Rails 5.0.0.beta3 thinks it is in production mode when it isn't.

rubyonrails-talk
1

Hi All!

Another problem.  I am using Rails 5.0.0.beta3 with a minor

javascript file (115 lines). I have encountered the following problem several times in the past two days. In both earlier cases, I ended up returning to the master branch and starting over (there were very few changes in those two branches, I hadn’t gotten very far). Now I have it very close to being finished and I can’t seem to get it to work like it was a few minutes ago. Unfortunately, I have not committed my changes frequently enough (dumb, I know) so I will have to start over again. (I can copy the edited files out of the git tree, create a new branch and copy them back, but I would like to get to the bottom of this weirdness before I do),

I am working in **development** mode.  I can edit and test the

.js.erb file in assets with no problems for hours on end. Most of the time I don’t even have to restart the server (usually when I edit routes.rb).

Suddenly, it gives me an error message about needing to **pre-compile**
the js file in **production** mode by editing a config file and

restarting. Without changing the config (as it recommends) when I restart the app it no longer loads the javascript file, and none of the routines in it execute anymore. It also ignores any edits that I make to that file. In one of the earlier cases I did edit the config file as it requested, but that did nothing to solve the problem.

I don't have any idea what I might have changed to cause this.  I

looked at the git status and I have only changed/created four files:

1) The layout file that originally had the js code (was moved to the

newly created js.erb file)

2) The controller file

3) The routes.rb file, and

4) The newly created js.erb file.

The last edit was to correct a typo in the js.erb file.

The program works (loads the js from the layout file and does

everything that is already coded) when I switch back to the master branch, but as soon as I go to the working branch, the problem comes back.

The rails log seems to show it loading pre-compiled scripts after it

breaks, while before it seems to be getting files from the assets directory. (Not sure about this).

I tried both Firefox and Chrome and both show the same behavior (not

surprising).

I double checked that RAILS_ENV=development and it is.  This has

been setup for years and only changes when I explicitly set it to production (rarely). It returns to development whenever I login.

Where should I start looking for this problem?

Thanks,

Don
2

Hi All!

Another problem. I am using Rails 5.0.0.beta3 with a minor javascript file (115 lines). I have encountered the following problem several times in the past two days. In both earlier cases, I ended up returning to the master branch and starting over (there were very few changes in those two branches, I hadn't gotten very far). Now I have it very close to being finished and I can't seem to get it to work like it was a few minutes ago. Unfortunately, I have not committed my changes frequently enough (dumb, I know) so I will have to start over again. (I can copy the edited files out of the git tree, create a new branch and copy them back, but I would like to get to the bottom of this weirdness before I do),

I am working in development mode. I can edit and test the .js.erb file in assets with no problems for hours on end. Most of the time I don't even have to restart the server (usually when I edit routes.rb).

Suddenly, it gives me an error message about needing to pre-compile the js file in production mode by editing a config file and restarting.

Can you copy/paste the full error message please. I have seen errors like this where the message is a bit confusing.

Also it would be worth comparing the logs before and after it fails to see what the difference is.

Colin

3

I believe a similar thing is happen with my install of Rails 5. It appears to me that the development environment is attempting to serve assets via the pipeline. For my experiment I use an image_tag to pull down an image. In the first load case the PNG requested is not present in app/assets/images. For the second request I have copied the PNG into place. Below is the console trace:

dave@dave-MacBook:$ rails -v

Rails 5.0.0.beta2

dave@dave-MacBook:$ rails s

=> Booting Puma

=> Rails 5.0.0.beta2 application starting in development on http://localhost:3000

=> Run rails server -h for more startup options

=> Ctrl-C to shutdown server

Puma 2.16.0 starting…

  • Min threads: 0, max threads: 16
  • Environment: development
  • Listening on tcp://localhost:3000

Started GET “/sign_in” for 127.0.0.1 at 2016-03-08 14:58:50 -0800

Processing by UserController#sign_in as HTML

Rendered user/sign_in_up.html.haml within layouts/application (786.7ms)

Rendered shared/_header.html.haml (97.8ms)

Completed 200 OK in 938ms (Views: 910.9ms | ActiveRecord: 0.0ms)

Started GET “/assets/bootstrap/bootstrap-theme.self-3598a44d4c6ec016d76dc796536975c136b9cbff9e9f22216088b542fa658481.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/bootstrap/bootstrap.self-598365399e6ae8f5a456a189663bac8ef9b8996ace38626328403f280fd63400.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/vendor_manifest.self-e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/font-awesome.self-c1a7a80b6536c3397a1a212c9bd22298ae69260ee343d00b60d7f41fa54a59a8.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/search.self-f4ce997ae0874a91dccf3e609f24a0a61e4e51021836329d7e0a519173ce233b.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/shared/main.self-36922b9ab4cde4dd04c7393ca03177e067982525ad494bd05c8a7478c47632b7.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/shared/lesshat.self-e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/user.self-8c01dbddb022ddbff9bb74f8baf99e5139bdaee2997404853c6a9d106444bbe5.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/application.self-0e31f1d30f689436ae56e463f6474eb99704af8bbed5fc320a66ac33afb59c2b.css?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/jquery.self-c64a74367bda6ef8b860f19e74df08927ca99d2be2ac934e9e92d5fd361e0da4.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/turbolinks.self-c37727e9bd6b2735da5c311aa83fead54ed0be6cc8bd9a65309e9c5abe2cbfff.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/action_cable.self-5cc84f1a95a47f68c4e64db6ffd98e141a568a28f49b78fa82712f809692630f.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/jquery_ujs.self-d602bdfe68ffc63b9f9cc512872aa3cfff046228a0a36e90dd476e8ef54c1b09.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/cable.self-e475a14c2de96c3e8b6ec198f31d9dce665cb56a1de35233ff6b6e4aed8af083.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/search.self-a8e5021a341c867ddd784bff1c4fbf355ce26dcc93e7c17da4db0d93a686689f.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/channels/search_results.self-62b81ec1b2eb773ca7e98df9f8bc81b48f8c4a9790c5519269f3685d8519b70a.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/user.self-877aef30ae1b040ab8a3aba4e3e309a11d7f2612f44dde450b5c157aa5f95c05.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/bootstrap/bootstrap.self-d0e973a52d36a01036265aeefaf2d1ae3499d2cb231a9be3bd846432daf231de.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/vendor_manifest.self-e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/application.self-afe802b04eaf1de2ea762489c83c08aa4c4ff3ff13c21566e43cb710683f5abc.js?body=1” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/logo-128x128-1a26fea2556eb3e28a2e964cfb9c354196bdfc6255f8d275a457c4da2bda3f9a.png” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/images/facebook-32x32.png” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/twitter-32x32-4544d620700b86d9096fd28c0cf9696d398938cd1d897d59982a73096ee47657.png” for 127.0.0.1 at 2016-03-08 14:58:51 -0800

Started GET “/assets/google-32x32-27128aa0a975258793fbd777417ee89b7dd14f99ec4ca974f6254ed284af8618.png” for 127.0.0.1 at 2016-03-08 14:58:52 -0800

ActionController::RoutingError (No route matches [GET] “/images/facebook-32x32.png”):

actionpack (5.0.0.beta2) lib/action_dispatch/middleware/debug_exceptions.rb:53:in `call’

web-console (3.1.1) lib/web_console/middleware.rb:131:in `call_app’

web-console (3.1.1) lib/web_console/middleware.rb:28:in `block in call’

web-console (3.1.1) lib/web_console/middleware.rb:18:in `catch’

web-console (3.1.1) lib/web_console/middleware.rb:18:in `call’

actionpack (5.0.0.beta2) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call’

railties (5.0.0.beta2) lib/rails/rack/logger.rb:36:in `call_app’

railties (5.0.0.beta2) lib/rails/rack/logger.rb:24:in `block in call’

activesupport (5.0.0.beta2) lib/active_support/tagged_logging.rb:70:in `block in tagged’

activesupport (5.0.0.beta2) lib/active_support/tagged_logging.rb:26:in `tagged’

activesupport (5.0.0.beta2) lib/active_support/tagged_logging.rb:70:in `tagged’

railties (5.0.0.beta2) lib/rails/rack/logger.rb:24:in `call’

actionpack (5.0.0.beta2) lib/action_dispatch/middleware/request_id.rb:24:in `call’

rack (2.0.0.alpha) lib/rack/method_override.rb:22:in `call’

rack (2.0.0.alpha) lib/rack/runtime.rb:22:in `call’

activesupport (5.0.0.beta2) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call’

actionpack (5.0.0.beta2) lib/action_dispatch/middleware/load_interlock.rb:13:in `call’

actionpack (5.0.0.beta2) lib/action_dispatch/middleware/static.rb:136:in `call’

rack (2.0.0.alpha) lib/rack/sendfile.rb:111:in `call’

railties (5.0.0.beta2) lib/rails/engine.rb:522:in `call’

puma (2.16.0) lib/puma/server.rb:557:in `handle_request’

puma (2.16.0) lib/puma/server.rb:404:in `process_client’

puma (2.16.0) lib/puma/server.rb:270:in `block in run’

puma (2.16.0) lib/puma/thread_pool.rb:106:in `call’

puma (2.16.0) lib/puma/thread_pool.rb:106:in `block in spawn_thread’

Started GET “/sign_in” for 127.0.0.1 at 2016-03-08 15:02:11 -0800

Processing by UserController#sign_in as HTML

Rendered user/sign_in_up.html.haml within layouts/application (80.1ms)

Completed 500 Internal Server Error in 85ms (ActiveRecord: 0.0ms)

ActionView::Template::Error (Asset was not declared to be precompiled in production.

Add Rails.application.config.assets.precompile += %w( facebook-32x32.png ) to config/initializers/assets.rb and restart your server):

11: 			.row

12: 				.col-sm-4.col-sm-offset-4.col-xs-12

13: 					= link_to(provider[:link],:class => 'btn-grey btn-block oauth-link') do

14: 						= image_tag(provider[:image],:class => 'oauth-image')

15: 						.text-center

16: 							= provider[:label]

17:

app/views/user/sign_in_up.html.haml:14:in `block (2 levels) in _app_views_user_sign_in_up_html_haml__345370075_101410280’

app/views/user/sign_in_up.html.haml:13:in `block in _app_views_user_sign_in_up_html_haml__345370075_101410280’

app/views/user/sign_in_up.html.haml:10:in `each’

app/views/user/sign_in_up.html.haml:10:in `_app_views_user_sign_in_up_html_haml__345370075_101410280’

app/controllers/user_controller.rb:13:in `sign_in’

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/actionpack-5.0.0.beta2/lib/action_dispatch/middleware/templates/rescues/_source.html.erb (19.1ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/actionpack-5.0.0.beta2/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (6.5ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/actionpack-5.0.0.beta2/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.5ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/actionpack-5.0.0.beta2/lib/action_dispatch/middleware/templates/rescues/template_error.html.erb within rescues/layout (62.9ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/_markup.html.erb (0.6ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.4ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.5ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.5ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/console.js.erb within layouts/javascript (34.4ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/main.js.erb within layouts/javascript (0.7ms)

Rendered /home/dave/.rvm/gems/ruby-2.2.3@community/gems/web-console-3.1.1/lib/web_console/templates/index.html.erb (61.6ms)

When rails starts is correctly calls out that it is running in development mode. However, the way it is pulling down assets on the first request looks very much like the asset pipeline is being used. And clearly, with the second request, when the PNG is correctly placed, suggests that the asset pipeline is in use.

I haven’t done anything with respect to the asset configuration. Everything is just as ‘rails new’ generated. I have noticed there is now an app/assets/config/manifest.js file that appears to be similar in nature to app/assets/javascripts/application.js but I don’t know how to use this file.

Dave

4

Hi Colin,

This seems to be a combination of problems.

I did a git diff between the master branch (which worked correctly - up to the place where I was coding) and the working branch (which was NOT working :wink: ). There was nothing unusual, only 4 files changed and nothing that would cause Rails to think it was in production mode. I somehow lost the part of the log that had that strange error message, and it hasn't re-appeared (yet. I sure hope never).

The part of the problem where it ignored my edits seems to be two-fold. Part of it went away when I cleared cache in my browsers, The second seems to be that Rails is now ignoring changes in .js and .js.erb files. It's very hard to explain, because it was processing them yesterday till I got that weird error message.

I finally did what I threatened to do yesterday. I copied the modified files outside the git tree and created another branch (4 for this part of the project so far). I copied the problem files one-by-one into the new branch, starting with routes.rb (nothing would work if the routes were missing). Tested and it worked. I copied the controller, tested it, and it passed. I copied the calendars.js.erb and tested it. It failed (many alerts in the file, none activated), only the alert I put in in calendars.coffee showed up. Deleted calendars.coffee and restarted. No change!!!! The alert in calendars.coffee still appeared (the file was GONE). None from the javascript file.

At this point I discovered that coffeescript is not a superset of javascript. I copied the javascript line-for-line into a new coffeescript file and Rails barfed. I have never used coffeescript, but from the looks of things, I needed to learn fast.

After a few hours of editing, reading the manuals, testing and more editing, I got the javascript translated into coffeescript. Incidentally, in the process I totally hosed the javascript file, but Rails didn't seem to mind. It just ignored anything I did to that file. I'm not proficient in coffeescript, but...

In the long run, I got the thing working. There has not been an instance of the "You need to pre-compile the javascript file".

If anything like before happens, I'll copy the appropriate log entries and send them to you.

My new mantra is "commit early, commit often". :smiley:

Thanks,

Don

5

... At this point I discovered that coffeescript is not a superset of javascript. I copied the javascript line-for-line into a new coffeescript file and Rails barfed. I have never used coffeescript, but from the looks of things, I needed to learn fast.

Just for reference, I believe that you can use straight js in rails 5. If you use the extension .js then it will interpret them as js. I can't guarantee this as I have not done it, but I am fairly confident it is correct.

Colin

6

I think the first log you provided is exactly what one would expect in development mode. It is requesting each of the assets separately. If it were in production mode all the js would have been precompiled into one file, for example.

The second log does seem odd however. Have you tried restarting the server? I suspect the error might go away. Perhaps it is confused by not finding it the first time, or something along those lines. Still a bug though, but I have been unable to replicate it.

Colin

7

Colin, thanks for pointing out the fact that each asset, JS and CSS in particular, are being fetched individually, that wouldn’t happen with the production asset pipeline running. Strange still about the way images are being handled. By restarting the server, with the asset already placed things work as expected. I just don’t ever recall having to start and stop the server to add images before.

Colin, are you running beta3? I have a simple test project against beta1 that I will circle back to and see if this same behaviour is present.

Thanks,

Dave

8

Colin, thanks for pointing out the fact that each asset, JS and CSS in particular, are being fetched individually, that wouldn't happen with the production asset pipeline running. Strange still about the way images are being handled. By restarting the server, with the asset already placed things work as expected. I just don't ever recall having to start and stop the server to add images before.

You should not have to. As I said if that is happening it is a bug. It may already have been fixed, I don't see an open issue for it.

Colin, are you running beta3? I have a simple test project against beta1 that I will circle back to and see if this same behaviour is present.

Yes, I am using beta3. First I suggest searching the rails 5 issues to see if it has already been fixed. If it is not there then if you can get a repeatable failure then try it using the edge version of rails to see if has been fixed already. If it has not been fixed then report an issue.

Colin