Rails problem, sqlite3 gem not being seen - ruby-on-rails

Running RoR under Cygwin, I have installed sqlite3 and sqlite3-ruby gems but they aren't being found. In development.log I get:
Status: 500 Internal Server Error
RubyGem version error: sqlite3(1.3.3 not >= 0)
And if I try rake db:migrate I get:
$ rake db:migrate
(in /home/projects/sample)
rake aborted!
RubyGem version error: sqlite3(1.3.3 not >= 0)
I have installed the gems:
$ gem list
*** LOCAL GEMS ***
actionmailer (2.3.4)
actionpack (2.3.4)
activerecord (2.3.4)
activeresource (2.3.4)
activesupport (2.3.4)
bundler (1.0.10)
cgi_multipart_eof_fix (2.5.0)
daemons (1.1.0)
envy (0.0.1)
fastthread (1.0.1 i386-mswin32)
gem_plugin (0.2.3)
mongrel (1.1.5 x86-mswin32-60)
mysql (2.8.1 x86-mswin32)
rack (1.2.1, 1.0.0)
rails (2.3.4)
rake (0.8.7)
rdoc (3.5.3)
rubysspi (1.3.1)
sqlite3 (1.3.3 x86-mswin32-60)
I have tried installing and uninstalling the sqlite3-ruby.gem too but that doesn't help.
Sqlite3 works fine by itself:
$ sqlite3
SQLite version 3.7.3
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite>

I have a feeling your are making use of sqllite3-ruby gems for Windows,
Do note, you would have to use OS/environment specific ruby gems for them to work for you, if I am correct to the best of my knowledge. In your case Cygwin seems to be a Linux type environment, thus why don't you try to install gems suiting the Linux environment and check if this does the trick for you..
Also, Have you installed the sqlite3 DB and configured your rails_app_name/config/database.yml file. You need to in this file specify details like username, password etc.
I make use of MySQL DB and related gems. You seem to have that installed too.. if sqlite3 DB doesn't work for you just give a try with MySQL DB. You need to installed this DB also and again fill in the required details to configure your DB with the rails app in your database.yml.
Hope this helps!
Good Luck!

I ended up downloading the SQLite3 headers (sqlite3.h and sqlite3ext.h) and placing them in the directory then
$ gem install sqlite3-ruby-1.2.3-mswin32.gem -- --curdir
You need the first empty -- option qualifiers to signify that the second set is for the specific .gem file, not the gem command.

Related

I keep getting this error ' Bundler could not find compatible versions for gem "bundler": '

I'm running Ruby 1.9.3 and Rails 4.0.0, and I'm just starting to learn how to use Ruby on Rails. Whenever I type the command to run the server:
$ rails s
I get this error:
Bundler could not find compatible versions for gem "bundler":
In Gemfile:
rails (= 4.0.0) depends on
bundler (< 2.0, >= 1.3.0)
Current Bundler version:
bundler (1.0.15)
So I updated it and then checked the version of the bundler using this command:
$ gem list bundler
And this is the result I get:
*** LOCAL GEMS ***
bundler (1.3.5, 1.3.0)
Although it says this, I still continue to get the error as mentioned above. Anyone know how to fix this? Thanks
You may have to prefix it with bundle exec:
bundle exec rails server
You can check bundler's version using
bundle -v
Prefixing your rails / rake command using bundle exec before will ensure ruby will use the gems required by your application.
bundle exec rails s

can't activate multi_json (~> 0.0.5, runtime) for ["instagram-0.8"], already activated multi_json-1.0.3 for []

I am making an instagram application using rails, but I keep getting this error every time I start my application:
can't activate multi_json (~> 0.0.5, runtime) for ["instagram-0.8"],
already activated multi_json-1.0.3 for []
My rails version is 3.0.4 and instagram gem has been installed (gem install instagram). What am i doing wrong?
Thanx in advance!
You should use bundler to manage your dependencies, rather than using rubygems directly.
If you use bundler, then execute your scripts with bundle exec <usual command here>, for example, bundle exec rspec spec/.
Bundler deals with all these issues for you. You may have to uninstall the gems you have installed manually in order to get this error to go away, however.

ubuntu ruby on rails installation

I installed RoR on ubuntu 10, using all kinds so method i could find on internet, either "sudo apt-get" or "sudo gem install", by running 'gem list', i can see they are all the latest version:
*** LOCAL GEMS ***
actionmailer (2.3.8)
actionpack (2.3.8)
activerecord (2.3.8)
activeresource (2.3.8)
activesupport (2.3.8)
fastthread (1.0.7)
mysql (2.8.1)
passenger (2.2.15)
rack (1.1.0)
rails (2.3.8)
rake (0.8.7)
rubygems-update (1.3.7)
but when i created a ror application by running 'rails samplecode', then run 'script/about', it always showed:
About your application's environment
Ruby version 1.8.7 (x86_64-linux)
RubyGems version 1.3.5
Rails version 2.2.3
Active Record version 2.2.3
Action Pack version 2.2.3
Active Resource version 2.2.3
Action Mailer version 2.2.3
Active Support version 2.2.3
Edge Rails revision unknown
Application root /home/kc/Projects/samplecode
Environment development
Database adapter mysql
why these 2 settings are different? how can i force the application to use the local gems (latest version)? Thanks.
Ubuntu (aptitude/apt-get) installs gems in /var/lib/gems/1.8. When you run gem install manually, you're likely installing them in /usr/lib/ruby/gems/1.8.
Run "gem env" and look at what the gem path(s) is/are.
If you set the GEM_HOME environment variable (GEM_HOME=/usr/lib/ruby/gems/1.8), you can have you application look there.
Alternately, you can install the gems you want (including rails) in your application's vendor directory by putting config.gem lines in environment.rb and running rake gems:unpack:dependencies.
Uninstall the apt-get version of Rails:
sudo apt-get remove rails
And then install Rails again using gem:
sudo gem install rails

deployment for jruby on rails app

I am trying to deploy a jruby on rails application.
Right now I am running mongrel + Apache2 using reverse proxy from mod_proxy. However, because mongrel_jcluster does not work for the latest versions of jruby, I am only able to run one mongrel server, and cant take advantage of load balancing from apache2.
Is there any way other way to create a mongrel cluster? I'd really prefer mongrel cluster + apache2 to a java servlet type system.
I've tried jetty using the instructions here: http://jetty-rails.rubyforge.org/
but I get the following error when starting up the jetty server, even though I've checked my activerecord-jdbcmysql-adapter gem version under jruby and its there and version 0.9.7
DEPRECATION WARNING: require "activesupport" is deprecated and will be removed in Rails 3. Use require "active_support" instead. (called from /home/andrew/.gem/jruby/1.8/gems/activesupport-2.3.8/lib/activesupport.rb:2)
2010-07-20 17:00:46.820::INFO: Logging to STDERR via org.mortbay.log.StdErrLog
Starting server 3000
2010-07-20 17:00:47.134::INFO: jetty-6.1.14
2010-07-20 17:01:03.511:/:INFO: Info: using runtime pool timeout of 30 seconds
2010-07-20 17:01:03.511:/:INFO: Info: received min runtimes = 1
2010-07-20 17:01:03.511:/:INFO: Info: received max runtimes = 5
Loading parser from serialized file lib/stanford-parser/englishPCFG.ser.gz ... done [4.6 sec].
2010-07-20 17:01:14.341:/:WARN: Error: unable to initialize application
org.jruby.rack.RackInitializationException: Please install the jdbcmysql adapter: `gem install activerecord-jdbcmysql-adapter` (no such file to load -- active_record/connection_adapters/jdbcmysql_adapter)
any suggestions would be appreciated, thanks!
EDIT: I don't know if this makes a difference, but I am able to tell that before it crashes, jetty_rails successfully loads a global variable declared in the environment.rb
EDIT: here is my full gem list from jruby -S gem list --local
*** LOCAL GEMS ***
actionmailer (2.3.8)
actionpack (2.3.8)
activerecord (2.3.8)
activerecord-jdbc-adapter (0.9.7)
activerecord-jdbcmysql-adapter (0.9.7)
activeresource (2.3.8)
activesupport (2.3.8)
builder (2.1.2)
gem_plugin (0.2.3)
jdbc-mysql (5.0.4)
jetty-rails (0.8.1)
jruby-jars (1.5.1)
jruby-openssl (0.7)
jruby-rack (1.0.1)
mizuno (0.3.6)
mongrel (1.1.5)
rack (1.1.0)
rails (2.3.8)
rake (0.8.7)
rubyzip (0.9.4)
sources (0.0.1)
warbler (1.1.0)
Maybe you're switching between multiple ruby interpreters (via RVM or manually). Make sure
that you have 2.3.8 gems for rails and it's dependencies by running "gem list" using Jruby.
If you don't have the gems under Jruby, run "gem install -v=2.3.8 rails".
You could pack the rails gems inside the project tree by running "rake rails:freeze:gems".
The only possible answer that I know is that you have two ruby interpreters on the system, and the one being picked up by the jetty environment is missing gems. Does ruby -v give you a different answer than jruby -v?
That being said, is there a reason why you don't want to use warble and deploy a war to Jetty or Tomcat? I find that works well.

rvm conflit with sqlite3

$: /Users/dev/.rvm/gems/ruby-1.9.2-head#rails3/gems/sqlite3-ruby-1.3.1/lib/sqlite3/sqlite3_native.bundle: [BUG] Segmentation fault
ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
Abort trap
It's seem that ruby is not the correct version (1.8.7) but :
$: ruby - v
$: ruby 1.9.2dev (2010-07-15 revision 28653) [x86_64-darwin10.4.0]
$: gem list
*** LOCAL GEMS ***
abstract (1.0.0)
actionmailer (3.0.0.beta4, 3.0.0.beta3)
actionpack (3.0.0.beta4, 3.0.0.beta3)
activemodel (3.0.0.beta4, 3.0.0.beta3)
activerecord (3.0.0.beta4, 3.0.0.beta3)
activeresource (3.0.0.beta4, 3.0.0.beta3)
activesupport (3.0.0.beta4, 3.0.0.beta3)
arel (0.4.0, 0.3.3)
builder (2.1.2)
bundler (0.9.26)
erubis (2.6.6)
i18n (0.4.1, 0.3.7)
mail (2.2.5)
memcache-client (1.8.5)
mime-types (1.16)
polyglot (0.3.1)
rack (1.1.0)
rack-mount (0.6.9)
rack-test (0.5.4)
rails (3.0.0.beta4, 3.0.0.beta3)
railties (3.0.0.beta4, 3.0.0.beta3)
rake (0.8.7)
rdoc (2.5.9)
sqlite3-ruby (1.3.1)
text-format (1.0.0)
text-hyphen (1.0.0)
thor (0.13.8)
treetop (1.4.8)
tzinfo (0.3.22)
will_paginate (3.0.pre)
more info :
$: ~ dev$ ruby -v
ruby 1.9.2dev (2010-07-15 revision 28653) [x86_64-darwin10.4.0]
$ :~ dev$ rails -v
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:827:in `report_activate_error': Could not find RubyGem rails (>= 0) (Gem::LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:261:in `activate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:68:in `gem'
from /usr/bin/rails:18
Any ideas ?
Thanks very much :)
Had the same issue after moving to 1.9.2p0, but restarting the console on Snow Leopard did the trick. Seems rvm might have gotten confused.
Same problem for me on Snow Leopard; even though under rvm 1.9.2#rails3, I can see correct rails version number.
I have to use following command to use rails command:
ruby which rails g scaffold User name:string bio:text
Any solution?
I've finally found the reason. Looks like gem install rails is not managed to install the proper binary for rails in rvm. And rails is still references /usr/bin/rails, which have a #! line point to System ruby.
You can see it with:
head -1 `which rails`
which returns:
#!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Change that to:
#!/usr/bin/env ruby
will fix the problem. I don't know if this problem affect other executable scripts gem installs, but why gem not install rails to rvm's own bin path is a mystery to me. Anyway, this workaround do the dirty for me.
I Had the same problem when using ree-1.8.7-2011.03. (Ruby enterprise Edition)
I uninstalled the sqlite3 gems then I ran:
gem install sqlite3
and it worked. Note that the sqlite3-ruby gem now recommends to use 'sqlite3' now.
I don't know how this has happened in your case but it looks to me that Rails has tried to run with your system installed Ruby but is loading gems from a 1.9.2 load path. Very odd.
You see the correct Ruby version in your shell (RVM has precedence in the local path) but that's not apparently what Rails is being started with.
Check to see you how you are starting Rails and that you don't have paths or links or aliases messed up between Ruby versions
You might need to run
rvm reload
Same problem after a bunch of updates (rvm to 1.5.2 and ruby to 1.9.2-p180)
Console restart did not work for me, updating to rails 3.0.6 changed the error to a seg error of mysql2 instead of sqlite3, re-installing mysql2 did the trick for me finally.
Regards
Michael
I encountered this exact error in zsh and MacVim, and eventually tracked it back to this RVM issue. The solution was to move the RVM sourcing I had in .zshrc to .zshenv. Worked immediately. Just posting on the off chance someone stumbles across this the way I did.
There is a known issue with zsh, rvm and vim.
The latest solution is to set the shell to sh in your .vimrc
set shell=sh
This blog has all the solutions listed

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