I'm using the delayed_job_active_record gem on a Rails app. I've been following the documentation about implementing background tasks, but encountered the following error:
NoMethodError in Home#index
Showing /home/action/workspace/postagain/app/views/home/index.html where line #2 raised:
undefined method `delayed_backend_active_record_job_path' for #<#<Class:0x00000004d9f928>:0x00000004d9e960>
I'm not sure exactly what's wrong.
Here's the index.html view code located in the home folder. The link triggers the background task:
<%= link_to "Scan Buffer posts", buffer_scan %>
This is the Home controller code:
class HomeController < ApplicationController
before_action :authenticate_user!
helper_method :buffer_post
helper_method :buffer_scan
def index
end
def buffer_post(profile_ids, text)
client = Buff::Client.new(Figaro.env.buffer_access_token)
client.create_update(options = {body: {profile_ids: profile_ids, text: text}})
end
def buffer_scan
Delayed::Job.enqueue BufferPostsUpdate.new("test")
end
end
This is the custom job located in the apps/jobs folder:
BufferPostsUpdate = Struct.new(:test) do
def perform
puts "test"
end
end
Can't figure out what's wrong. Googling didn't turn out anything useful. Not sure if this helps, but I'm using Nitrous, an IDE based in the cloud, to run the development server. Any help is appreciated!
Here's the full stack trace:
actionpack (4.0.0) lib/action_dispatch/routing/polymorphic_routes.rb:129:in `polymorphic_url'
actionpack (4.0.0) lib/action_dispatch/routing/polymorphic_routes.rb:135:in `polymorphic_path'
actionpack (4.0.0) lib/action_view/routing_url_for.rb:87:in `url_for'
turbolinks (2.2.1) lib/turbolinks/xhr_url_for.rb:12:in `url_for_with_xhr_referer'
actionpack (4.0.0) lib/action_view/helpers/url_helper.rb:180:in `link_to'
app/views/home/index.html:2:in `_app_views_home_index_html___3533284595993493556_40793080'
actionpack (4.0.0) lib/action_view/template.rb:143:in `block in render'
activesupport (4.0.0) lib/active_support/notifications.rb:161:in `instrument'
actionpack (4.0.0) lib/action_view/template.rb:141:in `render'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:49:in `block (2 levels) in render_template'
actionpack (4.0.0) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.0) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:48:in `block in render_template'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:56:in `render_with_layout'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:47:in `render_template'
actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:17:in `render'
actionpack (4.0.0) lib/action_view/renderer/renderer.rb:42:in `render_template'
actionpack (4.0.0) lib/action_view/renderer/renderer.rb:23:in `render'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:127:in `_render_template'
actionpack (4.0.0) lib/action_controller/metal/streaming.rb:219:in `_render_template'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:120:in `render_to_body'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:33:in `render_to_body'
actionpack (4.0.0) lib/action_controller/metal/renderers.rb:26:in `render_to_body'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:97:in `render'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:16:in `render'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
/home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/benchmark.rb:296:in `realtime'
activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `ms'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
remotipart (1.2.1) lib/remotipart/render_overrides.rb:14:in `render_with_remotipart'
actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:5:in `send_action'
actionpack (4.0.0) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.0.0) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (4.0.0) lib/active_support/callbacks.rb:413:in `_run__4369149141656021554__process_action__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.0.0) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.0) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.0) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in `call'
rack-pjax (0.7.0) lib/rack/pjax.rb:12:in `call'
omniauth (1.2.1) lib/omniauth/strategy.rb:186:in `call!'
omniauth (1.2.1) lib/omniauth/strategy.rb:164:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
remotipart (1.2.1) lib/remotipart/middleware.rb:27:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/flash.rb:241:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.0) lib/active_record/migration.rb:369:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.0) lib/active_support/callbacks.rb:373:in `_run__2120319930356218698__call__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.0) lib/rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0) lib/rails/rack/logger.rb:21:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0) lib/rails/engine.rb:511:in `call'
railties (4.0.0) lib/rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:138:in `service'
/home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:94:in `run'
/home/action/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/server.rb:295:in `block in start_thread'
The link_to call needs to point to a route/controller action as the second argument, and that controller action is where you need to enqueue the background task. You can't link directly to the background task.
You should remove the helper_method :buffer_scan line and change the buffer_scan method to look more like a controller action:
def buffer_scan
Delayed::Job.enqueue BufferPostsUpdate.new("test")
redirect_to root_path
end
Make sure you add a route for the buffer_scan action, then your link_to should look like:
<%= link_to "Scan Buffer posts", buffer_scan_path %>
Now when you click the link, you'll hit the buffer_scan action, which will enqueue the update, then redirect the user back to your homepage.