how to pass variable from twig path to the same controller? - symfony

Question

In template i need to pass variable to controller when clicked link
{{ variable }}
click
.
How to do this?
/**
* #Route("/test", defaults={"variable" = 1}, name="test")
* #Method("GET")
* #Template()
*/
public function testAction($variable)
{
return array('variable'=>$variable);
}
You will say i need placeholder in #Route /test/{variable}, then how to first time visit url test?
edit: this is silly question. I had some cache problem while testing this issue. The answear is obvious.

Answer 1

You need to define your #Route annotation like you mention:
/**
* #Route("/test/{variable}", defaults={"variable" = 0}, name="test")
* #Method("GET")
* #Template()
*/
public function testAction($variable)
{
return array('variable'=>$variable);
}
Thanks to defaults option you can access your route with or without variable:
With:
click
This will generate url /test/2 and your $variable will equal 2
Without:
click
This will generate url /test and your $variable will equal 0 (a value set in defaults option)

Answer 2

I had to do something similar, and #Tomasz, your answer helped me a lot. I my case I needed two variables.
Using the above example as a reference:
* #Route("/test/{variable}/{var2}",
* defaults={"variable" = 0, "var2" = 0},
* name="test")
* #Method("GET")
* #Template()
*/
public function testAction($variable, $var2)
{
return array('variable'=>$variable, 'var2 => $var2);
}
Then in twig you can use:
click
which generates URL /test/2/3
In my case, I was using something more fancy, like an Entity:
<td><a href="{{ path('submitPetHasProgram',
{'prog':stu.getTcProgram.getProgramId,
'student':stu.getStuId}) }}">Select</a></td>
Hopefully this will help someone out in the future who is struggling for a solution to this type of problem.