silverstripe-framework/src/Forms/CheckboxField.php

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<?php
namespace SilverStripe\Forms;
/**
* Single checkbox field.
*/
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class CheckboxField extends FormField
{
protected $schemaDataType = FormField::SCHEMA_DATA_TYPE_BOOLEAN;
public function setValue($value, $data = null)
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{
$this->value = ($value) ? 1 : 0;
return $this;
}
public function dataValue()
{
return ($this->value) ? 1 : null;
}
public function Value()
{
return ($this->value) ? 1 : 0;
}
public function getAttributes()
{
$attributes = parent::getAttributes();
$attributes['value'] = 1;
if ($this->Required()) {
// Semantically, it doesn't make sense to have a required attribute
// on a field in which both checked and unchecked are allowable.
unset($attributes['aria-required']);
}
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return array_merge(
$attributes,
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array(
'checked' => ($this->Value()) ? 'checked' : null,
'type' => 'checkbox',
)
);
}
/**
* Returns a readonly version of this field
*/
public function performReadonlyTransformation()
{
$field = new CheckboxField_Readonly($this->name, $this->title, $this->value);
$field->setForm($this->form);
return $field;
}
}