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I'm working on a site with a very complex permissions structure (based on groups, dates, dynamic overrides etc). I've written a custom permissions plugin to handle this in a centralized fashion.

In this plugin I've exposed some of the functionality through twig variables:

{{ craft.permissions.require('update','entry.projects', project.id) }}

This function is similar to the {% requireLogin %} where it performs redirects and stops craft processing etc if it fails the permissions check.

I need to somehow execute this as a twig tag so that I can place it outside the {% block content %} tags.

Is there a way to create custom twig tags?


Alternatively; as a work around I'm using the 'if' tag which is a bit messy:

{% if craft.permissions.require('update','entry.projects', project.id) %}{% endif %}

A different tag dedicated to running functions could be useful in the next release, eg:

{% exec craft.permissions.require('update','entry.projects', project.id) %}
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    You may also want to look at Twig's do tag... It basically just executes a statement without returning anything. – Lindsey D Dec 9 '14 at 21:50
  • awesome thanks mate – Jered Masters Dec 10 '14 at 8:03
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Is there a way to create custom twig tags?

Sure. You can look in craft/app/etc/templating/twigextensions/ to see how Craft creates it's own custom Twig tags, which is how a plugin would do it using the addTwigExtension hook.

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