Contao Summit 2026 in Leipzig 15th and 16th October

csp_hash - Twig Function

Info
This feature is available in Contao 5.3 and later.

This allows you to add CSP hashes for inline styles and scripts.

{# Generate the hash for some inline JavaScript #}
{% set script %}
    alert('foo');
{% endset %}
<script>{{ script }}</script>
{% do csp_hash('script-src', script) %}

{# Generate the hash for some inline styles #}
{% set style %}
    body {
        background-color: magenta;
    }
{% endset %}
<style>{{ style }}</style>
{% do csp_hash('style-src', style) %}

Arguments

  • directive: The CSP directive the hash will be generated for.
  • source: The content for whith the hash will be generated for.
  • algorithm: You can optionally define the hashing algorithm (default is sha256).