I am using 'rake 0.8.7' in my Rails project and yet when I still try either rake routes or bundle exec rake routes I still get
rake aborted!
uninitialized constant Rake::DSL
If I try putting the recommended require 'rake/dsl_definition' in my Rakefile it gives me
rake aborted!
no such file to load -- rake/dsl_definition
So, I'm stuck at how to fix this. I can't run any rake commands...
That error sounds like you are using something in your app that requires a more recent version of rake than 0.8.7. Believe Rake::DSL only showed up in rake 0.9.0.
The most recent version of Rails advertises itself as working with rake as old as 0.8.7. Perhaps it's wrong. More likely you're using some other gem in your project which requires a more recent rake.
Why and how are you using rake 0.8.7 in your project instead of a more recent one? Unless you've locked to rake 0.8.7 in your gemfile (or are using some other gem that insists on 0.8.7), you should be able to run bundle update rake to upgrade to the most recent version of rake.
If you have multiple versions of rake installed, you may have to run bundle exec rake ..., as you noted. But in your project, bundle exec rake still gets you 0.8.7, because for whatever reason that's the version of rake your Gemfile.lock is currently set to -- but your project is using something that wants a more recent version.
Related
I had create a empty new rails project with a scaffold successfully but when I try rake db:create, it throws me an error: rake aborted! uninitialized constant Rake::DSL.
As other SO post mentioned, I tried setting my Gemfile to gem 'rake', '0.8.7', but rake gives me another error:
You have requested: rake = 0.8.7
The bundle currently has rake locked at 0.9.2.2. Try running bundle
update rake Run bundle install to install missing gems.
Then I did as the message said and update rake and bundle install. Same error.
It is nice and easy experience to develop a project a rails but it is a nightmare porting between ruby versions, rails versions, difference gem and plugin versions..
Try to delete your Gemfile.lock, and type this on your terminal:
bundle install
I had create a empty new rails project with a scaffold successfully but when I try rake db:create, it throws me an error: rake aborted! uninitialized constant Rake::DSL.
for this problem I'd suggest running all rake tasks via bundle exec rake ...
I'm running Ruby 1.9.2 and Rails 3.1 locally and I'm trying to fire up my app. Whenever I use rake (rake spec, rake cucumber, rake db:create) I get these warnings. What did I do wrong?
/Users/me/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/file_utils.rb:10: warning: already initialized constant RUBY
/Users/me/.rvm/gems/ruby-1.9.2-p290/gems/rake-0.9.2/lib/rake/file_utils.rb:84: warning: already initialized constant LN_SUPPORTED
Thanks for any pointers in the right direction!
This is caused when you are using Ruby 1.9.2 (that already comes with rake bundled) and you installed the rake gem, for example using bundler.
You can
uninstall the rake gem
$ gem uninstall rake
If you use bundler, keep using bundler. In this case, the right syntax is
$ bundle exec rake spec
not
$ rake spec
The warnings may fade if you prefix your calls to rake with bundle exec, i.e.
bundle exec rake spec
bundle exec rake cucumber
ian.
It seems to me that you've 1 unnecessary require 'rake' in your code
When trying to rake db:migrate on Heroku. I'm getting the following error.
rake aborted!
uninitialized constant Rake::DSL
From what I've gathered this seems to be a bug with Rake 0.9.2. If I do "gem list" locally only Rake (0.8.7) appears to be installed.
I've tried adding "gem 'rake', '0.8.7'" to my gem file and running bundle install but then I get the following error.
You have requested:
rake = 0.8.7
The bundle currently has rake locked at 0.9.2.
Try running `bundle update rake`
If I do run bundle update rake, it reverts back to 0.9.2, and I'm back where I started.
Am I missing something obvious here?
You should run commands with bundle exec to ensure your getting the proper dependencies. So run:
bundle exec rake db:migrate
For a more detailed post see Yehuda Katz blog post http://yehudakatz.com/2011/05/30/gem-versioning-and-bundler-doing-it-right/
If you still continue to have problems there appears to be several other people with the same issue How to fix the uninitialized constant Rake::DSL problem on Heroku? which they resolved by adding the following to their Rakefile:
require 'rake/dsl_definition'
require 'rake'
I got this error when doing "heroku rake db:migrate".
In /app:
rake aborted!
uninitialized constant Rake::DSL
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2482:in `const_missing'
....
...
....
..
etc...
I fixed it by adding
require 'rake/dsl_definition'
in RakeFile and then typed in
bundle update rake
git add .
git commit -m "Change RakeFile"
git push heroku
heroku rake db:migrate
This one solved my problem. I didn't add gem 'rake', '0.8.7' in my gem file
and my gem list shows rake (0.9.2, 0.8.7).
I have a blog post about this, You have already activated Rake 0.9.2. There are two ways to do this:
Only use the older version of Rake:
Check out your current Rake versions with $ gem list. See which versions of Rake you have and remove them all except for0.8.7. You can remove the gems with gem uninstall rake -v=0.9.1 or whatever version you need to remove.
Or just add a one liner to your Rake file:
Unless you have to use the older version of Rake it is easier to add this linerequire 'rake/dsl_definition' to your Rails's app Rakefile.
require File.expand_path('../config/application', __FILE__)
require 'rake/dsl_definition'
require 'rake'
I used this to solve this very problem earlier without deleting any gems. This method will force your app to use Rake 0.8.7 which is more stable than 0.9+. You must run bundle update rake command after specifying the version of Rake to use so your gemfile.lock file is in sync with your gem file (if you skip this step Heroku will not let you push your code!)
In your gem file specify the version of Rake to use:
"rake", "0.8.7"
Then do:
bundle update rake
If this still isn't working for you, then do:
sudo gem uninstall rake
As with rich's answer (solving this problem without deleting any gems), but with a correction to your step 1., and a few additional steps:
In the gem file specify:
gem 'rake', '0.8.7'
bundle install (Bundler documentation say to always 'bundle install' after changing your gem file)
git commit -am "Fixed heroku rake problem by specifying rake 0.8.7 in Gemfile"
git push heroku
heroku rake db:migrate
I got the same error without steps 3 and 4.
I have been trying to run rake but it seems that ever since I updated ruby gems rake is failing.
This morning I ran:
gem update --system
And ever since, rake has been failing with the following error:
$ rake db:migrate
rake aborted!
undefined method `specifications' for "/usr/lib/ruby/gems/1.9.1":String
/home/cknadler/projects/ecommerce/Rakefile:7:in `<top (required)>'
(See full trace by running task with --trace)
I have been reading about this problem and it seems that there is a problem with rake 0.9.x that breaks rails but when I check my rake version, I am running 0.8.7:
$ rake --version
rake, version 0.8.7
I have tried uninstalling rake and reinstalling it, using bundler, etc and at this point I am pretty stuck. Thanks in advance.
Edit:
My Rakefile (located in my app root directory)
# Add your own tasks in files placed in lib/tasks ending in .rake,
# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
require File.expand_path('../config/application', __FILE__)
require 'rake'
Ecommerce::Application.load_tasks
I would suggest using the bundled binary version of rake to avoid this issue.
bundle exec rake db:migrate
If you installed your bundle using binstubs (bundle install --binstubs) then you can also use the bin version of rake which is equivalent to the bundle exec rake command:
bin/rake db:migrate
P.S: I would also recommend using RVM instead of installing Ruby using sudo for all users. This allows you to keep more modular ruby and gem installation.
You should remove rake 0.9.x (you may have 0.9.2 installed) by doing
gem uninstall rake -v=0.9.2
And then run bundle update
bundle update
Hope that helps.
I have Rake version 0.9.1 but I need to use 0.8.7 for a project, and I'm fairly certain I have both version installed but it always uses 0.9.1 by default. Is there a way to specify which version of Rake to use?
I'm trying to run this: rake db:drop db:create db:migrate db:seed
and I get this error:
You have already activated rake 0.9.1, but your Gemfile requires rake 0.8.7. Consider using bundle exec.
gem search (or list) rake, should tell you which versions are installed.
You can invoke rake with a specific version number bracketed with
underscores.
$rake _0.7.3_
This is a standard feature of gem packaged binaries.
You can specify the version of Rake to use, in your Gemfile:
gem 'rake', '0.8.7'
Though the "error" message you are getting says it all... you need to run:
bundle exec rake ...
... in order to use the right rake to run your rake tasks.
More info on bundle exec: http://gembundler.com/man/bundle-exec.1.html
Try executing gem uninstall rake then just pick the version you want to uninstall.
It happens because you are using rake from the system. (latest version by default)
The solution is use follow command:
bundle exec rake db:migrate
Also, you can create alias. Because this command is too big and difficult to write.
echo "alias be='bundle exec'" >> ~/.bash_profile
source ~/.bash_profile
Then you can use follow short command:
be rake db:migrate