Class: LabelModel

Inherits:
ASpaceExport::ExportModel show all
Defined in:
backend/app/exporters/models/labels.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from ASpaceExport::ExportModel

#apply_map, inherited, model_for, model_for?

Constructor Details

#initialize(obj, tree) ⇒ LabelModel

Returns a new instance of LabelModel.



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# File 'backend/app/exporters/models/labels.rb', line 31

def initialize(obj, tree)
  @json = obj
  @tree = tree

  @file = ASUtils.tempfile('labels_')
  append(headers)

  generate_label_rows(self.children)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 80

def method_missing(meth)
  if @json.respond_to?(meth)
    @json.send(meth)
  else
    nil
  end
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file



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# File 'backend/app/exporters/models/labels.rb', line 29

def file
  @file
end

Class Method Details

.from_aspace_object(obj, tree) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 66

def self.from_aspace_object(obj, tree)
  labler = self.new(obj, tree)

  labler
end

.from_resource(obj, tree) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 73

def self.from_resource(obj, tree)
  labler = self.from_aspace_object(obj, tree)

  labler
end

Instance Method Details

#append(row) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 42

def append(row)
  CSV.open(@file, 'a', col_sep: "\t") { |csv| csv << row }
end

#children ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 104

def children
  return nil unless @tree.children

  ao_class = self.class.instance_variable_get(:@ao)

  @tree.children.map { |subtree| ao_class.new(subtree) }
end

#full_row(row) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 47

def full_row(row)
  [self.repo_name, self.title, self.identifier] + row
end

#generate_label_rows(objects) ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 125

def generate_label_rows(objects)
  @top_containers ||= []
  @series ||= ""

  objects.each do |obj|
    @series = obj.display_string if obj.level == 'series'
    obj.instances.each do |instance|
      next unless (sub = instance['sub_container'])
      # output each unique container per series (a container may be used in multiple series)
      digest = Digest::SHA1.hexdigest(@series + sub['top_container']['ref'])
      next if @top_containers.include?(digest)
      @top_containers << digest

      # We get the Series ( the ancestor AO with the level == 'series' ) and
      # the name of the AO we're processing
      container_row = [@series, obj.display_string]

      # Top Container time
      top = sub['top_container']['_resolved']

      # this will give us:
      #  "#{name} [#{depth}d, #{height}h, #{width}w #{dimension_units}] extent measured by #{extent_dimension}"
      container_row << value_or_blank( top, %w( container_profile _resolved display_string ))

      container_row << "#{value_or_blank( top, %w( type ))}: #{value_or_blank( top, %w( indicator ))}"

      container_row << value_or_blank(top, %w( barcode ))

      # these get the grandchild SubContainers of the Top Container
      # e.g. Carton: 1 and Folder: 71
      container_row << [ value_or_blank( sub, %w( type_2 )), value_or_blank( sub, %w( indicator_2 ) ) ]
        .reject { |v| v.empty? }.join(":")
      container_row << [ value_or_blank( sub, %w( type_3 )), value_or_blank( sub, %w( indicator_3 ) ) ]
        .reject { |v| v.empty? }.join(":")


      current_location = top["container_locations"].find { |loc| loc["status"] === 'current' } || {}
      container_row << value_or_blank( current_location, %w( _resolved title  ) )

      append(full_row(container_row))
    end
    generate_label_rows(obj.children)

  end
end

#headers ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 52

def headers
  %w(
    Repository\ Name Resource\ Title Resource\ Identifier Series\ Archival\ Object\ Title
    Archival\ Object\ Title Container\ Profile Top\ Container Top\ Container\ Barcode
    SubContainer\ 1 SubContainer\ 2 Current\ Location
  )
end

#identifier ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 88

def identifier
  @identifier ||= [:id_0, :id_1, :id_2, :id_3].map {|i| self.send(i) }.reject {|i| i.nil? }.join("-")

  @identifier
end

#repo_name ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 95

def repo_name
  if self.repository && self.repository.has_key?('_resolved')
    self.repository['_resolved']['name']
  else
    "Unknown"
  end
end

#stream ⇒ Object 



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# File 'backend/app/exporters/models/labels.rb', line 61

def stream
  File.open(@file).each # enumerator for stream response
end

#value_or_blank(hash, keys = []) ⇒ Object

this is a convenience method to either return either the value from a hash from an array of keys or a blank string ( if it does not exist )



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# File 'backend/app/exporters/models/labels.rb', line 115

def value_or_blank(hash, keys = [] )
  keys.reduce(hash) do |memo, k|
    if memo.is_a?(Hash) && memo[k]
      memo[k]
    else
      ""
    end
  end
end