[英]Twig template access old variable value in Symfony 3.4
I'm struggling with a problem in Symfony 3.4 related to Twig. 我在Symfony 3.4中与Twig有关的问题中苦苦挣扎。 Basically, I have two variables and I want to use them as values for javascript in a template.
基本上,我有两个变量,我想将它们用作模板中javascript的值。 These two variables (
$selected_tipoopera
and $selected_year
) can be changed by a form which is managed by the same controller that renders the template. 这两个变量(
$selected_tipoopera
和$selected_year
)可以通过一种形式进行更改,该形式由呈现模板的同一控制器管理。
The controller's code look like this: 控制器的代码如下所示:
$selected_tipo_opera = "S"; // the default value
$selected_year = ""; // the default value
// other stuff / code (form creation and management of form events)
$form_operas_type_and_year->handleRequest($request);
if($form_operas_type_and_year->isSubmitted() && $form_operas_type_and_year->isValid()){
$selected_tipo_opera = $form_operas_type_and_year->getData()["operas_type"];
$selected_year = $form_operas_type_and_year->getData()["year"];
}
// fetch data based on $selected_tipo_opera and $selected_year
return $this->render('frontend/opere.html.twig',
array(
"opere" => $opere,
"form_operas_type_and_year" => $form_operas_type_and_year->createView(),
"selected_tipoopera" => $selected_tipo_opera,
"selected_year" => $selected_year
));
The strange thing is that the controller catches the change of values for the two variables whereas the twig template print always "S" and "" for $selected_tipoopera
and $selected_year
. 奇怪的是,控制器捕获了两个变量的值变化,而树枝模板始终为
$selected_tipoopera
和$selected_year
打印“ S”和“”。
What I'am doing wrong?It is something related with the form? 我做错了什么与表格有关?
thanks in advance for any suggestion. 预先感谢您的任何建议。
UPDATE 更新
<script type="text/javascript">
var year = "{{ selected_year }}";
var stp = "{{ selected_tipoopera }}";
</script>
Here's something that might help. 这可能会有所帮助。 Background: the home page of the site shows a chart created with highcharts , a javascript chart generator.
背景:该网站的首页显示了一个由highcharts创建的图表,该图表是javascript图表生成器。 Because the chart needs values from the database I needed to create a Twig template that could be used as javascript.
因为图表需要数据库中的值,所以我需要创建一个Twig模板以用作javascript。
The keys: a ...js.twig
file containing javascript, a controller action to render (not renderView) the template, and a render(controller(...))
in the page(s) where the script is required to insert the script. 关键:一个包含JavaScript的
...js.twig
文件,一个用于渲染(而非renderView)模板的控制器动作以及一个需要插入脚本的页面中的render(controller(...))
。剧本。
So I have: 所以我有:
script.js.twig script.js.twig
$(document).ready(function () {
var options = {
chart: {
type: 'line'
},
title: {
text: 'Distributions, FY{{ chart.fy }} to date'
},
xAxis: {
categories: [{% for category in chart.categories %}{{category|raw}}{%endfor%}]
},
yAxis: {
title: {
text: 'Distributions'
}
},
series: {{ chart.series|raw }}
};
$('#linechart').highcharts(options);
})
And in index.html.twig" 并且在index.html.twig中”
<script type="text/javascript">
{{ render(controller('AppBundle:Default:script')) }}
</script>
and in ../Controller/Default/script 并在../Controller/Default/script中
public function scriptAction(FYChart $fiscalYearChart)
{
$chart = $fiscalYearChart->getDistsFYToDate();
return $this->render('Default/script.js.twig', array(
'chart' => $chart,
));
}
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