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Versions: 8
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Contents
# frozen_string_literal: true
module Decidim
# 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 sohwn
# or cached.
#
# This custom route ensures that the favicons are always correctly served for
# the domain.
class FaviconController < ::DecidimController
include ActionController::DataStreaming # For Rails 7, check out `ActiveStorage::Streaming`.
include NeedsOrganization
skip_before_action :verify_authenticity_token, :verify_organization
skip_after_action :verify_same_origin_request
after_action :skip_headers
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
private
def skip_headers
# Disable the session cookie header for the favicon request
request.session_options[:skip] = true
# Disable the default headers
Rails.application.config.action_dispatch.default_headers.keys.each do |header|
response.headers.delete(header)
end
end
def render_blank_favicon
response.stream.write("")
end
def favicon_blob
return unless current_organization
@favicon_blob ||= current_organization.favicon_ico&.blob
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems