mirror of
https://github.com/discourse/discourse.git
synced 2024-11-24 05:34:28 +08:00
55a1394342
Doing .pluck(:column).first is a very common pattern in Discourse and in most cases, a limit cause isn't being added. Instead of adding a limit clause to all these callsites, this commit adds two new methods to ActiveRecord::Relation: pluck_first, equivalent to limit(1).pluck(*columns).first and pluck_first! which, like other finder methods, raises an exception when no record is found
68 lines
1.7 KiB
Ruby
68 lines
1.7 KiB
Ruby
# frozen_string_literal: true
|
|
class ThemeJavascriptsController < ApplicationController
|
|
DISK_CACHE_PATH = "#{Rails.root}/tmp/javascript-cache"
|
|
|
|
skip_before_action(
|
|
:check_xhr,
|
|
:handle_theme,
|
|
:preload_json,
|
|
:redirect_to_login_if_required,
|
|
:verify_authenticity_token,
|
|
only: [:show]
|
|
)
|
|
|
|
before_action :is_asset_path, :no_cookies, only: [:show]
|
|
|
|
def show
|
|
raise Discourse::NotFound unless last_modified.present?
|
|
return render body: nil, status: 304 if not_modified?
|
|
|
|
# Security: safe due to route constraint
|
|
cache_file = "#{DISK_CACHE_PATH}/#{params[:digest]}.js"
|
|
|
|
unless File.exist?(cache_file)
|
|
content = query.pluck_first(:content)
|
|
raise Discourse::NotFound if content.nil?
|
|
|
|
FileUtils.mkdir_p(DISK_CACHE_PATH)
|
|
File.write(cache_file, content)
|
|
end
|
|
|
|
# this is only required for NGINX X-SendFile it seems
|
|
response.headers["Content-Length"] = File.size(cache_file).to_s
|
|
set_cache_control_headers
|
|
send_file(cache_file, disposition: :inline)
|
|
end
|
|
|
|
private
|
|
|
|
def query
|
|
@query ||= JavascriptCache.where(digest: params[:digest]).limit(1)
|
|
end
|
|
|
|
def last_modified
|
|
@last_modified ||= query.pluck_first(:updated_at)
|
|
end
|
|
|
|
def not_modified?
|
|
cache_time =
|
|
begin
|
|
Time.rfc2822(request.env["HTTP_IF_MODIFIED_SINCE"])
|
|
rescue ArgumentError
|
|
nil
|
|
end
|
|
|
|
cache_time && last_modified && last_modified <= cache_time
|
|
end
|
|
|
|
def set_cache_control_headers
|
|
if Rails.env.development?
|
|
response.headers['Last-Modified'] = Time.zone.now.httpdate
|
|
immutable_for(1.second)
|
|
else
|
|
response.headers['Last-Modified'] = last_modified.httpdate if last_modified
|
|
immutable_for(1.year)
|
|
end
|
|
end
|
|
end
|