I feel I've gone through every post on this subject, and I'm still banging my head against the wall.
I am running...
Mac OS 10.6.6
MySQL 5.1.4.4 (on MAMP) or (MySQL 5.5.8 in my /usr/ directory) both can be running and work fine
Ruby 1.8.7 (2010-12-23 patchlevel 330) [i686-darwin10.6.0] (using RVM)
Rails 2.2.2
Gem 1.4.2
MySQL gem 2.8.1 (it says it's installed)
When I fire up the RoR app I've been developing, the mongrel appears to load fine. When I try to bring up the app in my browser I get the following error...
/!\ FAILSAFE /!\ Thu Jan 20 19:46:07 -0500 2011
Status: 500 Internal Server Error
uninitialized constant MysqlCompat::MysqlRes
then what follows are a bunch of lines like...
/Users/PJ/.rvm/gems/ruby-1.8.7-p330/gems/activesupport-2.2.2/lib/active_support/dependencies.rb:442:in `load_missing_constant'
I feel I have tired every variation of the ARCHFLAGS solutions that have been previously suggested on other posts. None have worked.
I am using MAMP and RVM as I have done other uninstalls and re-installs of MySQL, Ruby, Rails and various gems in attempts from other suggested solutions.
The app worked fine prior to my update to Snow Leopard. I am not a very sophisticated developer type, so I apologize in advance for being, well, not the brightest.
Try this AFTER making sure that Xcode is installed on your system.
gem uninstall mysql
export ARCHFLAGS="-arch i386 -arch x86_64" ; gem install --no-rdoc --
no-ri mysql -- --with-mysql-dir=/usr/local --with-mysql-config=/usr/
local/mysql/bin/mysql_config
I coudn't ever seem to get the 2.8.1 mysql gem to work.
I downgraded it to the 2.7 version which led to a series of new errors (a DYLD_LIBRARY_PATH error), but it was eventually figured out and I am up and running again.
Related
I am trying to migrate from windows 7 to mac osx .
I have installed the following
ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
mysql Ver 14.14 Distrib 5.1.56, for apple-darwin10.3.0 (i386) using
readline 5.1
After a lot of pain I installed my sql gem by :
sudo env ARCHFLAGS="-arch x86_64" gem install --no-rdoc --no-ri mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
But still when I run my project in netbeans I get the following error
[4;36;1mUser Columns (31.5ms)[0m
[0;1mSHOW FIELDS FROM users[0m
[4;35;1mSQL (1.2ms)[0m [0mSHOW
TABLES[0m /!\ FAILSAFE /!\ Wed May
04 09:53:16 +0530 2011 Status: 500
Internal Server Error undefined
method `where' for
Can anyone tell me what am I doing wrong ?
The database migrations are working perfectly.
You stopped copying the stack trace right at the point where it was about to tell you where the error occurs. Look down the stack trace for the first mention of any code from your app (as opposed to the gems or the vendor folder) and it should point you to the problem line.
It's unfortunate that you've having such a time installing the MySQL gem, but this can be complicated if you're loading it on a from-scratch machine that's missing the development headers, something required to compile the extension, and your path does not include /usr/local/mysql/bin which is common.
You can fix that by creating a file /etc/paths.d/mysql with the following:
/usr/local/mysql/bin
Generally you should just have to list mysql in your Gemfile after that, and it should install conventionally with bundle install.
As for the error, it looks like something deeper in your application that's blowing a gasket. When you say "run your project in netbeans," but do you mean run unit tests? It looks like you're calling where on something that doesn't support it.
This looks like an application error. The server is bailing with a 500 when it fails to evaluate the method 'where', somewhere likely in your code.
Modern Mac operating systems (forget which was the first) come with ruby and rails pre-installed - not sure if this is related to your setup.
What happens when you run
rails server
from the console (from within the directory of the app) ?
where is a ActiveRecord 3 AREL class method used for conditions.
First things first, do you have XCode installed? thats a prerequisite to installing any native gems. You can download XCode 3 from the apple site or buy XCode 4 from the app store.
More of the stack trace is required.
Ideally though, once you have installed XCode, you should take a look at https://rvm.io - it's the preferred way for managing rubies on Unixy systems.
Thanks guys.. I finally found the error was with the authlogic gem
I had installed 3.0.2
and the application requires an older version 2.x
I've been struggling with this for a few hours. Everything just stopped working and I can't get it to work anymore. I'm a noob at Ruby, Ruby on Rails and the Terminal in general. This is really frustrating me so I just try to describe my problem as detailed as possible hoping someone can give me a solution.
I'm on Mac OS X Snow Leopard. I couldn't get Rails working at all just now: Could not find gem 'rails' headaches
But after some tries of reinstalling it, it suddenly worked again. But now I just can't get MySQL to work, and it sometimes even breaks the Rails installation again.
This is what I do:
sudo gem uninstall rails
sudo gem uninstall mysql
sudo gem uninstall mysql2
After these commands, I check the installed gems with gem list. No MySQL gem is listed anymore, but I can still see rails (2.3.5, 2.2.2, 1.2.6)
. Is this normal? Does this mean I have 3 Rails installations? It doesn't make sense to me. Anyway, then I do this:
sudo gem clean
Which fails completely. I get a bunch of errors like this:
Attempting to uninstall fcgi-0.8.7
Unable to uninstall fcgi-0.8.7:
Gem::InstallError: cannot uninstall, check gem list -d fcgi
It doesn't uninstall anything. At this point, I try to install everything again. I start with:
sudo gem install rails
Which succeeds (I think):
Successfully installed rails-3.0.3
Successfully installed builder-2.1.2
2 gems installed
Installing ri documentation for rails-3.0.3...
File not found: lib
Then, I update RubyGems:
sudo gem update --system
sudo gem install rubygems-update
sudo update_rubygems
Then it says I have 1.3.7 installed, so it succeeded, I think. So now I proceed with installing MySQL. I already got MySQL 5.5.8 installed on my machine. I did some research about installing MySQL on Snow Leopard, and it seems I have to use this command:
sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
I get a bunch of errors like this:
No definition for time_set_neg
No definition for time_set_second_part
No definition for time_equal
No definition for error_errno
At this point, I assume I got both Rails and the MySQL gem installed, so I try to start a new project.
rails new user_group -d mysql
It works! Rails is installed correctly. Now, I try generating a model.
cd user_group
rails generate model User
It fails with this error:
Could not find gem 'mysql2 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.
Try running bundle install.
So I try running bundle install. It installs a lot of gems. Then I try to generate my model again. I get this error:
Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError)
Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
This is as far as I can get. What should I do? And why should this be so hard...
Snow Leopard supplies Ruby 1.8.7. Ruby 1.8.7 doesn't automatically add the require 'rubygems' command to a Ruby script, like 1.9.2 will, so in general you need to add that to your script. That fixes the problems with Ruby not finding the gems called by your code in a lot of cases. Rails is a different animal, but the version with 1.8.7 is well documented so you should have found a fix pretty quickly.
The Ruby supplied by Snow Leopard is really for its own use. Users can piggyback on that, but it's installed by Apple because they have applications that use it. Use locate podcast | grep rb$ to see. Similarly, Perl and Python in Snow Leopard are used to support code Apple has installed so messing with them is not a good idea. Changing the built-in Ruby, Perl or Python usually won't cause the system to explode in flames, but it can cause irritating and unexplained problems farther down the road when system maintenance routines stop working.
By using sudo to remove gems installed by Apple and add new ones, you've left your system Ruby in an unexpected state as far as Apple's apps are concerned. Rather than mess with Apple's Ruby, you should install a separate Ruby for your own use using Fink or MacPorts, or from source code, or by using RVM.
Personally, I use RVM because it creates a ~/.rvm sandbox in your home directory, and makes it easy to manage multiple versions of Ruby and gems. RVM requires you to install the XCode development library, which you can download from http://developer.apple.com/technologies/ after a free registration. XCode is also on your system DVD, but that version is reported to be buggy, so use the downloaded version.
Make sure to add the MySql gem to that projects gemfile with the following code:
gem 'mysql', '2.8.1'
Run a bundle install/update and try it. You told it to use MySQL and the gem might even be installed, but you aren't loading it.
Also, you're failing at a couple of points: notice the
File not found: lib
Then again, I could be completely wrong about this - it's my attempt at providing a clue for your troubleshooting.
I'm on Windows, and I have a working Rails 2.3.8 app on Ruby 1.8.6 with MySQL 5.0 and the mysql gem version 2.8.1. It all works.
I just installed Ruby 1.9.1, installed gems for rails(2.3.8) and mysql. BUT NOW when I run ruby script/server:
!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.
I ALREADY INSTALLED IT!
One thing that might be a problem:
When I run "gem list" in my working ruby (v1.8.6) install, it lists "mysql (2.8.1)". BUT when I run "gem list" in the new ruby install (v1.9.1), it lists "mysql (2.8.1 x86-mingw32)". If that's the cause, how do I fix it? If it's not, what on earth is keeping Rails from recognizing the installed mysql gem?
Thanks in advance. I'm sure this is a common upgrade path, so I can't be the only one with this problem...
Finally got some solid info.
Apparently the mysql gem sucks, and shouldn't be relied on going forward.
That's why Rails 3.0.0 officially endorses the mysql2 gem instead (gem install mysql2), which unfortunately is not supported under Windows yet, though the gem's developer seems to be working on it.
As I try to get my app to Rails 3, I'm just going to make the easy switch to sqlite3 until there's a good mysql gem for windows.
Trying to start a new Rails 3 beta 4 app with mysql.... Running OS X Snow Leopard. WIth previous versions of Rails I have no problem with MySQL. But now when I start the Rails 3 app I get the following error when I click "About Your Application Environment" on the Rails index.html startup screen:
undefined method `init' for Mysql:Class
Change your Gemfile to use 'mysql2', it's a more modern driver and has nicer features as other people have mentioned.
New Rails applications use the mysql2 gem by default.
I ran into the same issue (RoR 3, OSX 10.6, mysql 2.8.1 gem).
You can use irb to rule out RoR:
irb
require 'rubygems'
require 'mysql'
db = Mysql.connect('hostname', 'username', 'password', 'database')
If the above doesn't work, you may want to try removing the mysql gem and reinstalling it. I came across a post saying bundle install might mess up the install without displaying errors.
sudo gem uninstall mysql
sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
Verify things work via irb, then start up rails again.
I ended up switching from the mysql gem to the ruby-mysql gem, worked.
For simple usage, which is typical (connecting, querying, iterating over results), I found mysql2 gem which is much faster than mysql or ruby-mysql gems and auto-casts values to proper types. And it installes perfectly on Snow Leopard while I couldn't get mysql gem to work.
More info at http://github.com/brianmario/mysql2
I think I have found the solution for the problem. In my case the problem was that the mysql gem hasn't been properly installed using the bundler . when I did this:
bundle install mysql (noobish mistake)
all gems went to mysql directory, but later on I have checked the docs of the bundler gem
and did this:
bundle install bundler_files ( to know where the gems are in the future)
everything looked almost ok except that when mysql gem was installing i got some errors.
I noticed that it was because of my folder path "/home/pawel/Aptana Studio Workspace/myrails_app"
If you have spaces in your folder path this gem wont install properly and later on when you modify the path to one without spaces and try to install the mysql gem IT WONT DISPLAY ANY ERRORS, but the installation will be corrupted, because you will have some extra folders there with some files etc. so
DELETE THE GEM FOLDER CREATED BY BUNDLER AND REINSTALL GEMS WITH THIS COMMAND:
bundle install
That solved the problem.
you can try switching to the mysql2 gem which should resolve all that issues for you. see: https://github.com/brianmario/mysql2/
I think what happens is that the mysql gem isn't able to load the mysql dynamic library (supposed to be supplied by the native MySQL installation). To test whether this is happening, do this
$ irb
1.9.2p320 :001 > require 'mysql_api'
=> true
1.9.2p320 :002 >
If it isn't able to load this low level mysql_api, (which actually supplies the functionality to the mysql gem), it will give you some potentially useful errors. Usually it is not able to find the dynamic library. To remedy this, I found a couple of solutions:
From http://wonko.com/post/how-to-install-the-mysqlruby-gem-on-mac-os-x-leopard, do this
For system-wide install
sudo env ARCHFLAGS="-arch i386" gem install mysql -- \
--with-mysql-dir=/usr/local/mysql --with-mysql-lib=/usr/local/mysql/lib \
--with-mysql-include=/usr/local/mysql/include
or local install
env ARCHFLAGS="-arch i386" gem install mysql -- \
--with-mysql-dir=/usr/local/mysql --with-mysql-lib=/usr/local/mysql/lib \
--with-mysql-include=/usr/local/mysql/include
and then from http://alexbraunstein.com/2011/08/12/library-loaded-libmysqlclient-18-dylib/ put in .bash_profile:
export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH
I has the same issue after upgrading to Snow Leopard. On installing the MySQL gem, I got a bunch of errors about the documentation, then, on running the server:
undefined method `init' for Mysql:Class
I was also having some similar, but unrelated issues with other gems, particularly those that had C components that needed compiling such as RedCloth and hpricot:
Unable to compile native extensions
These errors were to do with native extensions in base 64 architecture. The solution was threefold:
I reinstalled XCode 4. The upgrade to Snow Leopard had broken my C compiler, so some gems were failing to compile. This took me a step closer, but didn't fix the issue.
I blew away and reinstalled RVM. It appeared to be installing gems in one directory, and finding them in another. This fixed every native architecture base64 error, but the MySQL gem was still failing.
I removed and downgraded MySQL to version 5.1. This fixed the MySQL gem issue.
All is now well again.
I have a rails environment which I set-up with macports. I recently updated macports which seems to have had the side effect of breaking rails. When I try to boot a rails server I get:
$ ./script/server
=> Booting WEBrick
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
/opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010. Use #requirement
!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.
/opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin9/mysql.bundle: dlopen(/opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin9/mysql.bundle, 9): Library not loaded: /opt/local/lib/mysql5/mysql/libmysqlclient.15.dylib (LoadError)
Referenced from: /opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin9/mysql.bundle
Reason: image not found - /opt/local/lib/ruby/vendor_ruby/1.8/i686-darwin9/mysql.bundle
I've tried reinstalling the mysql gem many times using various configurations I've found around the web but nothing seems to help. Also, when I try to use rake I get:
rake db:migrate
Rails requires RubyGems >= 1.3.1 (you have 1.0.1). Pleasegem update --systemand try again.
Even though:
gem --version
1.3.6
What's going on here?
It seems the problem was that I had rails installed under macports, and also as a gem. I uninstalled all the rails components from macports and just stuck with the gems version and it seems to have made the MySQL problem go away.