Rails - May 2006 - Display XML file, with some formatting.

Hi.

Im quite new to this Rails thing, but it seems like a good product so 
why not try it out whit a little prototype i need to build.

What i want is to load any given XML file, and display it with some 
formatting.
I have some XSD shemes to validate the XML files against, but its not 
vital rigth now.
But how should i approach this task?

At first it would proberly be a good idea to load the file into my rails 
app. My guess is that i could use something like

file = File.new( "mydoc.xml" )
doc = REXML::Document.new file
require "rexml/document"

But is there a way that i (at first) just can go trough the entire XML 
tree and display it (something like when jo open af XML file in IE/FF)?

And perhaps someone can point me to a place i can read about XML-file 
manipulating with Rails.

Best Regards:
Lasse Thomsen

-- 
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Lasse Thomsen wrote:
> file = File.new( "mydoc.xml" )
> doc = REXML::Document.new file
> require "rexml/document"
> 
That looks a bit backwards.

I believe the last two lines whould be swapped:

file = File.new( "mydoc.xml" )
require "rexml/document"
doc = REXML::Document.new file
doc.write($stdout,0) #=> writes the XML on STDOUT with indenting to show 
structure

If you specify -1 (instead of 0) it doesn''t do any indenting
See 
http://ruby-doc.org/stdlib/libdoc/rexml/rdoc/classes/REXML/Document.html#M000466

cheers
Chris

-- 
Posted via http://www.ruby-forum.com/.

> I believe the last two lines whould be swapped:
> 
> file = File.new( "mydoc.xml" )
> require "rexml/document"
> doc = REXML::Document.new file
> doc.write($stdout,0) #=> writes the XML on STDOUT with indenting to show
> structure
> 
> If you specify -1 (instead of 0) it doesn''t do any indenting
> See 
>
http://ruby-doc.org/stdlib/libdoc/rexml/rdoc/classes/REXML/Document.html#M000466
> 
> cheers
> Chris
Thanks for help, where should i place the file so that my rails web 
application can see it? perhaps in the pulic folder ? and then just make 
a dir called xml, throw my xml file in there?

And read the file like: file = File.new("/xml/mydoc.xml") ?

Because i have just tried this and got the following error:
No such file or directory - /xml/mydoc.xml

Or is there some where i should edit to tell where my webroot is?

Best Regards:
Lasse Stig Thomsen

-- 
Posted via http://www.ruby-forum.com/.

> Thanks for help, where should i place the file so that my rails web 
> application can see it? perhaps in the pulic folder ? and then just make 
> a dir called xml, throw my xml file in there?
> 
> And read the file like: file = File.new("/xml/mydoc.xml") ?
> 
> Because i have just tried this and got the following error:
> No such file or directory - /xml/mydoc.xml
> 
> Or is there some where i should edit to tell where my webroot is?
> 
> Best Regards:
> Lasse Stig Thomsen
Did some more diging, realised that the rails root is relative to from
where i start the webrick server.

-- 
Posted via http://www.ruby-forum.com/.

All my output i going to the ruby console instead of the browser.
If i do some render_text around the doc.write($stdout,0) the browser 
shows the XML file in one line with no indentation.

But in the ruby console there is still the correct display?

How do i direct the stdout to the browser?

-- 
Posted via http://www.ruby-forum.com/.

Lasse Thomsen wrote:
> All my output i going to the ruby console instead of the browser.
> If i do some render_text around the doc.write($stdout,0) the browser 
> shows the XML file in one line with no indentation.
> 
> But in the ruby console there is still the correct display?
> 
> How do i direct the stdout to the browser?
Not anyone who can help me read an xml file and display the content in 
the browser? the stdout solutiuon seems to be a dead end.

-- 
Posted via http://www.ruby-forum.com/.

> 
> Lasse Thomsen wrote:
> Not anyone who can help me read an xml file and display the content in 
> the browser? the stdout solutiuon seems to be a dead end.
> 

You should apply an xsl to it I think:

put this in your controller:

require ''xml/xslt''

 def show_xml
    xslt = XML::XSLT.new()
    xslt.xsl = File.open(''path/to/xslfile.xsl'',
''r'').read
    xslt.xml = File.open(''path/to/xmlfile.xml'',
''r'').read
    render_text xslt.serve()
  end

and call <%= render_component :action => ''show_text''
%> in your view.

You may have to install the xml/xsl gem (I forget)

HTH,
Michel

Lasse Thomsen <lassethomsen@...> writes:

Michel Benevento wrote:
> 
> You should apply an xsl to it I think:
> 
> put this in your controller:
> 
> require ''xml/xslt''
> 
>  def show_xml
>     xslt = XML::XSLT.new()
>     xslt.xsl = File.open(''path/to/xslfile.xsl'',
''r'').read
>     xslt.xml = File.open(''path/to/xmlfile.xml'',
''r'').read
>     render_text xslt.serve()
>   end
> 
> and call <%= render_component :action =>
''show_text'' %> in your view.
> 
> You may have to install the xml/xsl gem (I forget)
Thanks, this is just what i have been looking for. Atleast it looks like 
the way i would want to go. Tomorrow i will create til XSL files for my 
XML. And later look into how i should validate them against som XSD 
schema''s i have. If anyone has hints in validating agains XSD files i 
would be nice to hear, but at first im gonna make the displaying work. 
Maybe ill start get more hang on RoR when i get this working. (you learn 
a little everyday, and im working on the "Depot" webshop from the
agile
web dev with rails book, so i hope to catch it all up quick)

-- 
Posted via http://www.ruby-forum.com/.

Hi Michel,

Michel Benevento wrote:
> You may have to install the xml/xsl gem (I forget)
Where can I get more info on this gem?  I really need something like this. 
I checked and it''s not included in the standard distro of Instant Rails
I''m
using.

Thanks,
Bill

> 
> > You may have to install the xml/xsl gem (I forget)
> 
> Where can I get more info on this gem?  I really need something like this. 
> I checked and it''s not included in the standard distro of Instant
Rails I''m
> using.

http://raa.ruby-lang.org/project/ruby-xslt/

Looks like you''ll have to install this by hand...

Hi sir,


      I have one doubt i am doing one ror project , image upload process 
, I did image upload and save the dir(public/images ) i can retrive the 
image and display the browser , pls guide me

Thanks
john

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Hi,

     Some ides to check:
     - Check that the image is physically move the directory 
app/public/image
     - Check the security permissions of the folder... maybe name image 
can''t be access to the user running the web server.
     - Check the size if it''s zero... there can be size limit or
problem
in the passenger / web service (typical webrick vs ngnix)
     - Does it fail only in production or also in development? Maybe 
some different configurations?
     - The source in the image while printing... "<img 
src="/images/imageName.extension">

     I hope will help you,

El 11/08/2011 12:40, john paul escribió:
> Hi sir,
>
>
>        I have one doubt i am doing one ror project , image upload process
> , I did image upload and save the dir(public/images ) i can retrive the
> image and display the browser , pls guide me
>
> Thanks
> john
>
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