is there anybody who knows how we can get child values using libxml
(Reader class)
def xml_import_to_brands
require'xml'
reader = XML::Reader.file('c:/brands.xml')
.
.
.
Quoting lecielbleu <canali83@gmail.com>:
is there anybody who knows how we can get child values using libxml
(Reader class)def xml_import_to_brands
require'xml'
reader = XML::Reader.file('c:/brands.xml')
.
For docs, go to http://libxml.rubyforge.org/rdoc/index.html, scroll down in
middle, left windows to LibXML::XML::Reader.
Something along the lines of:
require 'xml'
stack = []
while reader
case reader.node_type
when XML::Reader::TYPE_ELEMENT
# opening tag
stack << reader.name
stack.pop if reader.empty_element?
when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
path = stack.join('/')
case path
when 'root/parent/child'
puts reader.value # simple content
when 'root/parent/complex_content'
puts reader.read_inner_xml # contents including markup
when XML::Reader::TYPE_END_ELEMENT
# closing tag
stack.pop
end
end
HTH,
Jeffrey
i tried this an get an error =
NoMemoryError
failed to allocate memory
error line number 30 = stack << reader.name
Have not seen this error before. Please show more of your code.
Jeffrey
Quoting lecielbleu <canali83@gmail.com>:
my xml data seems like that : <Brands><Brand><Brand_id>2</
Brand_id><Brand_name>HP</Brand_name></Brand>
and here is my codes
def xml_testing
require'xml'
reader = XML::Reader.file('c:/brands.xml')
stack = []
while reader
case reader.node_type
when XML::Reader::TYPE_ELEMENT
# opening tag
stack << reader.name
stack.pop if reader.empty_element?
when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
path = stack.join('/')
case path
when 'Brands/Brand/Brand_name'
puts reader.value # simple content
when XML::Reader::TYPE_END_ELEMENT
# closing tag
stack.pop
end
end
end
flash.now[:message]="brands read"
end
Note : i add one more "end" cause it was saying unexpected end
There are no <xml> header tags. I have no idea how libXML will behave. It
isn't very tolerant of invalid input. Try adding the puts statements I've
inserted below to find out how far it is getting.
Quoting lecielbleu <canali83@gmail.com>:
my xml data seems like that : <Brands><Brand><Brand_id>2</
Brand_id><Brand_name>HP</Brand_name></Brand>
and here is my codesdef xml_testing
require'xml'
reader = XML::Reader.file('c:/brands.xml')stack = []
while reader
case reader.node_type
when XML::Reader::TYPE_ELEMENT
# opening tag
stack << reader.name
puts "BEGIN #{stack.join('/')}"
stack.pop if reader.empty_element?
puts "END #{stack.join('/')}" if reader.empty_element?
when XML::Reader::TYPE_TEXT, XML::Reader::TYPE_CDATA
path = stack.join('/')
case path
when 'Brands/Brand/Brand_name'
puts reader.value # simple content
when XML::Reader::TYPE_END_ELEMENT
# closing tag
puts "END #{stack.join('/')}"
i guess problem is while reader line because when i run basic code
below :
while doc == true
puts reader.read_string
end
strings never stops in the command line , it turns infinite loop.
i tried also
while doc == true
while doc = 1
while doc
results dont change....
I'm afraid I don't understand what you are trying to do here. 'doc' isn't in
the example below. So how the loop would change its value, I am unclear. It
seems like you are saying a loop with an unchanging condition runs forever.
Yes, it does.
Did you intend to do this:
while reader.read
puts reader.read_string
end
HTH
Jeff
Quoting lecielbleu <canali83@gmail.com>:
ok Jeff i solved problem , using "doc" was a bad mistake 
thanks for
your support ,here is the last codes
while reader.read
case reader.name
when "Brand_name"
name_from_xml = reader.read_string
Brand.create( :name => name_from_xml )
end
end
