I'm deploying a railsapp to ubuntu
rmagick is installed via "bundle install vendor". it installs , and the app runs -- but this error gets thrown :
uninitialized constant Image::Magick
when trying to read:
source_image = Magick::Image.read("#{Rails.root}/public/system/assets/#{self.id}/original/#{self.asset_file_name}").first
I've done the following:
uninstsalled, then reinstalled, ImageMagick on the server
uninstalled, then reinstalled, rmagick on the server
uninstalled, then reinstalled, rmagick via bundler
run with only the bundler rmagick installed
run with the bundler and system rmagick installed
proxied nginx to rails-server to ensure the error is not related to passenger
I'm going a bit crazy trying to figure out what else I can do to make rmagick see imagemagick
After hours of fighting and recompiling imagemagick and rmagick under different combinations, I lucked out on a 1 line fix
Gemfile
- gem 'rmagick'
+ gem 'rmagick', :require => 'RMagick'
Bundler requires the gem name by default,
i.e. :require => 'rmagick'.
But the file being included is actually 'RMagick.rb'. For case-insensitive file systems, like OS X, this will work, but for case-sensitive file systems, like Ubuntu, the file will not be found.
This can be one of the reasons why the error can't be produced on the dev system, even when running in production mode.
Doing a gem install rmagick as a privileged user fixed the issue for me.
Not really a helpful solution, but I guess in my case I didn't actually have RMagick installed properly, even though bundler thought I did.
Related
I have a new Mac computer and installed rails on it, and then I tried out the command
gem outdated
for some reason, it showed one of the gems outdated:
webrick (1.4.2 < 1.6.0)
I wonder why it is outdated on the first installed, and when I did
sudo gem install webrick
it actually installed 1.6.0 onto the system. Doesn't it require gem update instead of install to update something? How come install also updated it?
Not exactly, gem install GEM_NAME will install the last version available if you don't specify a version when installing, and you can have more than 1 version of the same gem on your machine.
you can run gem environment, and check where gems are installed, go to that folder and you will see both version gems folder there.
so when you create a rails project for example and add a specific version of a gem in the gemfile and another version on another project, you can have both without problems
I want to install ruby on rails in offline mode (i.e. without internet connection). So I downloaded railsinstaller-3.2.0.exe from http://railsinstaller.org/en and installed it. By the end, I had ruby installed but in order to have rails installed I ran
gem install rails
and faced these errors: (meaning command needs internet connection)
ERROR: Loading command: install (ArgumentError)
unknown encoding name - CP720
ERROR: While executing gem ... (NoMethodError)
undefined method 'invoke_with_build_args' for nil:NilClass
I mean is there any solution like downloading gems with another computer connected to internet and then copying files in the proper location in the installed directory of gems.
Please help me if you have any idea.
As said in a comment, it's a gem (lib) dependency issue.
You might want to look into installing the bundler gem library to manage dependencies for you, with bundler you would just have to run, bundle install and it would download all the required gems for you including any gem dependencies.
You can install bundler simply, just run
gem install bundler
Then in your rails project directory, just run bundle install.
Often to run a project (like rails for example) you might have to start it with
bundle exec rails start
To install Gem's on a non-internet connect computer you might want to refer to this answer on just that problem.
This is the website where you can find all available ruby gems. Ruby
gems download. Find the one you are interested and download it.
Then move the gem in a directory of your choice and cd into that from
the command prompt. I am using C:/ruby193/bin/pony-1.4.gem
Let's say that the gem we are interested in is the pony gem (smtp
email).
Just type gem install pony-1.4.gem
and you should get it installed manually unless you have a restricted
acc with not adequate administrative privileges.
You can also refer to the official documentation on the matter.
Generally, if I need a gem, I put it in the Gemfile and bundle install. However, I don't understand if there is a benefit to downloading the gems locally first with gem install _____. Is there any benefit to this? Does bundle install no longer have to connect to the net in that situation?
Bundler installs the gems located in your Gemfile locally the same as if you ran gem install for each of those gems.
Gem install needed for gems that can be used outside of bundler applications. For example request-log-analyzer need to be installed outside of any apps for be available in command line.
I myself use gem install _______ then i use bundle install --local which doesn't require internet connection if the gem is found locally but will return an error if the gem was not found locally...
I find this method faster in downloading and installing gems, plus if the gems are found locally then i have also the benefit of altering the gemfile and install the gems without having internet connection.
Alright, I've been trying to install Rmagick on a Windows 7 x64 machine pretty much all day. I've checked out every single tutorial on Stack Overflow and other sites, but I keep getting an "Invalid Drive Specification" error no matter which tutorial I follow. My environment came from http://railsinstaller.org/. Has anyone successfully installed Rmagick recently that can point me in the right direction? Thanks, this is driving me crazy but I really have to get it working.
First and most important, when reporting issues or asking for help, always include version information about what you're trying to install, specially Ruby.
It seems you're installing using RailsInstaller, but since you didn't mention if is the 2.0 preview version or the stable one, I'll assume you used the stable one, which is based on Ruby 1.8.7-p334.
Now, RailsInstaller already includes the needed pieces: Ruby and RubyInstaller DevKit component, so going to skip the steps about installation of that and jump directly to RMagick itself.
To successfully install RMagick gem, you need ImageMagick binaries with development headers, as documented in RubyInstaller's Tutorial wiki page, which links here
Please download 32bits version of ImageMagick, as Ruby is 32bits.
For my test I've downloaded the installer version ImageMagick-6.7.0-8-Q16-windows-dll.exe
Once downloaded and installed in a path without spaces and I've selected the option Install development headers and libraries for C and C++.
Then open a new Command Prompt, ensure Ruby is available (checking with ruby -v) and after performed the following command:
gem install rmagick --platform=ruby -- --with-opt-lib=C:\ImageMagick-6.7.0-Q16\lib --with-opt-include=C:\ImageMagick-6.7.0-Q16\include
That command is going to take considerable amount of time (took 1 minute on my Core 2 Duo) but the end result was:
Fetching: rmagick-2.13.1.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
Successfully installed rmagick-2.13.1
1 gem installed
Now you can verify RMagick installed successfully using IRB:
irb(main):001:0> require "rubygems"
=> true
irb(main):002:0> require "rmagick"
=> true
irb(main):003:0> Magick::Version
=> "RMagick 2.13.1"
Now, if you're using Ruby 1.9.2, last RMagick release is not compatible with it and you will need to build from source. There is another tutorial on RubyInstaller wiki that covers that, but please read this thread at RubyInstaller group were we discuss the issues.
Hope all this helps.
This above post did not work for me, the key for me was using GitBash wich comes with RailsInstaller, and also includes Devkit.
Install railsinstaller -> www.railsinstaller.org (I installed it to c:\Rails)
Install ImageMagick -> ImageMagick-6.7.3-8-Q16-windows-dll.exe (I installed it to c:\ImageMagick)
Open GitBash
$ gem install rmagick --platform=ruby -- --with-opt-lib=c:/ImageMagick/lib --with-opt-include=c:/ImageMagick/include
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
Successfully installed rmagick-2.13.1
1 gem installed
Installing ri documentation for rmagick-2.13.1...
Installing RDoc documentation for rmagick-2.13.1...
Also, in the gemfile I have commented out gem 'rmagick' in the development group
This is what my gemfile looks like
group :development do #this is used on localhost
gem 'mysql2'
gem 'paperclip'
#gem 'rmagick' #dont need this
gem 'devise'
end
group :production do #this is used on heroku
gem "pg" #this is postgresql used on heroku
gem "aws-s3" #this is used for amason S3 filestorage
gem 'paperclip'
gem 'rmagick'
gem 'devise'
end
We just had this problem with Windows 7, Ruby 2.0 & Rails 4.0
This tutorial works really well:
Download the latest ImageMagick installer from ImageMagick.org (as of writing, "[ImageMagick-6.8.7-0-Q16-x86-dll.exe][3]" -- the complete installer (not the binaries))
Once downloaded, install ImageMagick without any white spaces in the file path (E.G C:/ImageMagick) with the following options checked:
Add Application Directory To Your System Path
Installer Development Headers For Libraries C & C++
In the Ruby CMD, install the RMagick Gem with the correct file paths:
gem install rmagick --platform=ruby -- --with-opt-lib=**c:/ImageMagick-6.7.0-Q16/lib** --with-opt-include=**c:/ImageMagick-6.7.0-Q16/include**
This should work for you
I did install it about a month ago. One of many errors I had to overcome was the "Invalid drive specification"
I've just started a blog with a post about installing RMagick on Win7 based on my self-answered question here.
One note though: I used ruby 1.9.2 and railsinstaller seem to use 1.8.7.
If I remember it right, this error could be caused by spaces in your image magick installation path.
I don't have enought privileges, sorry for posting my comment to Luis Lavena's answer here.
One solution that worked for me was running Luis Lavena's solution from "Command Prompt with Ruby and Rails" (from the Windows start menu). It loads all necessary configurations.
I'm very new to Rails (and Ruby), and am having trouble installing and using gems. I'm trying to use ruby-tmdb (https://github.com/aarongough/ruby-tmdb) and there's very little documentation.
"sudo gem install ruby-tmdb" runs just fine and I can see the gem installed when I run "gem list --local"
But, when I try and run the app, I get the error "no such file to load -- ruby-tmdb".
I'm on Mac OS X Snow Leopard. Ruby 1.8.7. Rails 3.0.3. Gem 1.3.7.
Is the gem listed in your Gemfile? In Rails 3, all gem dependencies should be listed in the Gemfile, so that it is properly loaded when the app runs.
You should have something like the following line:
gem 'ruby-tmdb'
Then, run bundle install to ensure that all gem dependencies are installed, and to have Bundler save the lock file that will ensure that all copies of this application run with the same gem versions. From this point on, you will no longer have to write the require line yourself; Rails will load in all necessary gems as the environment loads.
You might get the same error even after this, but it's always worth going through the standard process to help narrow things down :)
$ sudo which gem
$ which gem
$ sudo ruby -v
$ ruby -v
Sometimes users have different gems and rubys compared to root.
A common problem is that a gem installed for ruby 1.8 by root isn't visible for the users ruby 1.9
gems for ruby 1.8 and gems for 1.9 are NOT compatible.
This probably isn't the issue but is something that may be worth considering.