silverstripe-userforms/code/formfields/UserFormsCheckboxSetField.php

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<?php
/**
* @package userforms
*/
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class UserFormsCheckboxSetField extends CheckboxSetField
{
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/**
* jQuery validate requires that the value of the option does not contain
* the actual value of the input.
*
* @return ArrayList
*/
public function getOptions()
{
$options = parent::getOptions();
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foreach ($options as $option) {
$option->Name = "{$this->name}[]";
}
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return $options;
}
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/**
* @inheritdoc
*
* @param Validator $validator
*
* @return bool
*/
public function validate($validator)
{
// get the previous values (could contain comma-delimited list)
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$previous = $value = $this->Value();
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if (is_string($value) && strstr($value, ",")) {
$value = explode(",", $value);
}
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// set the value as an array for parent validation
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$this->setValue($value);
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$validated = parent::validate($validator);
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// restore previous value after validation
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$this->setValue($previous);
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return $validated;
}
}