Symfony2 Multiple Twig Extensions

Question

Is it possible to create multiple Twig extension ? Because when I add a second one, I get the error message that the first extension method is not existing in the second extension.

Here is how my extension are defined in services.xml :

<service id="acme.extension.view_helper" class="FLS\AcmeBundle\Extension\ViewHelperExtension">
        <argument type="service" id="doctrine.orm.entity_manager" />
        <tag name="twig.extension" />
 </service>

<service id="acme.extension.stats_helper" class="FLS\AcmeBundle\Extension\StatsExtension">
        <argument type="service" id="doctrine.orm.entity_manager" />
        <tag name="twig.extension" />
</service>

And here is the error message :

Fatal error: Call to undefined method FLS\AcmeBundle\Extension\StatsExtension::findTask() in F:\www\AcmeBundle\app\cache\dev\twig\fe\fd\4ff31bf8efd0669b6d0b2a14ba11.php on line 232

The findTask method is defined in ViewHelperExtension.

Thanks in advance!

can you share your ViewHelperExtension and StatsExtension code please — Luke
– Luke, Commented Jan 15, 2013 at 13:28
Same problem encountered here. The service definitions are Ok. Seems to be the case of a strange behavior: while defining two service extensions only the last defined one is available. This issue can be related to Twig — Dan Gurgui
– Dan Gurgui, Commented Feb 15, 2013 at 8:43
I have the same problem but only if the servises are in the same bundle — Fabien
– Fabien, Commented Mar 26, 2014 at 12:55

Alfro · Accepted Answer · 2017-02-09 18:50:15Z

1

Edit: TL;DR. Yes. It is possible

I just had this issue right now. In my case, the reason for this was that I started with the same boilerplate for both extensions and the getName() function inside each was returning the same name.

Once I changed the name that function returns on each extension both extensions were added. I assume something like the following would work:

In src/AppBundle/Twig/AppBundleFooExtension.php

/* ... */
public function getName()
{
    return 'appbundle_foo_extension';
}
/* ... */

In src/AppBundle/Twig/AppBundleBarExtension.php

/* ... */
public function getName()
{
    return 'appbundle_bar_extension';
}
/* ... */

answered Feb 9, 2017 at 18:50

Alfro

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Adamamont · Accepted Answer · 2013-01-15 05:27:20Z

0

I use several twig extension in my project and everything is ok. Your services.xml containes service tags? <services> // Services definition </services> Looks like second service override first.

Article How to write a custom Twig Extension

edited Jan 15, 2013 at 5:27

answered Jan 15, 2013 at 5:21

Adamamont

1013 bronze badges

1 Comment

Frank6 Over a year ago

Strangely, everything I had to do in the services.xml file is to move the order of my services definitions. For example, I inserted between the two definitions of my extensions another service definition for a FormHandler and the override problem disappeared...

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