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Dylan Mccarthy

2010-Aug-03 17:43 UTC

PDFKit Fork() Function Unimplemented Error - HELP!

Hello All,

We''re working on a project on a Windows machine that will use PDFKit to
convert an HTML page to a PDF. I have followed all the instructions at
GitHub (http://github.com/jdpace/PDFKit), for installing wkhtmltopdf and
PDFKit, then creating the config file in
''config/initializers/pdfkit.rb''
and then finally, setting up Middleware for Rails apps in
''config/environment.rb''. We have done all of the following and
when we
run the server and append the ''.pdf'' extension, we receive a
500
Internal Server Error. Upon inspection of the console, we find a fork()
function unimplemented error. The console output is listed below:
---------------
/!\ FAILSAFE /!\  Tue Aug 03 08:28:19 -0700 2010
  Status: 500 Internal Server Error
  fork() function is unimplemented on this machine
    C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/pdfkit.rb:60:in
`open''
    C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/pdfkit.rb:60:in
`to_pdf''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/middleware.rb:23:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/string_coercion.rb:25:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/head.rb:9:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/methodoverride.rb:24:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/params_parser.rb:15:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/session/cookie_store.rb:99:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/failsafe.rb:26:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
`synchronize''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:114:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/reloader.rb:34:in
`run''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:108:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/static.rb:31:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:47:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
`each''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/log_tailer.rb:17:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/content_length.rb:13:in
`call''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/chunked.rb:15:in
`call''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:67:in
`process''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:159:in
`process_client''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:158:in
`each''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:158:in
`process_client''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:285:in
`run''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:285:in
`initialize''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:285:in
`new''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:285:in
`run''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:268:in
`initialize''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:268:in
`new''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:268:in
`run''
   
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:38:in
`run''
    C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:111
    C:/Ruby186/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require''
    C:/Ruby186/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require''
    ./script/server:3
    -e:2:in `load''
    -e:2
--------
If anyone could help us get around this problem to be able to convert an
HTML page to pdf, we would greatly appreciate it.

Thanks in advance,
-dwmcc
-- 
Posted via http://www.ruby-forum.com/.

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Frederick Cheung

2010-Aug-04 06:53 UTC

head link

Re: PDFKit Fork() Function Unimplemented Error - HELP!

On Aug 3, 6:43 pm, Dylan Mccarthy
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org>
wrote:> Hello All,
>
> We''re working on a project on a Windows machine that will use
PDFKit to
> convert an HTML page to a PDF. I have followed all the instructions at
> GitHub (http://github.com/jdpace/PDFKit), for installing wkhtmltopdf and
> PDFKit, then creating the config file in
''config/initializers/pdfkit.rb''
> and then finally, setting up Middleware for Rails apps in
> ''config/environment.rb''. We have done all of the
following and when we
> run the server and append the ''.pdf'' extension, we
receive a 500
> Internal Server Error. Upon inspection of the console, we find a fork()
> function unimplemented error. The console output is listed below:
Ruby on windows doesn''t have fork. You might try rewriting the bit
that uses kernel.open to use IO.popen instead

Fred
> ---------------
> /!\ FAILSAFE /!\  Tue Aug 03 08:28:19 -0700 2010
>   Status: 500 Internal Server Error
>   fork() function is unimplemented on this machine
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/pdfkit.rb:60:in
> `open''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/pdfkit.rb:60:in
> `to_pdf''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/pdfkit-0.4.3/lib/pdfkit/middleware.rb:23: in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/st
ring_coercion.rb:25:in
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/head.rb:9:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/methodoverride.rb:24: in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/pa
rams_parser.rb:15:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/se
ssion/cookie_store.rb:99:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/fa
ilsafe.rb:26:in
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
> `synchronize''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/di
spatcher.rb:114:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/re
loader.rb:34:in
> `run''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/di
spatcher.rb:108:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/static.rb:31:i n
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:47:in
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
> `each''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/urlmap.rb:41:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/rails/rack/log_tailer.rb:
17:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/content_length.rb:13: in
> `call''
>     C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/chunked.rb:15:in
> `call''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:67 :in
> `process''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
159:in
> `process_client''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
158:in
> `each''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
158:in
> `process_client''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
285:in
> `run''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
285:in
> `initialize''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
285:in
> `new''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
285:in
> `run''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
268:in
> `initialize''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
268:in
> `new''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/lib/mongrel.rb:
268:in
> `run''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb:38 :in
> `run''
>    
C:/Ruby186/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:111
>     C:/Ruby186/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
> `gem_original_require''
>     C:/Ruby186/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
> `require''
>     ./script/server:3
>     -e:2:in `load''
>     -e:2
> --------
> If anyone could help us get around this problem to be able to convert an
> HTML page to pdf, we would greatly appreciate it.
>
> Thanks in advance,
> -dwmcc
> --
> Posted viahttp://www.ruby-forum.com/.
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Dylan Mccarthy

2010-Aug-04 14:54 UTC

head link

Re: PDFKit Fork() Function Unimplemented Error - HELP!

Frederick Cheung wrote:> On Aug 3, 6:43�pm, Dylan Mccarthy
<li...-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
>> function unimplemented error. The console output is listed below:
> Ruby on windows doesn''t have fork. You might try rewriting the bit
> that uses kernel.open to use IO.popen instead
> 
> Fred
Great. What file would I edit to do this?


Thanks,
dwmcc
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