Class: Summon::Schema::Attr

Inherits:
Object show all
Defined in:
lib/summon/schema.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options) ⇒ Attr

Returns a new instance of Attr.



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# File 'lib/summon/schema.rb', line 72

def initialize(name, options)
  @name = name
  @boolean = options[:boolean]
  @camel_name = camelize(name.to_s)
  @pascal_name = @camel_name.gsub(/^\w/) {|first| first.upcase}
  @transform = options[:transform]
  @json_name = options[:json_name].to_s if options[:json_name]
  @json_name = "is#{@pascal_name}" if @boolean unless @json_name
  @single = options[:single].nil? ? !(name.to_s.downcase =~ /s$/) : options[:single]
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/summon/schema.rb', line 71

def name
  @name
end

Instance Method Details

#camelize(str) ⇒ Object 



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# File 'lib/summon/schema.rb', line 94

def camelize(str)
  str.gsub /(\w)_(\w)/ do
    "#{$1}#{$2.upcase}"
  end
end

#get(service, json) ⇒ Object 



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# File 'lib/summon/schema.rb', line 83

def get(service, json)
  raw = json[@json_name || @camel_name]
  raw = json[@pascal_name] if raw.nil?
  if raw.nil?
    @single ? nil : []
  else
    raw = @single && raw.kind_of?(Array) ? raw.first : raw
    transform(service, raw) || raw
  end
end

#pascalize(str) ⇒ Object 



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# File 'lib/summon/schema.rb', line 100

def pascalize(str)
  str.gsub(/(_|^)(\w)/) {$2.upcase}
end

#transform(service, raw) ⇒ Object 



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# File 'lib/summon/schema.rb', line 104

def transform(service, raw)
  if @transform
    case @transform
      when Class
        ctor = proc do |s,h|
          @transform.new(s, h)
        end

      when Array
        obj = ::Summon
        @transform.each do |ns|
          obj = obj.const_get(pascalize(ns.to_s))
        end
        ctor = proc do |s, h|
          obj.new(s, h)
        end

      else
        ctor = proc do |s,h|
          ::Summon.const_get(@transform).new(s,h)
        end
    end
    raw.kind_of?(Array) ? raw.map {|a| [service, a]}.map(&ctor) : ctor.call(service, raw)
  end
end