Class: JSONAPI::OperationsProcessor

Inherits:
Object
  • Object
show all
Includes:
Callbacks
Defined in:
lib/jsonapi/operations_processor.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Callbacks

included

Class Method Details

.operations_processor_for(operations_processor) ⇒ Object 



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# File 'lib/jsonapi/operations_processor.rb', line 21

def operations_processor_for(operations_processor)
  operations_processor_class_name = "#{operations_processor.to_s.camelize}OperationsProcessor"
  operations_processor_class_name.safe_constantize
end

Instance Method Details

#process(request) ⇒ Object 



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# File 'lib/jsonapi/operations_processor.rb', line 27

def process(request)
  @results = JSONAPI::OperationResults.new
  @request = request
  @operations = request.operations

  # Use transactions if more than one operation and if one of the operations can be transactional
  # Even if transactional transactions won't be used unless the derived OperationsProcessor supports them.
  @transactional = false
  if @operations.length > 1
    @operations.each do |operation|
      @transactional = @transactional | operation.transactional
    end
  end

  run_callbacks :operations do
    transaction do
      # Links and meta data global to the set of operations
      @operations_meta = {}
      @operations_links = {}
      @operations.each do |operation|
        @operation = operation
        # Links and meta data for each operation
        @operation_meta = {}
        @operation_links = {}
        run_callbacks :operation do
          @result = nil
          run_callbacks @operation.class.name.demodulize.underscore.to_sym do
            @result = process_operation(@operation)
          end
          @result.meta.merge!(@operation_meta)
          @result.links.merge!(@operation_links)
          @results.add_result(@result)
          if @results.has_errors?
            rollback
          end
        end
      end
      @results.meta = @operations_meta
      @results.links = @operations_links
    end
  end
  @results
end