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<?php |
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namespace Moo\HasOneSelector\Form; |
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use Exception; |
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use SilverStripe\Forms\CompositeField; |
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use SilverStripe\Forms\FormField; |
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use SilverStripe\Forms\GridField\GridFieldAddExistingAutocompleter; |
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use SilverStripe\Forms\GridField\GridFieldAddNewButton; |
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use SilverStripe\Forms\GridField\GridFieldComponent; |
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use SilverStripe\Forms\HiddenField; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\FieldType\DBHTMLText; |
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/** |
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* Class Field provides CMS field to manage selecting/adding/editing object within |
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* has_one relation of the current object being edited |
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*/ |
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class Field extends CompositeField |
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{ |
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/** |
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* Instance of form field that find and display selected record |
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* |
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* @var GridField |
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*/ |
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protected $gridField; |
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/** |
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* Instance of form field that holds the value |
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* |
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* @var FormField |
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*/ |
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protected $valueField; |
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/** |
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* HasOneSelector Field constructor |
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* |
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* @param string $name |
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* @param string $title |
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* @param DataObject $owner |
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* @param string $dataClass |
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*/ |
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public function __construct($name, $title, DataObject $owner, $dataClass = DataObject::class) |
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{ |
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// Create grid field |
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$this->initGridField($name, $title, $owner, $dataClass); |
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$this->addExtraClass('b-hasoneselector-field'); |
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// Ensure there is a left label to allow for field to be aligned with others |
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$this->leftTitle = ' '; |
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// Create composite field with hidden field holds the value and grid field to find and select has one relation |
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parent::__construct([ |
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$this->getValueHolderField(), |
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$this->gridField, |
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]); |
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} |
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/** |
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* Returns a "field holder" for this field. |
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* |
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* Forms are constructed by concatenating a number of these field holders. |
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* |
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* The default field holder is a label and a form field inside a div. |
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* |
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* @see FieldHolder.ss |
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* |
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* @param array $properties |
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* |
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* @return DBHTMLText |
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*/ |
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public function FieldHolder($properties = []) |
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{ |
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// Set title based on left title property |
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$properties['Title'] = $this->leftTitle; |
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// Render field holder |
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return parent::FieldHolder($properties); |
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} |
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/** |
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* Get instance of value holder field that hold the value of has one |
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* |
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* @return FormField |
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*/ |
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protected function getValueHolderField() |
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{ |
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if (is_null($this->valueField)) { |
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// Name of the has one relation |
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$recordName = $this->gridField->getName() . 'ID'; |
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// Field to hold the value |
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$this->valueField = HiddenField::create($recordName, '', ''); |
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} |
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return $this->valueField; |
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} |
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/** |
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* Initiate instance of grid field. This is a subclass of GridField |
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* |
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* @param string $name |
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* @param string $title |
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* @param DataObject $owner |
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* @param string $dataClass |
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* @return GridField |
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*/ |
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protected function initGridField($name, $title, DataObject $owner, $dataClass = DataObject::class) |
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{ |
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if (is_null($this->gridField)) { |
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$this->gridField = GridField::create($name, $title, $owner, $dataClass); |
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} |
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$this->gridField->setValueHolderField($this->getValueHolderField()); |
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return $this->gridField; |
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} |
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/** |
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* Remove the linkable grid field component |
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* |
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* @return $this |
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*/ |
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public function removeLinkable() |
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{ |
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// Remove grid field linkable component |
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$this->gridField->getConfig()->getComponents()->each(function ($component) { |
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if ($component instanceof GridFieldAddExistingAutocompleter) { |
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$this->gridField->getConfig()->removeComponentsByType(GridFieldAddExistingAutocompleter::class); |
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} |
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}); |
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return $this; |
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} |
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/** |
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* Add linkable grid field component |
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* |
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* @param GridFieldComponent|null $component |
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* @return $this |
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*/ |
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public function enableLinkable(GridFieldComponent $component = null) |
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{ |
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// Use default linkable grid field component |
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if (is_null($component)) { |
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$component = new GridFieldAddExistingAutocompleter('buttons-before-right'); |
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} |
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// Add grid field component |
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$this->gridField->getConfig()->addComponent($component); |
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return $this; |
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} |
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/** |
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* Remove the addable grid field component |
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* |
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* @return $this |
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*/ |
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public function removeAddable() |
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{ |
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// Remove grid field addable component |
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$this->gridField->getConfig()->getComponents()->each(function ($component) { |
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if ($component instanceof GridFieldAddNewButton) { |
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$this->gridField->getConfig()->removeComponentsByType(GridFieldAddNewButton::class); |
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} |
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}); |
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return $this; |
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} |
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/** |
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* Add addable grid field component |
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* |
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* @param GridFieldComponent|null $component |
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* @return $this |
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*/ |
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public function enableAddable(GridFieldComponent $component = null) |
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{ |
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// Use default addable grid field component |
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if (is_null($component)) { |
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$component = new GridFieldAddNewButton('buttons-before-left'); |
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} |
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// Add grid field component |
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$this->gridField->getConfig()->addComponent($component); |
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return $this; |
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} |
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/** |
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* Proxy any undefined methods to the grid field as this is the main field and the composite is wrapper to manage |
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* the field and value of has one |
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* |
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* @param string $method |
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* @param array $arguments |
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* @return mixed |
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* @throws Exception |
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*/ |
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public function __call($method, $arguments = []) |
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{ |
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if ($this->gridField instanceof GridField) { |
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return $this->gridField->{$method}(...$arguments); |
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} |
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return parent::__call($method, $arguments); |
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} |
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} |
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