Into The Wind

If you work with web applications written using the Ruby on Rails framework, you might find this useful. Everyone else can treat this post like the waste of time it is. (maybe not work-safe)

I decided that subclassing FormBuilder was my best solution to a problem for one of my work projects. Being the behavior-driven development masochist that I am, I wanted to develop my custom FormBuilder example-first. There is surprisingly little information about this floating around the interwebs, so I decided to throw out a first cut via code example. Simplifications welcome.


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# build a ViewExampleGroup

describe CustomFormBuilder, :type => :view do

  before do

    # model name and model object

    object_name = ‘model’

    object = OpenStruct.new

    builder = CustomFormBuilder.new(object_name, object, template, {}, nil)



    # make the builder available to the view

    assigns[:builder] = builder

  end



  it ‘generates text fields’ do

    # run the builder in an ERb template…

    str = ‘<%= @builder.text_field(:foo) %>’

    render :inline => str



    # …and make sure you’re satisfied with the result

    template.should have_tag(‘input[name=?]’, ‘model[foo]’)

  end



  # …more examples…

end

posted by me | Tuesday, June 09, 2009 @ 01:11 AM | comment