Class: LedgerSync::Util::ResourceConverter

Inherits:
Object
  • Object
show all
Defined in:
lib/ledger_sync/util/resource_converter.rb,
lib/ledger_sync/util/resource_converter/attribute.rb,
lib/ledger_sync/util/resource_converter/attribute_set.rb,
lib/ledger_sync/util/resource_converter/type/references_one_type.rb,
lib/ledger_sync/util/resource_converter/type/references_many_type.rb,
lib/ledger_sync/util/resource_converter/type/resource_converter_type.rb

Defined Under Namespace

Modules: Type Classes: Attribute, AttributeSet

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

._attribute(destination_attribute = nil, args = {}, &block) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 42

def self._attribute(destination_attribute = nil, args = {}, &block)
  if args.key?(:destination_attribute)
    raise 'You cannot provide destination_attribute in args.  Pass the value as the first argument.'
  end

  attributes.add(
    ResourceConverter::Attribute.new(
      args.merge(
        block: (block if block_given?),
        destination_attribute: destination_attribute
      )
    )
  )
end

._references(destination_attribute = nil, args = {}, &block) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 65

def self._references(destination_attribute = nil, args = {}, &block)
  reference_type     = args.fetch(:reference_type)
  resource_converter = args.fetch(:resource_converter)

  reference_type_class = case reference_type
                         when :many
                           ResourceConverter::Type::ReferencesManyType
                         when :one
                           ResourceConverter::Type::ReferencesOneType
                         else
                           raise "Unkown reference type: #{references_type}"
                         end

  _attribute(
    destination_attribute,
    {
      type: reference_type_class.new(
        resource_converter: resource_converter
      )
    }.merge(
      args.except(
        %i[
          reference_type
          resource_converter
        ]
      )
    ),
    &block
  )
end

.attribute(*args, &block) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 57

def self.attribute(*args, &block)
  _attribute(*args, &block)
end

.attributes ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 61

def self.attributes
  @attributes ||= ResourceConverter::AttributeSet.new(resource_converter_class: self)
end

.references_many(destination_attribute = nil, args = {}, &block) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 106

def self.references_many(destination_attribute = nil, args = {}, &block)
  _references(
    destination_attribute,
    {
      reference_type: :many
    }.merge(args),
    &block
  )
end

.references_one(destination_attribute = nil, args = {}, &block) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 96

def self.references_one(destination_attribute = nil, args = {}, &block)
  _references(
    destination_attribute,
    {
      reference_type: :one
    }.merge(args),
    &block
  )
end

Instance Method Details

#convert(args = {}) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 10

def convert(args = {})
  destination  = args.fetch(:destination).dup
  destination  = Util::HashHelpers.deep_stringify_keys(destination) if destination.is_a?(Hash)
  only_changes = args.fetch(:only_changes, false)
  source       = args.fetch(:source).dup
  source       = Util::HashHelpers.deep_stringify_keys(source) if source.is_a?(Hash)

  convertable_attributes(only_changes: only_changes, source: source).each do |converter_attribute|
    args_to_pass = {
      destination: destination,
      source: source
    }
    next if converter_attribute.if_method.present? && !send(converter_attribute.if_method, args_to_pass)

    # This is for in place changes
    destination = converter_attribute.build_destination!(args_to_pass)
  end

  destination
end

#convertable_attributes(args = {}) ⇒ Object 



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# File 'lib/ledger_sync/util/resource_converter.rb', line 31

def convertable_attributes(args = {})
  converter_attributes = self.class.attributes
  source               = args.fetch(:source)

  return converter_attributes unless args[:only_changes] == true

  raise 'only_changes can only be passed when the source is a resource' if source.is_a?(Hash)

  converter_attributes.select { |e| source.attribute_changed?(e.source_attribute) }
end