man HTML::Template () - Ruby extension for HTML::Template
NAME
HTML::Template - Ruby extension for HTML::Template
DESCRIPTION
This module deals with HTML template by CGI scripts and use a complete selectivity between design and logic easily. You can deal with a nested block, a loop and a conditional expression. Simple example, see below.
template file test.html
<HTML> <HEAD><TITLE>Test Template</TITLE> <BODY> My Home Directory is <!var:home> <P> My Path is set to <!var:path> </BODY> </HTML>Ruby script
require "html/template"
tmpl = HTML::Template.new("./test.html")
tmpl.param({
'home' => ENV['HOME'],
'path' => ENV['PATH']
})
print "Content-Type: text/html\n\n"
print tmpl.output
INSTALL
using install.rb
% tar xvzf html-template-x.xx.tar.gz % cd html-template-x.xx % ruby install.rb config % ruby install.rb setup % su # ruby install.rb install
Template File
TAGS
You can use original style tag or valid HTML comment style tag.
- <!var:PARAMETER_NAME>
- <!-- var:PARAMETER_NAME --> When you call HTML::Template#param ({PARAMETER_NAME => VAL}), tags will be simply replaced to VAL.
- <!begin:PARAMETER_NAME>
- <!end:PARAMETER_NAME>
- <!-- begin:PARAMETER_NAME -->
- <!-- end:PARAMETER_NAME --> It allows you to separate a section of text and give it a name It would be able to make them loop or conditional expression. And, it can be nested.
- <!include:FILE_NAME>
- <!-- include:FILE_NAME --> A file specified by FILE_NAME is simply inserted to a template file. The template file will be treated as a merged template. If you pass the path param to HTML::Template.new , include file will be searched under the path.
HTML::Template CLASS
CLASS METHODS
- HTML::Template.new(params = {}) Creates a HTML::Template object. Given a file name to its first argument, use this file as a template.
Also you can pass params as Hash. The options are below
- • filename template filename
- • path template search path. you can specified as String or Array of String.
METHODS
- HTML::Template#load(file) Load template file.
- HTML::Template#set_html(html) Setting up a string as a template.
- HTML::Template#param(hash = {})
- HTML::Template#expand(hash = {}) Specifies a string or a loop by Hash for a substitute. When specifying more than a loop simultaneously, value of the hash becomes an array.
- HTML::Template#node(n)
- HTML::Template#loop(n)
- HTML::Template#cond(n) Stands a loop and a conditional expression specified by <!begin:name><!end:name> Retrieves HTML::TemplateNode object.
- HTML::Template#output
- HTML::Template#to_s Returns the final result.
HTML::TemplateNode CLASS
This is a class for a loop or a conditional expression. An instance consists of HTML::Template Class and HTML::TemplateNode CLASS.
METHODS
- HTML::TemplateNode#node(n) Stands a loop or a conditional expression specified by <!begin:name><!end:name> Returns HTML::TemplateNode object. Is only used for nested.
- HTML::TemplateNode#param(hash = {})
- HTML::TemplateNode#expand(hash = {})
- HTML::TemplateNode#add(hash = {}) Specifies a string or a loop by Hash for a substitute. If you don't call the method, the block won't be displayed.
A LOOP
This sample is a displaying list of environment valiables.
<html>
<body>
<h1>Env List</h1>
<hr>
<!begin:envlist>
<!var:key> : <!var:val><br>
<!end:envlist>
<hr>
</body>
</html>
# In case of using it with iterator and replace data.
require "html/template"
tmpl = HTML::Template.new("filename" => "envlist.html")
ENV.keys.sort.each do |k|
tmpl.node("envlist").param({'key' => k,
'val' => ENV[k]
})
end
print "Content-Type: text/html\n\n"
print tmpl.output
# In case of giving a loop as an array
require "html/template"
tmpl = HTML::Template.new("envlist.html")
envlist = []
ENV.keys.sort.each do |k|
envlist.push({'key' => k,
'val' => ENV[k]
})
end
tmpl.param({'envlist' => envlist})
print "Content-Type: text/html\n\n"
print tmpl.output
A Conditional Expression
<html>
<body>
<!begin:true>
This is True
<!var:foo>
<hr>
<!end:true>
<!begin:false>
This is False
<!var:foo>
<hr>
<!end:false>
</body>
</html>
require "html/template"
tmpl = HTML::Template.new("cond.html")
tmpl.param({'true' => {'foo' => 'foobar'}
})
print "Content-Type: text/html\n\n"
print tmpl.output
The performed result is below, however, a part not specied with the method isn't displayed.
<html> <body> This is True foobar <hr> </body> </html>
An attached Sample.
- env.rb This sample is a simply replacing valiables.
- envlist.rb This sample is a displaying list of environment valiables. This sample is a case for using with iterator.
- envlist2.rb Performed result is the same as the envlist.rb.'s.
- nest.rb A sample of a nested loop.
THANKS
English Documentation NAKAYAMA Nao <nao_o@netlaputa.ne.jp> thanks a lot :-)
AUTHOR
Copyright 2001 IKEBE Tomohiro This library is free software; you can redistribute it and / or modify it under the same terms as Ruby itself. IKEBE Tomohiro <ikechin@Oxfa.com>