protected function normalizeAttributes()
{
if ($this->attributes === null) {
if ($this->model instanceof Model) {
$this->attributes = $this->model->attributes();
} elseif (is_object($this->model)) {
$this->attributes = $this->model instanceof Arrayable ? array_keys($this->model->toArray()) : array_keys(get_object_vars($this->model));
} elseif (is_array($this->model)) {
$this->attributes = array_keys($this->model);
} else {
throw new InvalidConfigException('The "model" property must be either an array or an object.');
}
sort($this->attributes);
}
foreach ($this->attributes as $i => $attribute) {
if (is_string($attribute)) {
if (!preg_match('/^([\\w\\.]+)(:(\\w*))?(:(.*))?$/', $attribute, $matches)) {
throw new InvalidConfigException('The attribute must be specified in the format of "attribute", "attribute:format" or "attribute:format:label"');
}
$attribute = ['attribute' => $matches[1], 'format' => isset($matches[3]) ? $matches[3] : 'text', 'label' => isset($matches[5]) ? $matches[5] : null];
}
if (!is_array($attribute)) {
throw new InvalidConfigException('The attribute configuration must be an array.');
}
if (isset($attribute['visible']) && !$attribute['visible']) {
unset($this->attributes[$i]);
continue;
}
if (!isset($attribute['format'])) {
$attribute['format'] = 'text';
}
if (isset($attribute['attribute'])) {
$attributeName = $attribute['attribute'];
if (!isset($attribute['label'])) {
$attribute['label'] = $this->model instanceof Model ? $this->model->getAttributeLabel($attributeName) : Inflector::camel2words($attributeName, true);
}
if (!array_key_exists('value', $attribute)) {
$attribute['value'] = ArrayHelper::getValue($this->model, $attributeName);
}
} elseif (!isset($attribute['label']) || !array_key_exists('value', $attribute)) {
throw new InvalidConfigException('The attribute configuration requires the "attribute" element to determine the value and display label.');
}
if ($attribute['value'] instanceof \Closure) {
$attribute['value'] = call_user_func($attribute['value'], $this->model, $this);
}
$this->attributes[$i] = $attribute;
}
}