silverstripe-framework/Forms/CheckboxSetField.php

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<?php
namespace SilverStripe\Forms;
use SilverStripe\Core\Convert;
use SilverStripe\ORM\ArrayList;
use SilverStripe\ORM\FieldType\DBHTMLText;
use SilverStripe\View\Requirements;
use SilverStripe\View\ArrayData;
/**
* Displays a set of checkboxes as a logical group.
*
* ASSUMPTION -> IF you pass your source as an array, you pass values as an array too. Likewise objects are handled
* the same.
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*
* Example:
* <code>
* new CheckboxSetField(
* $name = "topics",
* $title = "I am interested in the following topics",
* $source = array(
* "1" => "Technology",
* "2" => "Gardening",
* "3" => "Cooking",
* "4" => "Sports"
* ),
* $value = "1"
* );
* </code>
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*
* <b>Saving</b>
* The checkbox set field will save its data in one of ways:
* - If the field name matches a many-many join on the object being edited, that many-many join will be updated to
* link to the objects selected on the checkboxes. In this case, the keys of your value map should be the IDs of
* the database records.
* - If the field name matches a database field, a comma-separated list of values will be saved to that field. The
* keys can be text or numbers.
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*
* @todo Document the different source data that can be used
* with this form field - e.g ComponentSet, ArrayList,
* array. Is it also appropriate to accept so many different
* types of data when just using an array would be appropriate?
*/
class CheckboxSetField extends MultiSelectField {
protected $schemaDataType = FormField::SCHEMA_DATA_TYPE_MULTISELECT;
/**
* @todo Explain different source data that can be used with this field,
* e.g. SQLMap, ArrayList or an array.
*
* @param array $properties
* @return DBHTMLText
*/
public function Field($properties = array()) {
$properties = array_merge($properties, array(
'Options' => $this->getOptions()
));
return FormField::Field($properties);
}
/**
* Gets the list of options to render in this formfield
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*
* @return ArrayList
*/
public function getOptions() {
$selectedValues = $this->getValueArray();
$defaultItems = $this->getDefaultItems();
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// Generate list of options to display
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$odd = false;
$formID = $this->ID();
$options = new ArrayList();
foreach($this->getSource() as $itemValue => $title) {
$itemID = Convert::raw2htmlid("{$formID}_{$itemValue}");
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$odd = !$odd;
$extraClass = $odd ? 'odd' : 'even';
$extraClass .= ' val' . preg_replace('/[^a-zA-Z0-9\-\_]/', '_', $itemValue);
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$itemChecked = in_array($itemValue, $selectedValues) || in_array($itemValue, $defaultItems);
$itemDisabled = $this->isDisabled() || in_array($itemValue, $defaultItems);
$options->push(new ArrayData(array(
'ID' => $itemID,
'Class' => $extraClass,
'Name' => "{$this->name}[{$itemValue}]",
'Value' => $itemValue,
'Title' => $title,
'isChecked' => $itemChecked,
'isDisabled' => $itemDisabled,
)));
}
$this->extend('updateGetOptions', $options);
return $options;
}
public function Type() {
return 'optionset checkboxset';
}
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}