public function Chartjs::preRender in Charts 5.0.x

Same name and namespace in other branches

1. 8.4 modules/charts_chartjs/src/Plugin/chart/Library/Chartjs.php \Drupal\charts_chartjs\Plugin\chart\Library\Chartjs::preRender()

Pre render.

Parameters

array $element: The element.

Return value

array The chart element.

Overrides ChartInterface::preRender

File

modules/charts_chartjs/src/Plugin/chart/Library/Chartjs.php, line 99

Class

Chartjs

Define a concrete class for a Chart.

Namespace

Drupal\charts_chartjs\Plugin\chart\Library

Code

public function preRender(array $element) {
  $chart_definition = [];
  if (!isset($element['#id'])) {
    $element['#id'] = Html::getUniqueId('chartjs-render');
  }
  $chart_definition = $this
    ->populateCategories($element, $chart_definition);
  $chart_definition = $this
    ->populateDatasets($element, $chart_definition);
  $chart_definition = $this
    ->populateOptions($element, $chart_definition);
  $element['#attached']['library'][] = 'charts_chartjs/chartjs';
  $element['#attributes']['class'][] = 'charts-chartjs';
  $element['#chart_definition'] = $chart_definition;
  return $element;
}