I am a .NET developer by day and an aspiring Rails developer at night. I am trying to use Rails and MySQL as my DB. I have successfully installed both. However, I am running into a really strange problem and really need some advice on how to get these two to work together. Here is the error message I get:
[rake --tasks] dyld: lazy symbol binding failed: Symbol not found: _mysql_get_client_info
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
Expected in: flat namespace
dyld: Symbol not found: _mysql_get_client_info
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle
Expected in: flat namespace
I have scoured the StackOverflow and have tried many things. I am sincerely hoping someone can help me. I have this all installed and running on a brand new MacBook Pro Retina. I am not terribly familiar with the underlying nuts and bolts of the OS in terms of the command line but can work my way around somewhat.
How do I get rid of this problem?
EDITED TO SHOW GEMFILE
source 'https://rubygems.org'
gem 'rails', '3.2.8'
# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'
gem 'mysql2'
gem 'json'
# Gems used only for assets and not required
# in production environments by default.
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer', :platforms => :ruby
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
Related
I am trying to deploy my jekyll app on the Cloudcannon CMS platform for Jekyll, but my build fails with this output:
Syncing raw files... done
Checking existing local bundle state... failed
Loading gem cache...
Checking gem cache (bundle_cache/Jw8rkIm9v3Cmawv2raEpkN96fz3R5X1Q_XMn7xpGB1s.zip)... no cache
$ export JEKYLL_ENV="production"
$ ruby -v
ruby 2.3.8p459 (2018-10-18 revision 65136) [x86_64-linux]
$ bundle version
Bundler version 2.0.1 (2019-01-04 commit d7ad2192f)
$ bundle config --global jobs 4
Configured concurrent installs!
$ bundle install
Using local cacheable path...
Fetching gem metadata from https://rubygems.org/...........
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies...
jekyll-feed-0.12.0 requires ruby version >= 2.4.0, which is incompatible with
the current version, ruby 2.3.8p459
What am I doing wrong and how can I update the ruby version correctly?
My Gemfile looks like this:
source "https://rubygems.org"
# Hello! This is where you manage which Jekyll version is used to run.
# When you want to use a different version, change it below, save the
# file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
#
# bundle exec jekyll serve
#
# This will help ensure the proper Jekyll version is running.
# Happy Jekylling!
gem "jekyll", "~> 3.8.5"
# This is the default theme for new Jekyll sites. You may change this to anything you like.
gem "minima", "~> 2.0"
# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
# uncomment the line below. To upgrade, run `bundle update github-pages`.
# gem "github-pages", group: :jekyll_plugins
# If you have any plugins, put them here!
group :jekyll_plugins do
gem "jekyll-feed", "~> 2.4.0"
end
# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
# Performance-booster for watching directories on Windows
gem "wdm", "~> 0.1.0" if Gem.win_platform?
I tried to change the jekyll-feed version and bundle it again but it gave me the same results and I don't want to remove that plugin because I need it.
The issue could be from your Gemfile.lock.
The latest version of jekyll-feed is 0.12.1
Correct your Gemfile to point to any version of jekyll-feed greater than or equal to 0.12.0:
gem "jekyll-feed", "~> 0.12"
The run bundle update so that the new version is installed and included in your Gemfile.lock
Then commit and push your updated Gemfile and the Gemfile.lock into your remote repository.
Jordan from CloudCannon here.
ashmaroli is correct, you're referencing an invalid version number for jekyll-feed. Following ashmaroli's steps should resolve the problem.
As a side note, we'll be adding support for multiple Ruby versions within the next month or two. This will resolve any future incompatibilities with plugins that require a later version of Ruby.
If you have any more questions feel free to contact us, we're more than happy to help :)
I'm fairly new when it comes to commandline or Rails, but work on a rails project where I'm doing the frontend.
I've installed all gems that are needed for the project, but lately some errors occur when doing a rake:db migrate or today when trying to deploy the current version via cap production deploy
The problem I'm facing seems to have todo with the mysql2 gem. At least that is what the console says.
When running cap production deploy I get this error:
rake stdout: Nothing written
rake stderr: rake aborted!
Gem::LoadError: Specified 'mysql2' for database adapter, but the gem is not loaded. Add `gem 'mysql2'` to your Gemfile.
and further down this …
Gem::LoadError: can't activate mysql2 (~> 0.3.10), already activated mysql2-0.4.2. Make sure all dependencies are added to Gemfile.
What do I have todo here? When I do gem list I see that mysql2 is installed.
Thank you,
Matt
Rails used to have the mysql2 gem locked down to ~>0.3 in the codebase.
So that is what it looks for but your Gemfile will simply state
gem "mysql2"
Pretty sure they've updated this in the latest release of rails 4 so either:
Update to the latest version of rails 4 or use a specific version of the mysql2 gem
gem "mysql2", "~> 0.3.20"
I am getting the message Could not find generator bootstrap:install on Rails 4.1.6
My gem file looks like this:
source 'https://rubygems.org'
# Bundle edge Rails instead: gem 'rails'
gem 'rails', '4.1.6'
# Use postgresql as the database for Active Record
gem 'pg'
# Use SCSS for stylesheets
gem 'sass-rails'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster.
gem 'turbolinks'
# Build JSON APIs with ease.
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0', group: :doc
# Spring speeds up development by keeping your application running in the background.
gem 'spring', group: :development
gem 'devise'
gem "therubyracer"
gem "less-rails" #Sprockets (what Rails 3.1 uses for its asset pipeline) supports LESS
# twitter bootstrap css & javascript toolkit
gem 'twitter-bootstrap-rails', :git => 'git://github.com/seyhunak/twitter-bootstrap-rails.git'
# twitter bootstrap css & javascript toolkit
gem 'twitter-bootswatch-rails', '~> 3.2.0'
# twitter bootstrap helpers gem, e.g., alerts etc...
gem 'twitter-bootswatch-rails-helpers'
twitter-bootstrap-rails version is 3.2.0
therubyracer version is 0.12.1
execjs version is 2.2.2
When I run rails generate bootstrap:install less in command line, I get the above error. I do not understand what am I doing wrong.
I have a Ruby on Rails app that I want to compile/package as a WAR file to host in Tomcat. I've added all of the relevant stuff I can find, but the WAR only appears to include the non-JRuby versions of gems. As a result, I get GemNotFound exceptions such as "could not find activerecord-jdbc-adapter" in Tomcat. If I open the WAR file in 7-zip, it does not show any of the JRuby or Java gems under /WEB-INF/gems/gems.
Warbler does not report any errors or warnings, and the WAR appears to contain everything it needs, except for these gems.
(Because this is a lightweight, internal app, I'm using sqlite for now... which explains the sqlite gems. The DB is stored outside the project and configured in the database.yml file.)
The relevant snippet from my Gemfile:
if defined?(JRUBY_VERSION)
gem 'jdbc-sqlite3'
gem 'activerecord-jdbc-adapter'
gem 'activerecord-jdbcsqlite3-adapter'
gem 'jruby-openssl'
gem 'jruby-rack'
else
gem 'sqlite3'
end
I also tried explicitly including/excluding these gems in the warble.rb file:
config.gems -= ["sqlite3"]
config.gems += [
"jdbc-sqlite3",
"activerecord-jdbc-adapter",
"activerecord-jdbcsqlite3-adapter",
"jruby-openssl",
"jruby-rack",
"warbler"
]
As an interesting side note, if I modify my Gemfile to demand the JRuby gems, jruby -S bundle install works fine but warble gives a series of errors stating that the gems are only for use with JRuby. On the other hand, if I try to run it within JRuby (jruby -S warble) I get:
warble aborted!
no such file to load -- jruby_pageant
How can I convince Warbler that I want the JRuby gems?
Edit:
I also tried specifying platforms in the gemfile, as described in this blog post, but this causes warble to stack-overflow.
platforms :jruby do
gem 'jdbc-sqlite3'
gem 'activerecord-jdbc-adapter', :require => false
gem 'activerecord-jdbcsqlite3-adapter', :require => false
gem 'jruby-openssl'
gem 'jruby-rack'
end
platforms :ruby do
gem 'sqlite3'
end
Versions:
ruby 1.9.3
jruby 1.7.4
warbler 1.3.8
So it turns out that I was missing the jruby-pageant gem. Once I added this to the bundle, jruby -S warble produced the expected output.
How can I conditionally choose which gem to use based on the Ruby VM currently in use?
Ideally I would like something like:
if [using jruby]
gem 'jruby-openssl'
This would only require the jruby-openssl if the RVM being used is JRuby.
Use the following in your Gemfile, as documented here: https://github.com/jruby/activerecord-jdbc-adapter
platforms :ruby do
gem 'sqlite3'
end
platforms :jruby do
gem 'jruby-openssl'
gem 'activerecord-jdbcsqlite3-adapter'
end
Attempting to answer my own question here.
We can do this using the following Gemfile directive:
if defined?(JRUBY_VERSION)
gem 'jdbc-sqlite3'
else
gem 'sqlite3'
end