ModelHelper.php

<?php

namespace mdm\widgets;

use yii\base\Model;

/**
 * Description of ModelHelper
 *
 * @author Misbahul D Munir <misbahuldmunir@gmail.com>
 * @since 1.0
 */
class ModelHelper
{

    /**
     * Populates a set of models with the data from end user.
     * This method is mainly used to collect tabular data input.
     * The data to be loaded for each model is `$data[formName][index]`, where `formName`
     * refers to the sort name of model class, and `index` the index of the model in the `$data` array.
     * If `$formName` is empty, `$data[index]` will be used to populate each model.
     * The data being populated to each model is subject to the safety check by [[setAttributes()]].
     * @param string $class Model class name.
     * @param array $data the data array. This is usually `$_POST` or `$_GET`, but can also be any valid array
     * supplied by end user.
     * @param string $formName the form name to be used for loading the data into the models.
     * If not set, it will use the sort name of called class.
     * @param Model[] $origin original models to be populated. It will be check using `$keys` with supplied data.
     * If same then will be used for result model.
     * @param array $options Option to model
     * - scenario for model.
     * - arguments The parameters to be passed to the class constructor as an array.
     * @return boolean|Model[] whether at least one of the models is successfully populated.
     */
    public static function createMultiple($class, $data, $formName = null, &$origin = [], $options = [])
    {
        $reflector = new \ReflectionClass($class);
        $args = isset($options['arguments']) ? $options['arguments'] : [];
        if ($formName === null) {
            /* @var $model Model */
            $model = empty($args) ? new $class() : $reflector->newInstanceArgs($args);
            $formName = $model->formName();
        }
        if ($formName != '') {
            $data = isset($data[$formName]) ? $data[$formName] : null;
        }
        if ($data === null) {
            return false;
        }

        $models = [];
        foreach ($data as $i => $row) {
            $model = null;
            if (isset($origin[$i])) {
                $model = $origin[$i];
                unset($origin[$i]);
            } else {
                $model = empty($args) ? new $class() : $reflector->newInstanceArgs($args);
            }
            if (isset($options['scenario'])) {
                $model->scenario = $options['scenario'];
            }
            $model->load($row, '');
            $models[$i] = $model;
        }
        return $models;
    }
}