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I have a project that I am working on and I do not know much about Rails or Ruby.
I need to generate an XML file from user input. Can some direct me to any resource that can show me how to do this pretty quickly and easily?
798
Microsoft XML Notepad is an application that allows you to create and edit XML documents quickly and easily. With this tool, the structure of your XML data is displayed graphically in a tree structure. The interface presents two panes: one for the structure, and one for the values.
Click File > Save As, and select the location where you want to save the file. , point to the arrow next to Save As, and then click Other Formats. In the File name box, type a name for the XML data file. In the Save as type list, click XML Data, and click Save.
You can create a blank XML document from scratch. This document only contains a single root element ( <ROOT> ). Open the New XML dialog (File > New > XML). In the Other XML tab, select Empty XML and click OK.
The Nokogiri gem has a nice interface for creating XML from scratch. It's powerful while still easy to use. It's my preference:
require 'nokogiri'
builder = Nokogiri::XML::Builder.new do |xml|
xml.root {
xml.products {
xml.widget {
xml.id_ "10"
xml.name "Awesome widget"
}
}
}
end
puts builder.to_xml
Will output:
<?xml version="1.0"?>
<root>
<products>
<widget>
<id>10</id>
<name>Awesome widget</name>
</widget>
</products>
</root>
Also, Ox does this too. Here's a sample from the documenation:
require 'ox'
doc = Ox::Document.new(:version => '1.0')
top = Ox::Element.new('top')
top[:name] = 'sample'
doc << top
mid = Ox::Element.new('middle')
mid[:name] = 'second'
top << mid
bot = Ox::Element.new('bottom')
bot[:name] = 'third'
mid << bot
xml = Ox.dump(doc)
# xml =
# <top name="sample">
# <middle name="second">
# <bottom name="third"/>
# </middle>
# </top>
Nokogiri is a wrapper around libxml2.
Gemfile gem 'nokogiri' To generate xml simple use the Nokogiri XML Builder like this
xml = Nokogiri::XML::Builder.new { |xml|
xml.body do
xml.node1 "some string"
xml.node2 123
xml.node3 do
xml.node3_1 "another string"
end
xml.node4 "with attributes", :attribute => "some attribute"
xml.selfclosing
end
}.to_xml
The result will look like
<?xml version="1.0"?>
<body>
<node1>some string</node1>
<node2>123</node2>
<node3>
<node3_1>another string</node3_1>
</node3>
<node4 attribute="some attribute">with attributes</node4>
<selfclosing/>
</body>
Source: http://www.jakobbeyer.de/xml-with-nokogiri
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