Morning,
I have a situation where I do not have the ability to add gems into
production. I can provide a ruby script to be ran by the Operations
Team, but I can’t ask that they install a gem I use. Also, stuck at
Ruby v.1.8.5.
Is it possible to ‘package’ a gem into a directory structure with my
app? For example:
<appfolder>
app.rb
config.yml
README.txt
…
\gem
\fastercsv
…
\ruby-sqlite3
…
\lib
\sqlite3
…
How would I go about telling my app to use these gems in my directory
structure and not any that might happen to be available in the system
(or not)? Then I could zip up the whole directory, send to operations,
where they would install this app and run according to instructions.
I hope I described this right. If not let me know how I can add to
this confusion. 
Thanks
Eric
On Wed, Aug 5, 2009 at 5:12 PM, Eric P.[email protected] wrote:
<appfolder>
\sqlite3
…
How would I go about telling my app to use these gems in my directory
structure and not any that might happen to be available in the system
(or not)? Then I could zip up the whole directory, send to operations,
where they would install this app and run according to instructions.
I hope I described this right. If not let me know how I can add to
this confusion. 
I’m not sure if it’s the best way, but you could manipulate
ENV[‘gem_home’] from your script.
C:>cd myapp
C:\myapp>gem list fastercsv
*** LOCAL GEMS *** # fastercsv not installed
C:\myapp>type myapp.rb
ENV[‘GEM_HOME’] = ‘./gem’
require ‘rubygems’
require ‘fastercsv’
C:\myapp>gem in fastercsv -i gem #install fastercsv inside app/gem
folder
Successfully installed fastercsv-1.5.0
1 gem installed
Installing ri documentation for fastercsv-1.5.0…
Installing RDoc documentation for fastercsv-1.5.0…
C:\myapp>dir /b gem
cache
doc
gems
specifications
C:\myapp>ruby myapp.rb
Also tried, but still get no such file to load – html-table (LoadError)
when I attempt to require it.
Gem.clear_paths
ENV[‘GEM_HOME’] = File.join( ‘C:’, ‘Ruby’, ‘lib’, ‘ruby’, ‘site_ruby’,
‘1.8’ )
ENV[‘GEM_PATH’] = File.join( ‘C:’, ‘InWork’, ‘myApp’, ‘gem’ )
Gem.use_paths( ENV[‘GEM_PATH’], [ENV[‘GEM_HOME’]] )
require ‘rubygems’
require ‘html-table’
On Aug 6, 12:43 pm, Eric P. [email protected] wrote:
–
Posted viahttp://www.ruby-forum.com/.
since you appear to be on Windows, I suggest that you look into
“ocra”. This will package your code, gems that you use and ruby
interpreter as a stand alone executable program.
hmm… well, something went wrong. I already have fastercsv installed,
so I found a different gem to test this. Installation to this defined
directory works fine.
C:\InWork\myApp>mkdir gem
C:\InWork\myApp>gem install html-table --install-dir gem
Successfully installed strongtyping-2.0.6-x86-mswin32-60
Successfully installed test-unit-2.0.3
Successfully installed structured_warnings-0.1.1
Successfully installed html-table-1.3.3
4 gems installed
C:\InWork\myApp>cat foo.rb
require ‘rubygems’
$LOAD_PATH << File.expand_path( File.dirname( FILE ) + ‘/gem’ )
ENV[‘GEM_HOME’] = ‘gem’
require ‘html-table’
include HTML
Table.html_case = “lower”
Table::Row.end_tags = false
Table::Row::Data.end_tags = false
table = Table.new
tr1 = Table::Row.new
tr2 = Table::Row.new
tr3 = Table::Row.new
tr1.content = “foo”, “bar”, “baz”
tr2.content = 1, 2, 3
tr3.content = %w/hello world/
table.push( tr1, tr2, tr3 )
table[0][1].align = “left”
puts table.html
C:\InWork\myApp>ruby foo.rb
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require': no such file to load -- html-table (LoadError) from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire’
from foo.rb:5
Appears to be ignoring the $LOAD_PATH I set before require this gem.
Eric
Yes, I am developing on this Windows box. Not happy about that. Soon I
expect to get a Mac laptop. But my QA_test/production boxes are Solaris
unix. I think one of the production app serves is a linux variant. I
don’t know which as I don’t have access to production. That is why I am
trying to make this be an all inclusive app delivery, since I can’t have
gems installed in all these places.
Confusing I know.
Eric
On Thu, Aug 6, 2009 at 11:23 AM, Eric P.[email protected] wrote:
4 gems installed
Table.html_case = “lower”
table[0][1].align = “left”
`require’
from foo.rb:5
Appears to be ignoring the $LOAD_PATH I set before require this gem.
Eric
Try setting ENV[‘GEM_HOME’] before requiring rubygems. Also, I don’t
think you require html-table, I think it’s html/table.
C:\myapp>gem install html-table -i gem
Building native extensions. This could take a while…
Successfully installed strongtyping-2.0.6
Successfully installed test-unit-2.0.3
Successfully installed structured_warnings-0.1.1
Successfully installed html-table-1.3.3
4 gems installed
C:\myapp>cat foo.rb
$LOAD_PATH << File.expand_path( File.dirname( FILE ) + ‘/gem’ )
ENV[‘GEM_HOME’] = ‘./gem’
require ‘rubygems’
require ‘html/table’
include HTML
Table.html_case = “lower”
Table::Row.end_tags = false
Table::Row::Data.end_tags = false
table = Table.new
tr1 = Table::Row.new
tr2 = Table::Row.new
tr3 = Table::Row.new
tr1.content = “foo”, “bar”, “baz”
tr2.content = 1, 2, 3
tr3.content = %w/hello world/
table.push( tr1, tr2, tr3 )
table[0][1].align = “left”
puts table.html
C:\myapp>ruby foo.rb
| foo
|
bar
|
baz
|
| 1
|
2
|
3
|
| hello
|
world
|
C:\myapp>
I must have something set up wrong on my box. Using your code exactly I
still get.
C:\InWork\myApp>ruby foo.rb
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require': no such file to load -- html/table (LoadError) from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire’
from foo.rb:4
somewhat frustrating. This should be easier.
ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]
gem 1.3.5
And I’ve been told that one of the prod boxes I’ll be going to uses
v.1.8.5. I hope it has rubygems installed, but I don’t know.
Eric
Well, that is interesting.
I will have to make sure that this environment variable is not set
before starting my app. Maybe put a kornshell wrapper around it.
Thanks much for your help.
Eric
On Thu, Aug 6, 2009 at 3:58 PM, Eric P.[email protected] wrote:
from foo.rb:4
somewhat frustrating. This should be easier.
ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]
The one-click installer for that version sets the rubyopt environment
variable, so rubygems is getting loaded earlier than we realize.
C:\myapp>pik sw 186 mswin
== Switching to ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32]
C:\myapp>ruby foo.rb
| foo
|
bar
|
baz
|
| 1
|
2
|
3
|
| hello
|
world
|
C:\myapp>set RUBYOPT=-rubygems
C:\myapp>ruby foo.rb
c:/ruby/186-p287-mswin32/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require': no such file to load -- html/table (LoadError) from c:/ruby/186-p287-mswin32/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’
from foo.rb:5
C:\myapp>set RUBYOPT=
C:\myapp>ruby foo.rb
| foo
|
bar
|
baz
|
| 1
|
2
|
3
|
| hello
|
world
|
Hope that does it.
