Skip to content


Repository files navigation

Build Status


MARC-specific enhancements for Blacklight


  • Rake task solr:marc:index to import .mrc files using Traject and app/models/marc_indexer
  • "Librarian View" at catalog/:id/librarian_view
  • Export records to refworks and endnote
  • Blacklight::Solr::Document mixins for exporting and transforming MARC data from a stored Solr field


Add this line to your application's Gemfile:

gem 'blacklight-marc'

And then execute:

$ bundle

After running the blacklight generator, run the blacklight_marc generator:

$ rails generate blacklight:marc:install

How does it work?

This generator injects an include into CatalogController (parent class of BookmarksController):

include Blacklight::Marc::Catalog

and the following code is generated into SolrDocument:

use_extension( Blacklight::Marc::DocumentExtension) do |document|
  document.key?( :marc_display  )

This means, the extension will be applied on the instance if the backing hash has a field called marc_display.


The generator will create a model called MarcIndexer. This model can be customized by modifying the field configurations in its initializer as a Traject 2 indexer; new indexing behaviors can be added to it via mixins or inline methods. Two example mixins are provided:

  # you would add one or both of the mixins below
  include Blacklight::Marc::Indexer::Formats
  include Blacklight::Marc::Indexer::Dewey
  def initialize
    # and define fields as normal with the mixed-in methods
    to_field 'format', get_format
    to_field 'dewey100', dewey_facets(base: :hundreds)
    to_field 'dewey010', dewey_facets(base: :tens)
    to_field 'dewey_text', dewey_text

Documentation, Information and Support


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request