Re: A friendly hello and some newbie questions

Hrm, very strange.  I don't see anything in particular wrong with that
second script.  In fact, I copied it and pasted and I don't get any
null pointer errors on my system.  You said that this script works
fine outside of apache?

Below is my apache config:

LoadModule ruby_module /usr/lib/httpd/modules/mod_ruby.so

<IfModule mod_ruby.c>
  RubyRequire apache/ruby-run

  # Excucute files under /ruby as Ruby scripts
  <Location /ruby>
   SetHandler ruby-object
   RubyHandler Apache::RubyRun.instance
  </Location> 
 
  # Execute *.rbx files as Ruby scripts
  <Files *.rbx>
   SetHandler ruby-object
   RubyHandler Apache::RubyRun.instance
  </Files>
</IfModule>

<IfModule mod_ruby.c>
  RubyRequire apache/eruby-run

  # Handle files under /eruby as eRuby files
  <Location /eruby>
   SetHandler ruby-object
   RubyHandler Apache::ERubyRun.instance
  </Location>
   
  # Handle *.rhtml files as eRuby files
  <Files *.rhtml>
   SetHandler ruby-object
   RubyHandler Apache::ERubyRun.instance
  </Files>
</IfModule>




On Thu, 18 Nov 2004 15:43:45 +0100, flim <[email protected]> wrote:
> Hello list,
> let me throw in a friendly hello first - I'm new to the list and new to ruby
> in general as well.
> 
> I've come across ruby some days ago in a newspaper article and wanted to give
> it a try, mainly because I need something to play with that's different from
> what I'm normally doing. After reading through some articles I got fascinated
> from some of the concepts and am currently trying to rewrite some smaller web
> projects to get used to it.
> 
> I didn't make it past the planning though because I encountered some problems.
> I've looked through the web for results, but I couldn't find anything related
> and don't know where to extend my search to. So, in case of my problem being
> covered somewhere or there being a good page on mod_ruby/eruby I would really
> be happy if you could point me to it.
> 
> Now, my problem: I got some strange error from embedded eruby: "in:
> `each_hash': NULL pointer given (ArgumentError)" that doesn't occur when
> doing
> 'eruby scriptname.rhtml' on the command line.
> 
> I installed latest mod_ruby/eruby version on apache2, mandrake linux 10. I
> also installed latest ruby mysql version. The basic installation has been
> tested with the following script and it worked fine:
> <%
> require "mysql"
> #~-----------------------------------------------------------------------------
> m = Mysql.new("localhost", "user", "pass");
> m.select_db("test");
> result = m.query("SELECT * FROM words");
> result.each do |array|
>     array.each do |value|
>         puts value
>     end
>     puts
> end
> m.close
> #~-----------------------------------------------------------------------------
> %>
> 
> Then I wrote another simple script(better, copied it from
> http://www.rubywizard.net/ruby-mysql.html)
> 
> <%
> require "mysql"
> #~-----------------------------------------------------------------------------
> m = Mysql.new("localhost", "user", "pass");
> m.select_db("test");
> result = m.query("SELECT * FROM words");
> result.each_hash {|hash|
>         printf("%s %s %s<br>", hash['english'], hash['german'], hash['french'])
> }
> m.close
> #~-----------------------------------------------------------------------------
> %>
> 
> This one throws above error. Let me post that error again in more details:
> 
> [Thu Nov 18 13:56:28 2004] [notice] Apache-AdvancedExtranetServer/2.0.48
> (Mandrake Linux/6.6.100mdk) PHP/4.3.9 mod_ruby/1.0.7 Ruby/1.8.0
> mod_ssl/2.0.48 OpenSSL/0.9.7c DAV/2 configured -- resuming normal operations
> [Thu Nov 18 13:56:34 2004] [error] mod_ruby: error in ruby
> /tmp/test.ruby.23657.0:10:in `each_hash': NULL pointer given (ArgumentError)
>         from /tmp/test.ruby.23657.0:10
>         from /usr/lib/ruby/1.8/apache/eruby-run.rb:113:in `load'
>         from /usr/lib/ruby/1.8/apache/eruby-run.rb:113:in `run'
>         from /usr/lib/ruby/1.8/apache/eruby-run.rb:78:in `handler'
> 
> As the script works from outside apache I believe in some configuration issue.
> The apache config file looks good though and I cannot imagine what to change
> in order to get script2 working same as script1. In any case, here's the
> config file:
> 
> LoadModule ruby_module /usr/lib/apache2-extramodules/mod_ruby.so
> <IfModule mod_ruby.c>
>   RubyRequire apache/ruby-run
> 
>   <Location /ruby>
>     SetHandler ruby-object
>     RubyHandler Apache::RubyRun.instance
>     Options ExecCGI
>   </Location>
> 
>   <Files *.rbx>
>     SetHandler ruby-object
>     RubyHandler Apache::RubyRun.instance
>     Options ExecCGI
>   </Files>
> 
>  RubyRequire apache/eruby-run
>  <Location /eruby>
>    SetHandler ruby-object
>    RubyHandler Apache::ERubyRun.instance
>  </Location>
>    <Files *.ruby>
>      SetHandler ruby-object
>      RubyHandler Apache::ERubyRun.instance
>    </Files>
>    <Files *.rhtml>
>      SetHandler ruby-object
>      RubyHandler Apache::ERubyRun.instance
>    </Files>
> </IfModule>
> 
> Now, I could be completley wrong about asking you because it being a mysql
> problem only (it just doesn't look like that and I've to start somewhere:-))
> - in that case let me say sorry in advance.
> 
> Best regards,
> Thomas
> 
>