Method: JSONAPI::Processor#show_related_resources

Defined in:
lib/jsonapi/processor.rb 


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# File 'lib/jsonapi/processor.rb', line 139

def show_related_resources
  source_klass = params[:source_klass]
  source_id = params[:source_id]
  relationship_type = params[:relationship_type]
  filters = params[:filters]
  include_directives = params[:include_directives]
  sort_criteria = params[:sort_criteria]
  paginator = params[:paginator]
  fields = params[:fields]

  source_resource ||= source_klass.find_by_key(source_id, context: context, fields: fields)

  related_resources = source_resource.public_send(relationship_type,
                                                  context: context,
                                                  filters: filters,
                                                  include_directives: include_directives,
                                                  sort_criteria: sort_criteria,
                                                  paginator: paginator,
                                                  fields: fields)

  if ((JSONAPI.configuration.top_level_meta_include_record_count) ||
      (paginator && paginator.class.requires_record_count) ||
      (JSONAPI.configuration.top_level_meta_include_page_count))
    related_resource_records = source_resource.public_send("records_for_" + relationship_type)
    records = resource_klass.filter_records(filters, {},
                                            related_resource_records)

    record_count = resource_klass.count_records(records)
  end

  if (JSONAPI.configuration.top_level_meta_include_page_count && record_count)
    page_count = paginator.calculate_page_count(record_count)
  end

  pagination_params = if paginator && JSONAPI.configuration.top_level_links_include_pagination
                        page_options = {}
                        page_options[:record_count] = record_count if paginator.class.requires_record_count
                        paginator.links_page_params(page_options)
                      else
                        {}
                      end

  opts = {}
  opts.merge!(pagination_params: pagination_params) if JSONAPI.configuration.top_level_links_include_pagination
  opts.merge!(record_count: record_count) if JSONAPI.configuration.top_level_meta_include_record_count
  opts.merge!(page_count: page_count) if JSONAPI.configuration.top_level_meta_include_page_count

  return JSONAPI::RelatedResourcesOperationResult.new(:ok,
                                                      source_resource,
                                                      relationship_type,
                                                      related_resources,
                                                      opts)
end