135 lines
2.8 KiB
PHP
135 lines
2.8 KiB
PHP
<?php
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namespace SilverStripe\Forms;
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use SilverStripe\Core\Convert;
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use SilverStripe\ORM\DataObjectInterface;
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use SilverStripe\ORM\Map;
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use SilverStripe\ORM\FieldType\DBField;
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/**
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* Read-only complement of {@link DropdownField}.
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*
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* Shows the "human value" of the dropdown field for the currently selected
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* value.
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*/
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class SingleLookupField extends SingleSelectField
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{
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/**
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* @var bool
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*/
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protected $readonly = true;
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/**
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* @return mixed|null
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*/
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protected function valueToLabel()
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{
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$value = $this->value;
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$source = $this->getSource();
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$source = ($source instanceof Map) ? $source->toArray() : $source;
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if (array_key_exists($value, $source ?? [])) {
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return $source[$value];
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}
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return null;
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}
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/**
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* Ignore validation as the field is readonly
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*
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* @param Validator $validator
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* @return bool
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*/
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public function validate($validator)
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{
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return true;
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}
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/**
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* Stubbed so invalid data doesn't save into the DB
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*
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* @param DataObjectInterface $record DataObject to save data into
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*/
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public function saveInto(DataObjectInterface $record)
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{
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}
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/**
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* @return SingleLookupField
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*/
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public function performReadonlyTransformation()
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{
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$clone = clone $this;
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return $clone;
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}
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/**
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* @return bool
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*/
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public function getHasEmptyDefault()
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{
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return false;
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}
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/**
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* @return string
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*/
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public function Type()
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{
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return 'single-lookup readonly';
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}
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/**
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* Note: we need to transform value in here because React fields do not use Field() to display value
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*
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* @return mixed
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*/
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public function Value()
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{
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$label = $this->valueToLabel();
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if (!is_null($label)) {
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return $label;
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}
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return parent::Value();
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}
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/**
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* @return string
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*/
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public function getTemplate()
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{
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// this field uses the same default template as LookupField
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return parent::getTemplate() ?: LookupField::class;
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}
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/**
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* Returns a readonly span containing the correct value.
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*
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* @param array $properties
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*
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* @return string
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*/
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public function Field($properties = [])
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{
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$label = $this->valueToLabel();
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if (!is_null($label)) {
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$attrValue = Convert::raw2xml($label);
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$inputValue = $this->value;
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} else {
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$attrValue = '<i>(' . _t('SilverStripe\\Forms\\FormField.NONE', 'none') . ')</i>';
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$inputValue = '';
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}
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$properties = array_merge($properties, [
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'AttrValue' => DBField::create_field('HTMLFragment', $attrValue),
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'InputValue' => $inputValue
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]);
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return parent::Field($properties);
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}
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}
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