original_string: protected function getSparkline($metric)
      {
          // sparkline is always echoed, so we need to buffer the output
          $view = $this->getRowEvolutionGraph($graphType = 'sparkline', $metrics = array($metric => $metric));
  
          ob_start();
          $view->render();
          $spark = ob_get_contents();
          ob_end_clean();
  
          // undo header change by sparkline renderer
          Common::sendHeader('Content-type: text/html');
  
          // base64 encode the image and put it in an img tag
          $spark = base64_encode($spark);
          return '<img width="100" height="25" src="data:image/png;base64,' . $spark . '" />';
      }
code: protected function getSparkline($metric)
      {
          // sparkline is always echoed, so we need to buffer the output
          $view = $this->getRowEvolutionGraph($graphType = 'sparkline', $metrics = array($metric => $metric));
  
          ob_start();
          $view->render();
          $spark = ob_get_contents();
          ob_end_clean();
  
          // undo header change by sparkline renderer
          Common::sendHeader('Content-type: text/html');
  
          // base64 encode the image and put it in an img tag
          $spark = base64_encode($spark);
          return '<img width="100" height="25" src="data:image/png;base64,' . $spark . '" />';
      }
code_tokens: protected function getSparkline ( $ metric ) { // sparkline is always echoed, so we need to buffer the output $ view = $ this -> getRowEvolutionGraph ( $ graphType = 'sparkline' , $ metrics = array ( $ metric => $ metric ) ) ; ob_start ( ) ; $ view -> render ( ) ; $ spark = ob_get_contents ( ) ; ob_end_clean ( ) ; // undo header change by sparkline renderer Common :: sendHeader ( 'Content-type: text/html' ) ; // base64 encode the image and put it in an img tag $ spark = base64_encode ( $ spark ) ; return '<img width="100" height="25" src="data:image/png;base64,' . $ spark . '" />' ; }
docstring: Get the img tag for a sparkline showing a single metric
docstring_tokens: Get the img tag for a sparkline showing a single metric