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require 'erb' | |
data = { :version => RUBY_PLATFORM } | |
class Hash | |
def method_missing(method,*args) | |
if (keys.include?(method) && args.empty?) | |
self[method] | |
else | |
super | |
end | |
end | |
end | |
x = 42 | |
template = ERB.new <<-EOF | |
The value of x is: <%= version %> | |
EOF | |
puts template.result(data.send(:binding)) |
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~$ irb | |
irb(main):001:0> require 'erb' | |
=> true | |
irb(main):002:0> data = { :version => RUBY_PLATFORM } | |
=> {:version=>"i686-darwin10.0.0"} | |
irb(main):003:0> class Hash | |
irb(main):004:1> def method_missing(method,*args) | |
irb(main):005:2> if (keys.include?(method) && args.empty?) | |
irb(main):006:3> self[method] | |
irb(main):007:3> else | |
irb(main):008:3* super | |
irb(main):009:3> end | |
irb(main):010:2> end | |
irb(main):011:1> end | |
=> nil | |
irb(main):012:0> x = 42 | |
=> 42 | |
irb(main):013:0> template = ERB.new <<-EOF | |
irb(main):014:0" The value of x is: <%= version %> | |
irb(main):015:0" EOF | |
=> #<ERB:0x101689b90 @filename=nil, @src="_erbout = ''; _erbout.concat \"The value of x is: \"; _erbout.concat(( version ).to_s); _erbout.concat \"\\n\"\n; _erbout", @safe_level=nil> | |
irb(main):016:0> puts template.result(data.send(:binding)) | |
The value of x is: i686-darwin10.0.0 | |
=> nil |
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irb(main):001:0> require 'erb' | |
=> true | |
irb(main):002:0> data = { :version => RUBY_PLATFORM } | |
=> {:version=>"i386-mswin32"} | |
irb(main):003:0> class Hash | |
irb(main):004:1> def method_missing(method,*args) | |
irb(main):005:2> if (keys.include?(method) && args.empty?) | |
irb(main):006:3> self[method] | |
irb(main):007:3> else | |
irb(main):008:3* super | |
irb(main):009:3> end | |
irb(main):010:2> end | |
irb(main):011:1> end | |
=> nil | |
irb(main):012:0> x = 42 | |
=> 42 | |
irb(main):013:0> template = ERB.new <<-EOF | |
irb(main):014:0" The value of x is: <%= version %> | |
irb(main):015:0" EOF | |
=> #<ERB:0x37a2bc0 @safe_level=nil, @src="_erbout = ''; _erbout.concat \"The value of x is: \"; _erbout.concat(( version | |
).to_s); _erbout.concat \"\\n\"\n_erbout", @filename=nil> | |
irb(main):016:0> puts template.result(data.send(:binding)) | |
The value of x is: i386-mswin32 | |
=> nil |
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# more work on this - now I'm able to rely on Hash-based data in ERB | |
require 'erb' | |
require 'ostruct' | |
class OpenStruct | |
# monkey patch to ensure we'll get the right bindings | |
# required only on IronRuby/JRuby | |
def get_our_own_binding | |
binding | |
end | |
end | |
class Templator | |
def self.render(template,values) | |
template = ERB.new(template) | |
context = OpenStruct.new(values) | |
template.result(context.get_our_own_binding) | |
end | |
end | |
template = <<-EOF | |
The value of x is: <%= version %> | |
EOF | |
puts Templator.render(template, { :version => RUBY_PLATFORM }) |
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