Module: Modelizer::ClassMethods

Defined in:
lib/modelizer.rb

Instance Method Summary collapse

Instance Method Details

#model_template_for(klass, defaults = {}, &block) ⇒ Object 



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# File 'lib/modelizer.rb', line 61

def model_template_for klass, defaults = {}, &block
  if defaults.nil? && !block
    raise ArgumentError, "default attributes or lazy block required"
  end

  ::Modelizer.cache[klass] = [defaults, block]

  klass   = klass.name
  nsklass = Modelizer.namespace? ? klass : klass.split("::").last
  model   = ::Modelizer.underscore nsklass

  module_eval <<-END, __FILE__, __LINE__ + 1
    def valid_#{model}_attributes extras = {}
      valid_model_template_attributes #{klass}, extras
    end

    def valid_#{model}_attributes_without *excluded
      valid_model_template_attributes_without #{klass}, excluded
    end

    def new_#{model} extras = {}
      assign_model_template_attributes #{klass}.new,
        valid_model_template_attributes(#{klass}, extras)
    end

    def new_#{model}_without *excluded
      assign_model_template_attributes #{klass}.new,
        valid_model_template_attributes_without(#{klass}, excluded)
    end

    def create_#{model} extras = {}
      (m = new_#{model}(extras)).save; m
    end

    def create_#{model}! extras = {}
      (m = new_#{model}(extras)).save!; m
    end

    def create_#{model}_without *excluded
      (m = new_#{model}_without(*excluded)).save; m
    end

    def create_#{model}_without! *excluded
      (m = new_#{model}_without(*excluded)).save!; m
    end
  END

  # Install a test that ensures the model template is valid. If
  # the template is defined in one of the abstract test
  # superclasses, generate a whole new testcase. If it's in a
  # concrete test, just generate a method.

  file, line = caller.first.split ":"
  line = line.to_i

  test = <<-END
    def test_model_template_for_#{model}
      assert (m = new_#{model}).valid?,
        "#{klass} template is invalid: " +
          m.errors.full_messages.to_sentence
    end
  END

  if TEST_CLASSES.include? self
    eval <<-END, nil, file, line - 2
      class ::ModelTemplateFor#{klass}Test < ActiveSupport::TestCase
        #{test}
      end
    END
  else
    module_eval test, file, line - 1
  end
end