Module: Mongo::Model::Conversion

Defined in:
lib/mongo/model/conversion.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#model_to_json(*args, &block) ⇒ Object Also known as: to_json 



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# File 'lib/mongo/model/conversion.rb', line 4

def model_to_json *args, &block
  to_rson(*args, &block).to_json
end

#model_to_xml(*args, &block) ⇒ Object Also known as: to_xml 



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# File 'lib/mongo/model/conversion.rb', line 8

def model_to_xml *args, &block
  to_rson(*args, &block).to_xml
end

#to_rson(options = {}, &block) ⇒ Object 



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# File 'lib/mongo/model/conversion.rb', line 24

def to_rson options = {}, &block
  options = {profile: options} if options.is_a? Symbol

  if profile = options[:profile]
    raise "no other optins are allowed when using :profile option!" if options.size > 1
    meta = self.class.profiles[profile] || raise("profile :#{profile} not defined for #{self.class}!")
    profile_options, profile_block = meta
    to_rson profile_options.merge(_profile: profile), &profile_block
  else
    options.validate_options! :only, :except, :methods, :errors, :id, :_profile
    child_options = options[:_profile] ? {profile: options[:_profile]} : {}

    instance_variables = self.persistent_instance_variable_names

    if only = options[:only]
      instance_variables &= Array(only).collect{|n| :"@#{n}"}
    elsif except = options[:except]
      instance_variables -= Array(except).collect{|n| :"@#{n}"}
    end

    result = {}
    instance_variables.each do |iv_name|
      value = instance_variable_get iv_name
      # value = convert_object value, :to_rson, child_options
      result[iv_name[1.. -1].to_sym] = value.to_rson child_options
    end

    methods = options[:methods] ? Array(options[:methods]) : []
    methods.each do |method|
      value = send method
      # value = convert_object value, :to_rson, child_options
      result[method.to_sym] = value.to_rson child_options
    end

    with_errors = options.include?(:errors) ? options[:errors] : true
    if with_errors and !(errors = self.errors).empty?
      errors = {}
      self.errors.each{|k, v| errors[k.to_sym] = v}
      result[:errors] = errors
    end

    result[:id] = id if id and (options[:id] != false)

    instance_exec result, &block if block

    result
  end
end