Module: Sufia::CollectionBehavior

Extended by:
ActiveSupport::Concern
Includes:
Hydra::Collection, GenericFile::Permissions, ModelMethods, Noid
Included in:
Collection
Defined in:
app/models/concerns/sufia/collection_behavior.rb

Instance Method Summary collapse

Methods included from Permissions::Readable

#private?, #public?, #registered?

Methods included from Permissions::Writable

#clear_permissions!, #paranoid_edit_permissions, #paranoid_permissions

Methods included from Noid

#assign_id, #to_param

Methods included from ModelMethods

#to_s

Instance Method Details

#bytes ⇒ Fixnum

Compute the sum of each file in the collection using Solr to avoid having to hit Fedora

Returns:

  • (Fixnum) —

    size of collection in bytes

Raises:

  • (RuntimeError) —

    unsaved record does not exist in solr



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# File 'app/models/concerns/sufia/collection_behavior.rb', line 18

def bytes
  rows = members.count
  return 0 if rows == 0

  raise "Collection must be saved to query for bytes" if new_record?

  query = ActiveFedora::SolrQueryBuilder.construct_query_for_rel(has_model: file_model)
  args = {
    fq: "{!join from=hasCollectionMember_ssim to=id}id:#{id}",
    fl: "id, #{file_size_field}",
    rows: rows
  }

  files = ActiveFedora::SolrService.query(query, args)
  files.reduce(0) { |sum, f| sum + f[file_size_field].to_i }
end