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require 'tilt/template'
module Tilt
# CSV Template implementation. See:
# http://ruby-doc.org/stdlib/libdoc/csv/rdoc/CSV.html
#
# == Example
#
# # Example of csv template
# tpl = <<-EOS
# # header
# csv << ['NAME', 'ID']
#
# # data rows
# @people.each do |person|
# csv << [person[:name], person[:id]]
# end
# EOS
#
# @people = [
# {:name => "Joshua Peek", :id => 1},
# {:name => "Ryan Tomayko", :id => 2},
# {:name => "Simone Carletti", :id => 3}
# ]
#
# template = Tilt::CSVTemplate.new { tpl }
# template.render(self)
#
class CSVTemplate < Template
self.default_mime_type = 'text/csv'
def self.engine_initialized?
engine
end
def self.engine
if RUBY_VERSION >= '1.9.0' && defined? ::CSV
::CSV
elsif defined? ::FasterCSV
::FasterCSV
end
end
def initialize_engine
if RUBY_VERSION >= '1.9.0'
require_template_library 'csv'
else
require_template_library 'fastercsv'
end
end
def prepare
@code =<<-RUBY
#{self.class.engine}.generate do |csv|
#{data}
end
RUBY
end
def precompiled_template(locals)
@code
end
def precompiled(locals)
source, offset = super
[source, offset + 1]
end
end
end
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