public function process()
{
if (empty($this->data)) {
throw new InvalidConfigException('Missing required "data" property.');
}
$this->normalizeColumns();
// return simple array for single-column configs
if (count($this->columns) === 1) {
$column = $this->columns[0];
$data = ArrayHelper::getColumn($this->data->models, $column[0]);
return array_map($column[1], $data);
}
// use two-dimensional array for multi-column configs
$data = [];
foreach ($this->data->models as $model) {
$row = [];
foreach ($this->columns as $index => $column) {
$row[$index] = call_user_func($column[1], $model[$column[0]]);
}
$data[] = $row;
}
return $data;
} /**
* test basic data processing using current setup
*/
public function testBasicProcessing()
{
$data = [['date_measured' => '2016-03-01 03:00:00', 'open' => 3.14], ['date_measured' => '2016-03-02 03:00:00', 'open' => 4.14]];
$columns = [['date_measured', 'datetime'], 'open:int'];
$dataProvider = $this->setupDataProvider($data);
$helper = new SeriesDataHelper($dataProvider, $columns);
$results = $helper->process();
$this->assertEquals(strtotime('2016-03-01 03:00:00') * 1000, $results[0][0]);
$this->assertEquals(3, $results[0][1]);
$this->assertEquals(strtotime('2016-03-02 03:00:00') * 1000, $results[1][0]);
$this->assertEquals(4, $results[1][1]);
}