From: Damjan Rems <d_rems@...>
Date: 2008-03-04T06:17:11+09:00
Subject: Re: Understanding ruby classes


At the end of a day I have this solution.

I have myreport001.rb which contains:

class Myreport001 < MyPrint
   def printHDR
     image 'image.jpg' 20, 1
     print 'some header text' 1,5
     ...
   end
   def doJob
     print 'some text' 1,5
   end
 end

def myReport(myCustomClass, opts={})
># source filename
  cFileName = myCustomClass + '.rb'
># read the source file
  src = File.open(cFileName) {|f| f.read}
># Replaces 'MyPrint' with MyPrint2PDF
  src.sub!('MyPrint','MyPrint2' + opts[:format])
># evaluates sorce
  eval src
># creates new class
  eval myCustomClass.capitalize + '.new'
end

r = myReport('myreport001',:format => 'PDF')
r.doReport

It works. It probably has some kind of memory leak, but it works. And it 
is wery Rail-ish with template source file doing actualy job. And I 
belive it will be also very custumizeable.

--
I am kind of puzzeled by the fact that this doesn't work.
  src.split("\n").each do |line|
    x+=1
    eval(line)
  end

myreport001.rb:2:in `myReport': compile error (SyntaxError)
myreport001.rb:2: syntax error, unexpected $end, expecting '\n' or ';'
class Myreport001 < MyPrint2PDF
                                ^       from testsrc.rb:167:in `eval'
        from testsrc.rb:170:in `myReport'
        from testsrc.rb:167:in `each'
        from testsrc.rb:167:in `myReport'
        from testsrc.rb:174

Line 170 is: eval(line)


Any ideas. And I am still open to any other suggestions.

by
TheR
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