Rexml - please help

Rails
1

Hi ppl,

I’m new to this forum and also to ruby. My question is I have a rails
project and i want to load some data from an xml file and to write it.

for that i have wrote a
1 model (Oxml)
2 controller (XmlTestController)

my code is as follows,

---------------- model -----------------------------

require ‘rexml/document’
class Oxml
def read_xml()
xml = REXML::Document.new(File.open(’/images/guitars.xml’))
end
end

------------- controller ---------------------------

class XmlTestController < ApplicationController
def index
@oxm = Oxml.new
@oxm.read_xml
end
end

and i’m getting this error,

Errno::ENOENT in Xml testController#index

No such file or directory - /images/guitars.xml

can somebody tell a solution for this. And if i’m wrong pls tell me how
to correct the code.

any help would be really appriciated… and thankx in advance

cheers
sameera

2

The file name that you try to open is not a valid one, as the error
describe to you.
You should give a valid path to the desired file.
Since it is a Rails application you should build the path in this
fashion:

class Oxml
def read_xml()
xml = REXML::Document.new(File.open(“#{RAILS_ROOT}/images/
guitars.xml”))
end
end

On Dec 11, 1:46 pm, Sameera G. [email protected]

3

and by the way, if you want to parse XML, then hpricot may be worth a
try:
http://code.whytheluckystiff.net/hpricot/

4

Hpricot is, from my experience, much faster for reading, querying and
manipulating xml files.
You definitely should give it a try.

On Dec 11, 3:49 pm, Thorsten M. <rails-mailing-l…@andreas-

5

Hi Guys,

thank you for both Dejan and Thorsten

I’ll give a try and see. Thankx again for the help

cheers
sameera

6

Try:

xml_file = File.join(RAILS_ROOT,‘images/guitars.xml’)
File.open(xml_file)

(There’s no actual need for the temp variable, I just thought it
looked clearer)

‘/images/guitars.xml’ tells file open to look in ‘/images’ (as in,
anchored to the root directory for the system) for guitars.xml.
File.join( ) makes a full path out of the arguments you give it.
RAILS_ROOT is a constant set by rails as the root directory of the
project.

Regards
jon