如何通过代码为ACF的Select字段添加选项并新增字段？

一、为Year选择字段添加2023、2024、2025等年份选项 #

给ACF的Select类型字段添加选项，只需在该字段的配置数组中加入choices键，键值为关联数组——数组的键是存储到数据库的值，值是后台显示的选项文本。

修改后的Year字段配置片段：

array (
    'key' => 'year',
    'label' => 'Year',
    'name' => 'year',
    'type' => 'select',
    'prefix' => '',
    'instructions' => '',
    'required' => 1,
    'conditional_logic' => 0,
    'wrapper' => array (
        'width' => '33%',
        'class' => 'year',
        'id' => '',
    ),
    'choices' => array(
        '2023' => '2023',
        '2024' => '2024',
        '2025' => '2025',
        // 可继续添加更多年份
    ),
    'default_value' => '',
    'placeholder' => '',
    'prepend' => '',
    'append' => '',
    'maxlength' => '',
    'readonly' => 0,
    'disabled' => 0,
)

二、在字段组中添加Week和Term字段 #

在字段组的fields数组中新增两个Select类型的字段配置，分别设置它们的选项、宽度等属性即可。以下是完整的字段组代码：

if( function_exists('acf_add_local_field_group') ):

acf_add_local_field_group(array (
    'key' => 'group_1',
    'title' => 'My Group',
    'fields' => array (
        // Year字段（已添加年份选项）
        array (
            'key' => 'year',
            'label' => 'Year',
            'name' => 'year',
            'type' => 'select',
            'prefix' => '',
            'instructions' => '',
            'required' => 1,
            'conditional_logic' => 0,
            'wrapper' => array (
                'width' => '33%',
                'class' => 'year',
                'id' => '',
            ),
            'choices' => array(
                '2023' => '2023',
                '2024' => '2024',
                '2025' => '2025',
            ),
            'default_value' => '',
            'placeholder' => '',
            'prepend' => '',
            'append' => '',
            'maxlength' => '',
            'readonly' => 0,
            'disabled' => 0,
        ),
        // Week字段（12个选项）
        array (
            'key' => 'week',
            'label' => 'Week',
            'name' => 'week',
            'type' => 'select',
            'prefix' => '',
            'instructions' => '',
            'required' => 1,
            'conditional_logic' => 0,
            'wrapper' => array (
                'width' => '33%',
                'class' => 'week',
                'id' => '',
            ),
            'choices' => array(
                'week_1' => 'Week 1',
                'week_2' => 'Week 2',
                'week_3' => 'Week 3',
                'week_4' => 'Week 4',
                'week_5' => 'Week 5',
                'week_6' => 'Week 6',
                'week_7' => 'Week 7',
                'week_8' => 'Week 8',
                'week_9' => 'Week 9',
                'week_10' => 'Week 10',
                'week_11' => 'Week 11',
                'week_12' => 'Week 12',
            ),
            'default_value' => '',
            'placeholder' => '',
            'readonly' => 0,
            'disabled' => 0,
        ),
        // Term字段（4个选项）
        array (
            'key' => 'term',
            'label' => 'Term',
            'name' => 'term',
            'type' => 'select',
            'prefix' => '',
            'instructions' => '',
            'required' => 1,
            'conditional_logic' => 0,
            'wrapper' => array (
                'width' => '33%',
                'class' => 'term',
                'id' => '',
            ),
            'choices' => array(
                'term_1' => 'Term 1',
                'term_2' => 'Term 2',
                'term_3' => 'Term 3',
                'term_4' => 'Term 4',
            ),
            'default_value' => '',
            'placeholder' => '',
            'readonly' => 0,
            'disabled' => 0,
        )
    ),
    'location' => array (
        array (
            array (
                'param' => 'post_type',
                'operator' => '==',
                'value' => 'post',
            ),
        ),
    ),
    'menu_order' => 0,
    'position' => 'normal',
    'style' => 'default',
    'label_placement' => 'top',
    'instruction_placement' => 'label',
    'hide_on_screen' => '',
));

endif;

补充说明 #

• 三个字段的width均设为33%，后台会横向排列成一行（总宽度接近100%）。
• 可根据需求调整required、default_value等属性，比如是否必填、默认选中项。
• choices数组的键可自定义，存储到数据库的是键值，后台显示对应的文本。

内容的提问来源于stack exchange，提问作者Adam Fletcher