require_tree argument must be a directory in a Rails 5 upgraded app
Solution 1
I finally figured it out. So because I am doing the upgrade, RailsDiff didn't tell me that I was missing something.
So the error message wasn't incorrect, however, what I forgot to do was to create an empty directory.
In my app/assets/javascripts/cable.js
, I had the following:
//= require_tree ./channels
However, I forgot to actually create that folder.
So to fix this, all I had to do was create an empty folder within app/assets/javascripts
called channels
. Also, because git ignores empty directories, within that newly created folder, I also had to create an empty file called .keep
.
So once I did the following, everything worked like a charm:
- Create folder:
app/assets/javascripts/channels
- Create empty file within that folder:
app/assets/javascripts/channels/.keep
Everything works perfectly now.
Solution 2
The problem occurs when using rails new appname --skip-keeps
flag - it still tries to require non-existing files and generally is a mistake on Rails team side.
This is just a different approach to the described problem, the main solution works perfectly;
- Open
app/assets/javascripts/cable.js
- Remove autogenerated
//= require_tree ./channels
, from line 6
Keep your codebase as small as possible, someone skipped the .keep
s for a reason.
Solution 3
Faced a similar, but not the same issue. During upgrade of Rails from 5.2.3 to 5.2.4.1
$ rails s
returned:
Expected to find a manifest file in `app/assets/config/manifest.js` (Sprockets::Railtie::ManifestNeededError)
But did not, please create this file and use it to link any assets that need to be rendered by your app:
Example:
//= link_tree ../images
//= link_directory ../javascripts .js
//= link_directory ../stylesheets .css
and restart your server
Ok, followed the instructions, created manifest.js
with the above content, then
$ rails s
returned:
Sprockets::ArgumentError at / link_tree argument must be a directory
Fix:
create empty .keep
file in a new images
folder (which was possibly deleted at some point in the past without any immediate consequences):
app/assets/images/.keep
marcamillion
Rails developer that loves finance, economics, business & tech.
Updated on June 13, 2022Comments
-
marcamillion almost 2 years
I just upgraded my app from
Rails 4.2.7
toRails 5.0.0.1
. I used RailsDiff to make sure I had everything covered and I believe I did. So far everything has worked well up until the loading of my app.Now I am seeing this error:
Sprockets::ArgumentError at / require_tree argument must be a directory
This is my
application.css
:/* * This is a manifest file that'll be compiled into application.css, which will include all the files * listed below. * * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets, * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path. * * You're free to add application-wide styles to this file and they'll appear at the bottom of the * compiled file so the styles you add here take precedence over styles defined in any other CSS/SCSS * files in this directory. Styles in this file should be added after the last require_* statement. * It is generally better to create a new file per style scope. * *= require_tree . *= require_self */
This is my
application.js
// This is a manifest file that'll be compiled into application.js, which will include all the files // listed below. // // Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts, // or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path. // // It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the // compiled file. JavaScript code in this file should be added after the last require_* statement. // // Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details // about supported directives. // //= require jquery //= require jquery_ujs //= require turbolinks //= require_tree .
This is what the server log looks like:
Started GET "/" for ::1 at 2016-09-02 09:08:19 -0500 ActiveRecord::SchemaMigration Load (1.5ms) SELECT "schema_migrations".* FROM "schema_migrations" User Load (1.7ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 2], ["LIMIT", 1]] Processing by ProfilesController#index as HTML Rendering profiles/index.html.erb within layouts/application Profile Load (1.6ms) SELECT "profiles".* FROM "profiles" Rendered profiles/index.html.erb within layouts/application (45.8ms) Completed 500 Internal Server Error in 367ms (ActiveRecord: 6.3ms) DEPRECATION WARNING: #original_exception is deprecated. Use #cause instead. (called from initialize at /.rvm/gems/ruby-2.3.1@myapp/gems/better_errors-2.1.1/lib/better_errors/raised_exception.rb:7) DEPRECATION WARNING: #original_exception is deprecated. Use #cause instead. (called from initialize at /.rvm/gems/ruby-2.3.1myapp/gems/better_errors-2.1.1/lib/better_errors/raised_exception.rb:8) Sprockets::ArgumentError - require_tree argument must be a directory: sprockets (3.7.0) lib/sprockets/directive_processor.rb:182:in `rescue in block in process_directives' sprockets (3.7.0) lib/sprockets/directive_processor.rb:179:in `block in process_directives' sprockets (3.7.0) lib/sprockets/directive_processor.rb:178:in `process_directives'
I am using no plugins of any kind. It is a fairly simple/vanilla app. The only styling is from the default
scaffold.scss
.What could be causing this?