Module: Quiver::Adapter::ActiveRecord

Includes:
HelpersHelpers
Defined in:
lib/quiver/adapter/active_record_helpers.rb,
lib/quiver/adapter/arec_low_level_creator.rb,
lib/quiver/adapter/arec_low_level_deleter.rb,
lib/quiver/adapter/arec_low_level_updater.rb

Defined Under Namespace

Modules: ClassMethods Classes: ARecLowLevelCreator, ARecLowLevelDeleter, ARecLowLevelUpdater

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(host) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 12

def self.included(host)
  super

  host.adapter_type(:active_record)
  host.send(:extend, ClassMethods)
end

Instance Method Details

#count ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 65

def count
  count = default_record_class.count

  Quiver::Adapter::AdapterResult.new(count)
end

#create(attributes, transaction) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 71

def create(attributes, transaction)
  persister = ARecLowLevelCreator.new(self.class, attributes)

  if attributes[:__type__]
    attributes = attributes.merge(
      attributes[:__type__][:name] => attributes[:__type__][:value]
    )

    attributes.delete(:__type__)
  end

  begin
    create_mappings(attributes, persister)
  rescue ::ActiveRecord::ActiveRecordError
    transaction.rollback!
    persister.failed!
  end

  Quiver::Adapter::AdapterResult.new do |errors|
    if persister.success?
      persister.result
    else
      errors << Quiver::Error.new('record', 'not_persisted')
      nil
    end
  end
end

#find(primary_key) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 54

def find(primary_key)
  Quiver::Adapter::AdapterResult.new do |errors|
    if record = base_query.find_by(primary_key_name => primary_key)
      load_additional([record.attributes.symbolize_keys]).first
    else
      errors << Quiver::Mapper::NotFoundError.new('record', 'not_found')
      nil
    end
  end
end

#hard_delete(attributes, transaction) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 127

def hard_delete(attributes, transaction)
  unpersister = ARecLowLevelDeleter.new(self.class, attributes)

  if attributes[:__type__]
    attributes = attributes.merge(
      attributes[:__type__][:name] => attributes[:__type__][:value]
    )

    attributes.delete(:__type__)
  end

  begin
    delete_mappings(attributes, unpersister)
  rescue ::ActiveRecord::ActiveRecordError
    transaction.rollback!
    unpersister.failed!
  end

  Quiver::Adapter::AdapterResult.new do |errors|
    if unpersister.success?
      {}
    else
      errors << Quiver::Error.new('record', 'not_deleted')
      nil
    end
  end
end

#query(q = {}) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 155

def query(q={})
  filter_params = q[:filter] || {}
  sort_params = q[:sort] || {}
  pagination_params = q[:page] || {}

  query = filter_klass.new(
    base_query,
    filter_params
  ).filter

  count_query = filter_klass.new(
    base_count_query,
    filter_params
  ).filter

  sort_params.each do |attr, asc|
    order = asc ? 'ASC' : 'DESC'
    query = query.order("#{attr} #{order}")
    count_query = count_query.order("#{attr} #{order}")
  end

  total_count = count_query.count

  if pagination_params['limit'] && pagination_params['limit'] != -1
    query = query.limit(pagination_params['limit'])
  end

  if pagination_params['offset']
    query = query.offset(pagination_params['offset'])
  end

  objects = load_additional(query.map(&:attributes).map(&:symbolize_keys))
  result = Quiver::Adapter::AdapterResult.new(objects)

  if pagination_params.any?
    result.data[:pagination_offset] = pagination_params['offset'] || 0
    result.data[:pagination_limit] = pagination_params['limit'] || -1
    result.data[:total_count] = total_count
  end

  result
end

#update(attributes, transaction) ⇒ Object 



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# File 'lib/quiver/adapter/active_record_helpers.rb', line 99

def update(attributes, transaction)
  persister = ARecLowLevelUpdater.new(self.class, attributes)

  if attributes[:__type__]
    attributes = attributes.merge(
      attributes[:__type__][:name] => attributes[:__type__][:value]
    )

    attributes.delete(:__type__)
  end

  begin
    update_mappings(attributes, persister)
  rescue ::ActiveRecord::ActiveRecordError
    transaction.rollback!
    persister.failed!
  end

  Quiver::Adapter::AdapterResult.new do |errors|
    if persister.success?
      persister.result
    else
      errors << Quiver::Error.new('record', 'not_updated')
      nil
    end
  end
end