我正在尝试在Kohana中生成schema.org支持的微数据模式的嵌套分组选择列表（optgroup / option）。这是我的数组，__（'要翻译的东西'）：
public function get_supported_schemas()
{
return array(
__('EducationalOrganization') => array(
'CollegeOrUniversity' => __('CollegeOrUniversity'),
'ElementarySchool' => __('ElementarySchool'),
'HighSchool' => __('HighSchool'),
'MiddleSchool' => __('MiddleSchool'),
'Preschool' => __('Preschool'),
'School' => __('School'),
),
__('LocalBusiness') => array(
'AnimalShelter' => __('AnimalShelter'),
__('AutomotiveBusiness') => array(
'AutoBodyShop' => __('AutoBodyShop'),
'AutoDealer' => __('AutoDealer'),
'AutoPartsStore' => __('AutoPartsStore'),
'AutoRental' => __('AutoRental'),
'AutoRepair' => __('AutoRepair'),
'AutoWash' => __('AutoWash'),
'GasStation' => __('GasStation'),
'MotorcycleDealer' => __('MotorcycleDealer'),
'MotorcycleRepair' => __('MotorcycleRepair'),
),
'DryCleaningOrLaundry' => __('DryCleaningOrLaundry'),
__('EmergencyService') => array(
'FireStation' => __('FireStation'),
'Hospital' => __('Hospital'),
'PoliceStation' => __('PoliceStation'),
),
'EmploymentAgency' => __('EmploymentAgency'),
__('EntertainmentBusiness') => array(
//'AdultEntertainment' => __('AdultEntertainment'), // not supported by Yandex
'AmusementPark' => __('AmusementPark'),
'ArtGallery' => __('ArtGallery'),
'Casino' => __('Casino'),
//'ComedyClub' => __('ComedyClub'), // not supported by Yandex
'NightClub' => __('NightClub'),
),
__('FinancialService') => array(
'AccountingService' => __('AccountingService'),
'AutomatedTeller' => __('AutomatedTeller'),
'BankOrCreditUnion' => __('BankOrCreditUnion'),
'InsuranceAgency' => __('InsuranceAgency'),
),
__('FoodEstablishment') => array(
'Bakery' => __('Bakery'),
'BarOrPub' => __('BarOrPub'),
'Brewery' => __('Brewery'),
'CafeOrCoffeeShop' => __('CafeOrCoffeeShop'),
'FastFoodRestaurant' => __('FastFoodRestaurant'),
//'IceCreamShop' => __('IceCreamShop'), // not supported by Yandex
'Restaurant' => __('Restaurant'),
'Winery' => __('Winery'),
),
__('GovernmentOffice') => array(
'PostOffice' => __('PostOffice'),
),
__('HealthAndBeautyBusiness') => array(
'BeautySalon' => __('BeautySalon'),
'DaySpa' => __('DaySpa'),
'HairSalon' => __('HairSalon'),
'HealthClub' => __('HealthClub'),
'NailSalon' => __('NailSalon'),
'TattooParlor' => __('TattooParlor'),
),
__('HomeAndConstructionBusiness') => array(
'Electrician' => __('Electrician'),
'GeneralContractor' => __('GeneralContractor'),
//'HVACBusiness' => __('HVACBusiness'), // not supported by Yandex
//'HousePainter' => __('HousePainter'), // not supported by Yandex
//'Locksmith' => __('Locksmith'), // not supported by Yandex
'MovingCompany' => __('MovingCompany'),
'Plumber' => __('Plumber'),
'RoofingContractor' => __('RoofingContractor'),
),
'InternetCafe' => __('InternetCafe'),
'Library' => __('Library'),
__('LodgingBusiness') => array(
//'BedAndBreakfast' => __('BedAndBreakfast'), // not supported by Yandex
'Hostel' => __('Hostel'),
'Hotel' => __('Hotel'),
'Motel' => __('Motel'),
),
__('MedicalOrganization') => array(
'Dentist' => __('Dentist'),
'Hospital' => __('Hospital'),
'MedicalClinic' => __('MedicalClinic'),
'Optician' => __('Optician'),
'Pharmacy' => __('Pharmacy'),
'Physician' => __('Physician'),
'VeterinaryCare' => __('VeterinaryCare'),
),
__('ProfessionalService') => array(
'AccountingService' => __('AccountingService'),
'Attorney' => __('Attorney'),
'Dentist' => __('Dentist'),
'Electrician' => __('Electrician'),
'GeneralContractor' => __('GeneralContractor'),
//'HousePainter' => __('HousePainter'), // not supported by Yandex
//'Locksmith' => __('Locksmith'), // not supported by Yandex
'Notary' => __('Notary'),
'Plumber' => __('Plumber'),
'RoofingContractor' => __('RoofingContractor'),
),
'RadioStation' => __('RadioStation'),
'RealEstateAgent' => __('RealEstateAgent'),
'RecyclingCenter' => __('RecyclingCenter'),
'SelfStorage' => __('SelfStorage'),
'ShoppingCenter' => __('ShoppingCenter'),
__('SportsActivityLocation') => array(
'BowlingAlley' => __('BowlingAlley'),
'ExerciseGym' => __('ExerciseGym'),
//'GolfCourse' => __('GolfCourse'), // not supported by Yandex
'HealthClub' => __('HealthClub'),
'PublicSwimmingPool' => __('PublicSwimmingPool'),
'SkiResort' => __('SkiResort'),
'SportsClub' => __('SportsClub'),
'StadiumOrArena' => __('StadiumOrArena'),
'TennisComplex' => __('TennisComplex'),
),
__('Store') => array(
'AutoPartsStore' => __('AutoPartsStore'),
'BikeStore' => __('BikeStore'),
'BookStore' => __('BookStore'),
'ClothingStore' => __('ClothingStore'),
'ComputerStore' => __('ComputerStore'),
//'ConvenienceStore' => __('ConvenienceStore'), // not supported by Yandex
'DepartmentStore' => __('DepartmentStore'),
'ElectronicsStore' => __('ElectronicsStore'),
'Florist' => __('Florist'),
'FurnitureStore' => __('FurnitureStore'),
'GardenStore' => __('GardenStore'),
'GroceryStore' => __('GroceryStore'),
//'HardwareStore' => __('HardwareStore'), // not supported by Yandex
//'HobbyShop' => __('HobbyShop'), // not supported by Yandex
'HomeGoodsStore' => __('HomeGoodsStore'),
'JewelryStore' => __('JewelryStore'),
'LiquorStore' => __('LiquorStore'),
'MensClothingStore' => __('MensClothingStore'),
'MobilePhoneStore' => __('MobilePhoneStore'),
'MovieRentalStore' => __('MovieRentalStore'),
'MusicStore' => __('MusicStore'),
'OfficeEquipmentStore' => __('OfficeEquipmentStore'),
//'OutletStore' => __('OutletStore'), // not supported by Yandex
'PawnShop' => __('PawnShop'),
'PetStore' => __('PetStore'),
'ShoeStore' => __('ShoeStore'),
'SportingGoodsStore' => __('SportingGoodsStore'),
'TireShop' => __('TireShop'),
'ToyStore' => __('ToyStore'),
'WholesaleStore' => __('WholesaleStore'),
),
'TelevisionStation' => __('TelevisionStation'),
//'TouristInformationCenter' => __('TouristInformationCenter'), // not supported by Yandex
'TravelAgency' => __('TravelAgency'),
),
__('PerformingGroup') => array(
//'DanceGroup' => __('DanceGroup'), // not supported by Yandex
'MusicGroup' => __('MusicGroup'),
//'TheaterGroup' => __('TheaterGroup'), // not supported by Yandex
),
);
}
Kohana表单助手方法Form :: select（$ name，array $ options = NULL，$ selected = NULL，array $ attributes = NULL）仅适用于具有一个级别深度的关联数组，因此我们得到了这样的结果：< / p>
<select>
<option value="0">— Choose a scheme type</option>
<optgroup label="EducationalOrganization">
<option value="CollegeOrUniversity">CollegeOrUniversity</option>
<option value="ElementarySchool">ElementarySchool</option>
<option value="HighSchool">HighSchool</option>
<option value="MiddleSchool">MiddleSchool</option>
<option value="Preschool">Preschool</option>
<option value="School">School</option>
</optgroup>
<optgroup label="LocalBusiness">
<option value="AnimalShelter">AnimalShelter</option>
<option value="AutomotiveBusiness">Array</option>
<option value="DryCleaningOrLaundry">DryCleaningOrLaundry</option>
<option value="EmergencyService">Array</option>
<option value="EmploymentAgency">EmploymentAgency</option>
<option value="EntertainmentBusiness">Array</option>
<option value="FinancialService">Array</option>
<option value="FoodEstablishment">Array</option>
<option value="GovernmentOffice">Array</option>
<option value="HealthAndBeautyBusiness">Array</option>
<option value="HomeAndConstructionBusiness">Array</option>
<option value="InternetCafe">InternetCafe</option>
<option value="Library">Library</option>
<option value="LodgingBusiness">Array</option>
<option value="MedicalOrganization">Array</option>
<option value="ProfessionalService">Array</option>
<option value="RadioStation">RadioStation</option>
<option value="RealEstateAgent">RealEstateAgent</option>
<option value="RecyclingCenter">RecyclingCenter</option>
<option value="SelfStorage">SelfStorage</option>
<option value="ShoppingCenter">ShoppingCenter</option>
<option value="SportsActivityLocation">Array</option>
<option value="Store">Array</option>
<option value="TelevisionStation">TelevisionStation</option>
<option value="TravelAgency">TravelAgency</option>
</optgroup>
<optgroup label="PerformingGroup">
<option value="MusicGroup">MusicGroup</option>
</optgroup>
</select>
更深的级别打印为数组。所以我们只有一个级别列表深度。 Kohana表格::选择就在这里：
/**
* Creates a select form input.
*
* echo Form::select('country', $countries, $country);
*
* [!!] Support for multiple selected options was added in v3.0.7.
*
* @param string $name input name
* @param array $options available options
* @param mixed $selected selected option string, or an array of selected options
* @param array $attributes html attributes
* @return string
* @uses HTML::attributes
*/
public static function select($name, array $options = NULL, $selected = NULL, array $attributes = NULL)
{
// Set the input name
$attributes['name'] = $name;
if (is_array($selected))
{
// This is a multi-select, god save us!
$attributes[] = 'multiple';
}
if ( ! is_array($selected))
{
if ($selected === NULL)
{
// Use an empty array
$selected = array();
}
else
{
// Convert the selected options to an array
$selected = array( (string) $selected);
}
}
if (empty($options))
{
// There are no options
$options = '';
}
else
{
foreach ($options as $value => $name)
{
if (is_array($name))
{
// Create a new optgroup
$group = array('label' => $value);
// Create a new list of options
$_options = array();
foreach ($name as $_value => $_name)
{
// Force value to be string
$_value = (string) $_value;
// Create a new attribute set for this option
$option = array('value' => $_value);
if (in_array($_value, $selected))
{
// This option is selected
$option[] = 'selected';
}
// Change the option to the HTML string
$_options[] = '<option'.HTML::attributes($option).'>'.HTML::chars($_name, FALSE).'</option>';
}
// Compile the options into a string
$_options = "\n".implode("\n", $_options)."\n";
$options[$value] = '<optgroup'.HTML::attributes($group).'>'.$_options.'</optgroup>';
}
else
{
// Force value to be string
$value = (string) $value;
// Create a new attribute set for this option
$option = array('value' => $value);
if (in_array($value, $selected))
{
// This option is selected
$option[] = 'selected';
}
// Change the option to the HTML string
$options[$value] = '<option'.HTML::attributes($option).'>'.HTML::chars($name, FALSE).'</option>';
}
}
// Compile the options into a single string
$options = "\n".implode("\n", $options)."\n";
}
return '<select'.HTML::attributes($attributes).'>'.$options.'</select>';
}
感谢您的帮助！