require 'erb'
# GOAL: render the template with the following vars
vars = { :first => 'Mislav', 'last' => 'Marohnic' }
template = 'Name: <%= first %> <%= last %>'
# create anonymous module which binding we will use
m = Module.new do
# I want the singleton class, thank you
class << self
public :binding
def meta
class << self; self; end
end
end
class << meta
public :define_method
end
# define singleton method for each var
vars.each do |name, value|
meta.define_method(name) { value }
end
end
puts ERB.new(template).result(m.binding)
#=> "Name: Mislav Marohnic"
Refactorings
No refactoring yet !
lifo
April 12, 2008, April 12, 2008 15:38, permalink
2 ratings.
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Dont make me do these things again :-(
require 'erb' require 'ostruct' vars = OpenStruct.new :first => 'Mislav', 'last' => 'Marohnic' template = 'Name: <%= first %> <%= last %>' puts ERB.new(template).result(vars.send(:binding))
Nathan Weizenbaum
April 12, 2008, April 12, 2008 17:08, permalink
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require 'rubygems'
require 'erubis'
vars = { :first => 'Mislav', 'last' => 'Marohnic' }
template = 'Name: <%= first %> <%= last %>'
Erubis::Eruby.new(template).result(vars)
Sam Stephenson
April 12, 2008, April 12, 2008 17:34, permalink
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require "erb"
class Hash
def to_binding(object = Object.new)
object.instance_eval("def binding_for(#{keys.join(",")}) binding end")
object.binding_for(*values)
end
end
class Document
def initialize(template)
@template = ERB.new(template)
end
def interpolate(replacements = {})
@template.result(replacements.to_binding)
end
end
puts Document.new("Name: <%= first %> <%= last %>").interpolate(:first => "Mislav", "last" => "Marohnic")
# Name: Mislav Marohnic
Alyn
November 24, 2011, November 24, 2011 03:31, permalink
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So that's the case? Quite a reveltaoin that is.
ERROR_BAD_DUPLICATES
This works. Now, is there a simpler way than my solution?