
add_filter( \'manage_edit-category_columns\' , \'mytheme_custom_column\' );




function mytheme_custom_column_fill( $content, $column_name, $term_id )
{

    if ( \'my_column\' == $column_name ) {
        // Get content using $term_id
        $content = get_term_meta( $term_id, \'show_category\', true );
// be specific your content gets correct conent
        if( !empty( $content ) )
        {
            //$content = \'your custom field content here\';
            return $content;
        }else{
          $content = \'-\';
          return $content;
        }
    }
}
add_filter( \'manage_category_custom_column\', \'mytheme_custom_column_fill\', 10, 3 );


// Add new term page
function mytheme_add_meta_fields( $taxonomy ) { ?>
    <div class="form-field term-group">
        <label for="show_category">
          <?php _e( \'Show Category\', \'codilight-lite\' ); ?> <input type="checkbox" id="show_category" name="show_category" value="yes" />
        </label>
    </div><?php
}
add_action( \'category_add_form_fields\', \'mytheme_add_meta_fields\', 10, 2 );

// Edit term page
function mytheme_edit_meta_fields( $term, $taxonomy ) {
    $show_category = get_term_meta( $term->term_id, \'show_category\', true ); ?>

    <tr class="form-field term-group-wrap">
        <th scope="row">
            <label for="show_category"><?php _e( \'Show Category\', \'codilight-lite\' ); ?></label>
        </th>
        <td>
            <input type="checkbox" id="show_category" name="show_category" value="yes" <?php echo ( $show_category ) ? checked( $show_category, \'yes\' ) : \'\'; ?>/>
        </td>
    </tr><?php
}
add_action( \'category_edit_form_fields\', \'mytheme_edit_meta_fields\', 10, 2 );

// Save custom meta
function mytheme_save_custom_field( $term_id, $tag_id ) {
    if ( isset( $_POST[ \'show_category\' ] ) ) {
        update_term_meta( $term_id, \'show_category\', \'yes\' );
    } else {
        update_term_meta( $term_id, \'show_category\', \'\' );
    }
}
add_action( \'created_category\', \'mytheme_save_custom_field\', 10, 2 );
add_action( \'edited_category\', \'mytheme_save_custom_field\', 10, 2 );