public function Google::buildVariables in Charts 8.3

Creates a JSON Object formatted for Google Charts JavaScript to use.

Parameters

array $options: Options.

array $categories: Categories.

array $seriesData: Series data.

array $attachmentDisplayOptions: Attachment display options.

array $variables: Variables.

string $chartId: Chart ID.

array $customOptions: Overrides.

Overrides ChartInterface::buildVariables

File

modules/charts_google/src/Plugin/chart/Google.php, line 59

Class

Google

Define a concrete class for a Chart.

Namespace

Drupal\charts_google\Plugin\chart

Code

public function buildVariables(array $options, array $categories = [], array $seriesData = [], array $attachmentDisplayOptions = [], array &$variables, $chartId, array $customOptions = []) {
  $categoriesCount = count($categories);
  $seriesCount = count($seriesData);

  // Creates an array of the length of the series data.
  $dataCount = [];
  for ($x = 0; $x < $seriesCount; $x++) {
    $dataCountTemp = count($seriesData[$x]['data']);
    array_push($dataCount, $dataCountTemp);
  }

  /**
   * For pie and donut chart types, depending on the number of data fields,
   * the charts will either use data fields or label fields for the
   * categories. If only one data field is selected, then the label field
   * will serve as the categories. If multiple data fields are selected,
   * they will become the categories.
   * */
  if ($options['type'] == 'pie' || $options['type'] == 'donut') {
    if ($seriesCount > 1) {
      $dataTable = [];
      for ($j = 0; $j < $seriesCount; $j++) {
        $rowDataTable = [];
        $rowDataTabletemp = array_sum($seriesData[$j]['data']);
        array_push($rowDataTable, $rowDataTabletemp);
        array_unshift($rowDataTable, $seriesData[$j]['name']);
        array_push($dataTable, $rowDataTable);
      }
      $dataTableHeader = [
        'label',
        'value',
      ];
      array_unshift($dataTable, $dataTableHeader);
    }
    else {
      $dataTable = [];
      foreach ($categories as $j => $category) {
        $rowDataTable = [];
        for ($i = 0; $i < $seriesCount; $i++) {
          $rowDataTabletemp = $seriesData[$i]['data'][$j];
          array_push($rowDataTable, $rowDataTabletemp);
        }
        array_unshift($rowDataTable, $categories[$j]);
        array_push($dataTable, $rowDataTable);
      }
      $dataTableHeader = [];
      for ($r = 0; $r < $seriesCount; $r++) {
        array_push($dataTableHeader, $seriesData[$r]['name']);
      }
      array_unshift($dataTableHeader, 'label');
      array_unshift($dataTable, $dataTableHeader);
    }
  }
  elseif ($options['type'] == 'scatter') {

    // You will want to use the Scatter Field in the charts_fields module.
    $dataTable = [];
    foreach ($categories as $j => $category) {
      $rowDataTable = [];
      for ($i = 0; $i < $seriesCount; $i++) {

        // @todo: make work for multiple series.
        $rowDataTabletemp[0] = $seriesData[$i]['data'][$j][0];
        $rowDataTabletemp[1] = $seriesData[$i]['data'][$j][1];
        $rowDataTabletemp[2] = $categories[$j] . ': ' . json_encode($seriesData[$i]['data'][$j]);
        $rowDataTable = $rowDataTabletemp;
      }
      array_push($dataTable, $rowDataTable);
    }
    $dataTableHeader = [];
    for ($r = 0; $r < $seriesCount; $r++) {
      array_push($dataTableHeader, $seriesData[$r]['name']);
    }
    $role = new \stdClass();
    $role->role = 'tooltip';
    array_push($dataTableHeader, $role);
    array_unshift($dataTableHeader, 'label');
    array_unshift($dataTable, $dataTableHeader);
  }
  else {
    $dataTable = [];
    foreach ($categories as $j => $category) {
      $rowDataTable = [];
      for ($i = 0; $i < $seriesCount; $i++) {
        if (isset($seriesData[$i]['data'][$j])) {
          $rowDataTabletemp = $seriesData[$i]['data'][$j];
          array_push($rowDataTable, $rowDataTabletemp);
        }
        else {
          $rowDataTabletemp = 0;
          array_push($rowDataTable, $rowDataTabletemp);
        }
      }
      array_unshift($rowDataTable, $categories[$j]);
      array_push($dataTable, $rowDataTable);
    }
    $dataTableHeader = [];
    for ($r = 0; $r < $seriesCount; $r++) {
      array_push($dataTableHeader, $seriesData[$r]['name']);
    }
    array_unshift($dataTableHeader, 'label');
    array_unshift($dataTable, $dataTableHeader);
  }
  $googleOptions = $this
    ->createChartsOptions($options, $seriesData, $attachmentDisplayOptions);
  $googleChartType = $this
    ->createChartType($options);

  // Override Google classes. These will only override what is in
  // charts_google/src/Settings/Google/GoogleOptions.php
  // but you can use more of the Google Charts API, as you are not constrained
  // to what is in this class. See:
  // charts_google/src/Plugin/override/GoogleOverrides.php
  foreach ($customOptions as $option => $key) {
    $setter = 'set' . ucfirst($option);
    if (method_exists($googleOptions, $setter)) {
      $googleOptions
        ->{$setter}($customOptions[$option]);
    }
  }
  $variables['chart_type'] = 'google';
  $variables['attributes']['class'][0] = 'charts-google';
  $variables['attributes']['id'][0] = $chartId;
  $variables['content_attributes']['data-chart'][] = json_encode($dataTable);
  $variables['attributes']['google-options'][1] = json_encode($googleOptions);
  $variables['attributes']['google-chart-type'][2] = json_encode($googleChartType);
}