Class: Twfy::DataElement

Inherits:
Object
  • Object
show all
Defined in:
lib/twfy/data_element.rb

Direct Known Subclasses

Constituency, Geometry, MP

Constant Summary collapse

@@conversions = 
{}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client, data = {}) ⇒ DataElement

Returns a new instance of DataElement.



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# File 'lib/twfy/data_element.rb', line 29

def initialize(client, data={})
  @client = client
  update_attributes(data)
end

Instance Attribute Details

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/twfy/data_element.rb', line 28

def client
  @client
end

Class Method Details

.convert(*fields, &block) ⇒ Object 



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# File 'lib/twfy/data_element.rb', line 12

def convert(*fields,&block)
  fields.each do |field|
    @@conversions[field] = block
  end
end

.convert_to_date(*fields) ⇒ Object 



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# File 'lib/twfy/data_element.rb', line 18

def convert_to_date(*fields)
  fields.each do |field|
    convert field do |d|
      Date.parse(d)
    end
  end
end

Instance Method Details

#convert(field, value) ⇒ Object 



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# File 'lib/twfy/data_element.rb', line 50

def convert(field, value)
  if conversion = @@conversions[field.to_sym]
    args = [value]
    args.unshift self if conversion.arity == 2
    conversion.call(*args)
  else
    value
  end
end

#update_attributes(data = {}) ⇒ Object 



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# File 'lib/twfy/data_element.rb', line 34

def update_attributes(data = {})
  data.each do |field,value|
    instance_variable_set("@#{field}", convert(field, value))
    unless self.respond_to?(field)
      self.class.send(:define_method, field) do
        instance_variable_get("@#{field}")
      end
    end
  end
end

#with(data = {}) ⇒ Object 



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# File 'lib/twfy/data_element.rb', line 45

def with(data = {})
  update_attributes(data)
  self
end