Module: ALaChart::ClassMethods

Defined in:
lib/a_la_chart/a_la_chart.rb

Instance Method Summary collapse

Instance Method Details

#a_la_chart ⇒ Object 



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# File 'lib/a_la_chart/a_la_chart.rb', line 96

def a_la_chart
  include ALaChart::InstanceMethods
  
  # TODO: We should ensure this is for inherited_resources
  self.respond_to(:chartxml, :chartjs, :chartjson) if defined?(self.respond_to)
  
  self.before_filter(:provide_chart_data, :only => [:index, :show])
  
  # TODO: Namespace this stuff??
  # :meta, 
  [:before, :data, :value, :set_chart].each do |method|
    # TODO: swap this in Rails 3 and find a way to attach to helper
    # module_eval <<-end_eval
    master_helper_module.module_eval "      def \#{method}(*args, &block)                    # def data(*args, &block)\n        controller.send(%(\#{method}), *args, &block)  #   controller.send(%(data), *args, &block)\n      end                                             # end\n    end_eval\n  end\nend\n"

#before(*cases, &block) ⇒ Object 



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# File 'lib/a_la_chart/a_la_chart.rb', line 179

def before(*cases, &block)
  if cases.blank?
    define_method("do_before_data") do
      # note: instance_eval binds scope variables, call does not
      instance_eval(&block)
      # block.call(binding)
    end
  else
    cases.each { |caze|
      define_method("do_before_data_#{caze}") do
        # note: instance_eval binds scope variables, call does not
        instance_eval(&block)
        # block.call(binding)
      end
    }
  end
end

#chart(*types, &block) ⇒ Object 



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# File 'lib/a_la_chart/a_la_chart.rb', line 117

def chart(*types, &block)
  for type in types
    define_method("set_chart_#{type}") do
      block.call if block
    end
  end
end

#data(*attrs, &block) ⇒ Object 



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# File 'lib/a_la_chart/a_la_chart.rb', line 125

def data(*attrs, &block)
  options = Hash === attrs.last ? attrs.pop : {}
  cases = attrs
  
  # if attrs.size == 1
  #   attrs = attrs[0]
  #   if attrs.class == Hash
  #     options = attrs
  #   elsif attrs.class == Symbol || attrs.class == String
  #     cases = [attrs]
  #   end
  # elsif attrs.size > 1
  #   if attrs[-1].class == Hash
  #     cases = attrs[0...-1]
  #     options = attrs[-1]
  #   else
  #     cases = attrs[0..-1]
  #   end
  # end
  # 
  # cases ||= []
  # options ||= {}
  
  if cases.blank?
    define_method("get_data") do
      do_before_data if defined?(do_before_data)
      # note: instance_eval binds scope variables, call does not
      instance_eval(&block) || []
      # block.call(binding)
    end
    unless options.blank?
      define_method("get_meta") do
        options
      end
    end
  else
    cases.each { |caze|
      define_method("get_data_#{caze}") do
        if respond_to?("do_before_data_#{caze}")
          return [] unless send("do_before_data_#{caze}")
        elsif defined?(do_before_data)
          return [] unless do_before_data
        end
        # note: instance_eval binds scope variables, call does not
        instance_eval(&block) || []
        # block.call(binding)
      end
      define_method("get_meta_#{caze}") do
        options
      end
    }
  end
end