View source
<?php
namespace Drupal\flot_examples\Controller;
use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\HttpFoundation\JsonResponse;
class Ajax extends ControllerBase {
public function content() {
$options = [
'lines' => [
'show' => TRUE,
],
'points' => [
'show' => TRUE,
],
'xaxis' => [
'tickDecimals' => 0,
'tickSize' => 1,
],
];
$data = array();
$text = [];
$text[] = $this
->t('Example of loading data dynamically with AJAX. Percentage change in GDP (source: <a href=":one">Eurostat</a>). Click the buttons below:', [
':one' => 'http://epp.eurostat.ec.europa.eu/tgm/table.do?tab=table&init=1&plugin=1&language=en&pcode=tsieb020',
]);
$text[] = $this
->t('The data is fetched over HTTP, in this case directly from text files. Usually the URL would point to some web server handler (e.g. a PHP page or Java/.NET/Python/Ruby on Rails handler) that extracts it from a database and serializes it to JSON');
$text[] = [
'setp' => TRUE,
0 => [
'#type' => 'button',
'#attributes' => [
'class' => [
'fetchSeries',
],
],
'#value' => $this
->t('First dataset'),
],
1 => $this
->t('[ <a href=":one">see data</a> ]', [
':one' => 'data-eu-gdp-growth/',
]),
2 => [
'#markup' => '<span></span>',
],
];
$text[] = [
0 => [
'#type' => 'button',
'#attributes' => [
'class' => [
'fetchSeries',
],
],
'#value' => $this
->t('Second dataset'),
],
1 => $this
->t('[ <a href=":one">see data</a> ]', [
':one' => 'data-japan-gdp-growth/',
]),
2 => [
'#markup' => '<span></span>',
],
'setp' => TRUE,
];
$text[] = [
0 => [
'#type' => 'button',
'#attributes' => [
'class' => [
'fetchSeries',
],
],
'#value' => $this
->t('Third dataset'),
],
1 => $this
->t('[ <a href=":one">see data</a> ]', [
':one' => 'data-usa-gdp-growth/',
]),
2 => [
'#markup' => '<span></span>',
],
'setp' => TRUE,
];
$text[] = $this
->t('If you combine AJAX with setTimeout, you can poll the server for new data.');
$text[] = [
[
'#type' => 'button',
'#attributes' => [
'class' => [
'dataUpdate',
],
],
'#value' => $this
->t('Poll for data'),
],
'setp' => TRUE,
];
$output['flot'] = [
'#type' => 'flot',
'#theme' => 'flot_examples',
'#data' => $data,
'#options' => $options,
'#text' => $text,
'#attached' => [
'library' => [
'flot_examples/ajax',
],
],
];
return $output;
}
public function json1($id) {
$data_set = [
[
1999,
3.0,
],
[
2000,
3.9,
],
[
2001,
2.0,
],
[
2002,
1.2,
],
[
2003,
1.3,
],
[
2004,
2.5,
],
[
2005,
2.0,
],
[
2006,
3.1,
],
[
2007,
2.9,
],
[
2008,
0.9,
],
];
$data_slice = array_slice($data_set, 0, $id);
$data = array(
'label' => 'Europe (EU27)',
'data' => $data_slice,
);
return new JsonResponse($data);
}
public function json2($id) {
$data_set = [
[
1999,
-0.1,
],
[
2000,
2.9,
],
[
2001,
0.2,
],
[
2002,
0.3,
],
[
2003,
1.4,
],
[
2004,
2.7,
],
[
2005,
1.9,
],
[
2006,
2.0,
],
[
2007,
2.3,
],
[
2008,
-0.7,
],
];
$data_slice = array_slice($data_set, 0, $id);
$data = array(
'label' => 'Japan',
'data' => $data_slice,
);
return new JsonResponse($data);
}
public function json3($id) {
$data_set = [
[
1999,
4.4,
],
[
2000,
3.7,
],
[
2001,
0.8,
],
[
2002,
1.6,
],
[
2003,
2.5,
],
[
2004,
3.6,
],
[
2005,
2.9,
],
[
2006,
2.8,
],
[
2007,
2.0,
],
[
2008,
1.1,
],
];
$data_slice = array_slice($data_set, 0, $id);
$data = array(
'label' => 'USA',
'data' => $data_slice,
);
return new JsonResponse($data);
}
}
