Yeah, that seems like it was the problem. I fixed it by defining the getter method directly in the object I was running the ERB file in.
require "erb" def eval_field(field) field.each do |key, value| class << self; self; end.class_eval do define_method(key) { @field[key] } end end @field = field binding end ERB.new("<%= foo %>").result(eval_field({:foo => "bar"}) I find it odd that OpenStruct won't work, despite this code almost being almost identical to that of OpenStruct. From: ironruby-core-boun...@rubyforge.org [mailto:ironruby-core-boun...@rubyforge.org] On Behalf Of Orion Edwards Sent: Tuesday, June 19, 2012 4:20 PM To: ironruby-core@rubyforge.org Subject: Re: [Ironruby-core] Problem with using OpenStruct and ERB Ahh I see. I don't have a copy of 1.8.6 handy to test on, but this definitely fails for MRI 1.9. It seems like getting the binding of an ostruct in 1.9 doesn't work for evaluating local variables. Perhaps they changed ostruct? Here's what happens for me: irb(main):020:0> ostruct = OpenStruct.new({:foo => 'bar'}) => #<OpenStruct foo="bar"> irb(main):021:0> ostruct_binding = ostruct.send(:binding) => #<Binding:0x2545dd0> irb(main):022:0> eval("foo", ostruct_binding) NameError: undefined local variable or method `foo' for main:Object IronRuby 1.1 aims for compatibility with ruby 1.9 (and ships standard libraries such as ostruct from 1.9 also), so it is designed to fail with the same errors as MRI 1.9 I'm not sure what you can do to work around it, all the best. ______________________________________________________ Orion Edwards | Technical Leader PHONE +64 7 838 9800 | FAX +64 7 838 9801 | EMAIL orion.edwa...@gallagher.co | WEB www.gallagher.co From: Nathan Standiford <nstan...@live.com> To: <ironruby-core@rubyforge.org> Date: 20/06/2012 10:53 a.m. Subject: Re: [Ironruby-core] Problem with using OpenStruct and ERB Sent by: ironruby-core-boun...@rubyforge.org ________________________________________ I am trying to send the binding of the OpenStruct object not the binding of main. I have been using this with MRI 1.8.6 for some time and works fine. From: ironruby-core-boun...@rubyforge.org [mailto:ironruby-core-boun...@rubyforge.org] On Behalf Of Orion Edwards Sent: Tuesday, June 19, 2012 2:23 PM To: ironruby-core@rubyforge.org Subject: Re: [Ironruby-core] Problem with using OpenStruct and ERB I notice that in your example, you don't declare the local variable foo anywhere: If I run it verbatim, both MRI and IronRuby fail with undefined method foo (and fair enough, foo isn't defined). When I declare foo as a local variable, both MRI and IronRuby work fine for me. ______________________________________________________ Orion Edwards | Technical Leader PHONE +64 7 838 9800 | FAX +64 7 838 9801 | EMAIL orion.edwa...@gallagher.co | WEB www.gallagher.co From: Nathan Standiford <nstan...@live.com> To: <ironruby-core@rubyforge.org> Date: 20/06/2012 04:55 a.m. Subject: [Ironruby-core] Problem with using OpenStruct and ERB Sent by: ironruby-core-boun...@rubyforge.org ________________________________________ I am using OpenStructs and ERB for template generation. In this simple example, ruby 1.8.6 runs this fine: require "erb" require "ostruct" puts ERB.new("<%=foo%>", 0, "%<>").result(OpenStruct.new({ :foo => "bar" }).send(:binding)) However, it generates the following error when I run this in IronRuby 1.1.3.0 on .NET 4.0.30319.269: (erb):2: undefined method `foo' for main:Object (NoMethodError) Does anyone know how to get this to behave correctly in IronRuby? _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org _______________________________________________ Ironruby-core mailing list Ironruby-core@rubyforge.org http://rubyforge.org/mailman/listinfo/ironruby-core