✅
PWA Bundle
1.1.x
1.1.x
  • PHPWA Bundle
  • How To Create A PWA?
  • How To Install/Remove A PWA?
  • Bundle Installation
  • Deployment
  • The Manifest
    • Application Information
      • Scope
      • ID
      • Direction and Language
      • Orientation
      • Description
      • IARC Rating ID
      • Categories
    • Icons
    • Screenshots
    • Shortcuts
    • Protocol Handlers
    • File Handlers
    • Share Target
    • Complete Example
  • The Service Worker
    • Configuration
    • Content Security Policy
    • Custom Service Worker Rule
    • Workbox
      • Site Manifest Cache
      • Asset Caching
      • Resource Caching
      • Image Caching
      • Font Caching
      • Offline Fallbacks
      • BackgoundSync
      • CDN and Versions
      • Cache Cleaning
      • Custom Cache Strategy
    • Push Notifications
    • Complete Example
  • Symfony UX
    • Connection Status
    • Prefetch on demand
    • Sync Broadcast
    • BackgroundSync Form
  • Image Management
    • Icons
    • Screenshots
  • Experimental Features
    • Non-Standard Parameters
      • Launch Handler
      • Display Override
      • Related Applications
      • EDGE Side Panel
    • Translations
    • Widgets (Win10+)
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  1. The Service Worker

Content Security Policy

PreviousConfigurationNextCustom Service Worker Rule

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If your application uses Content Security Policy (CSP) to declare and restrict script execution, the Service Worker will not be loaded as expected.

Fortunately, you are able to pass attributes such as a nonce to the script directive.

In the example below, the nonce attribute is managed by .

<!DOCTYPE html>
<html lang="en">
<head>
  {{ pwa(swAttributes= {nonce: csp_nonce('script')}) }}
</head>
<body>
  ...
</body>
</html>
nelmio/security-bundle