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<?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 $clone; |
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} |
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/** |
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* @return bool |
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*/ |
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public function getHasEmptyDefault() |
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{ |
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return false; |
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} |
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/** |
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* @return string |
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*/ |
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public function Type() |
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{ |
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return 'single-lookup readonly'; |
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} |
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/** |
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* Note: we need to transform value in here becaue React fields do not use Field() to display value |
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* |
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* @return mixed |
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*/ |
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public function Value() |
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{ |
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$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 $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, array( |
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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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silverstripe /
silverstripe-framework
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