twig automatic convert string to day - symfony

Question

I want to convert a string value to day by tapping in a widget, e.g. 24 → 1
{% block convert_day %}
<td>{{ form_widget(form['crush']) }}</td>
<td><!-- displaying my value in day --></td>
{% endblock %}
No It doesn't work !
To be more clear ,I want to do something like that but just display number of days : http://www.convertworld.com/en/time/Days.html

Answer 1

{{ hourValue / 24 }}
Or, if you want to round the value to two decimal places:
{{ hourValue / 24 | number_format(2, ".", ",") }}
Documentation:
http://twig.sensiolabs.org/doc/templates.html#math
http://twig.sensiolabs.org/doc/filters/number_format.html
edit
Alternatively, you can put the precision into the form instance itself. When you create your form, you're probably doing something like this in your controller (or if the form has its own class, you're doing something similar in the buildForm() method of that class):
$form = $this->createFormBuilder($entity)
->add('name', 'text')
->getForm();
When you add your crush field, you can then specify the number of decimal places that should be represented on the form by including the precision option:
$form = $this->createFormBuilder($entity)
->add('name', 'text')
->add('crush', 'number', array('precision' => 3) )
->getForm();
The form will then round the value before inserting it into the database.
Documentation:
http://symfony.com/doc/current/reference/forms/types/number.html#precision

Answer 2

that's what I did ;
<script type="text/javascript">
function execute_time_ext(clicked) {
if (document.forms && document.forms['show_convert']) {
var from = document.forms['show_convert'].unit_from.value;
var elms = document.getElementsByName('unit');
var amount = document.forms['show_convert']['value'].value;
var to;
var amount_int = ['show_convert']['value'] - 0;
for (var i=0; i<elms.length; i++) {
to = elms[i].value;
convert(show_convert['value'], from, to, false, false);
}
var cookie = 'default_decimals';
if (getCookie(cookie) != decimals) {
setCookie(cookie, decimals, null, '/');
}
} else {
if (clicked) {
alert('Converter error. Conversion not supported by browser.');
}
}
}
execute_time_ext(false);
</script>
widget :
<div onkeyup="execute_time_ext(true)" onchange="execute_time_ext(true)"> {{ form_widget(form['value']) }} {% endblock %}
<div> <input id="value_4" type="hidden" value="365.25|0|4" name="unit"></div>
</div>