Class: Decidim::FaviconController

Inherits:
DecidimController
  • Object
show all
Includes:
ActionController::DataStreaming, NeedsOrganization
Defined in:
app/controllers/decidim/favicon_controller.rb

Overview

We serve a custom /favicon.ico route for Decidim in order to show the correct favicons also when browsing e.g. PDF documents originating from the same domain displayed inline in the browser. For those special files displayed in the browser, the favicon could be otherwise incorrectly shown or cached.

This custom route ensures that the favicons are always correctly served for the domain.

Instance Method Summary collapse

Methods included from NeedsOrganization

enhance_controller, extended, included

Instance Method Details

#show ⇒ Object 



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# File 'app/controllers/decidim/favicon_controller.rb', line 21

def show
  response.headers["Content-Type"] = "image/vnd.microsoft.icon"
  response.headers["Content-Disposition"] = %(inline; filename="favicon.ico")
  return render_blank_favicon unless favicon_blob
  return unless stale?(favicon_blob, public: true, last_modified: favicon_blob.created_at)

  expires_in 1.week, public: true

  # For Rails 7, check out `send_blob_stream`.
  favicon_blob.download do |chunk|
    response.stream.write(chunk)
  end
end