Module: Scat::Autocomplete

Included in:
App
Defined in:
lib/scat/autocomplete.rb

Overview

Auto-completion mix-in.

Instance Method Summary collapse

Instance Method Details

#autocomplete(attribute, text) ⇒ String

Fetches controlled caTissue values for the given attribute and value prefix. The supported attributes include the following:

  • :clinical_diagnosis (SpecimenCollectionGroup.clinical_diagnosis)

  • :tissue_site (SpecimenCharacteristics.tissue_site)

Parameters:

  • attribute (Symbol) —

    the CV attribute

  • prefix (String) —

    the leading value letters

Returns:

  • (String) —

    the JSON representation of the matching values



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# File 'lib/scat/autocomplete.rb', line 16

def autocomplete(attribute, text)
  # Start up the cache if necessary
  @cache ||= Cache.new
  # Compare lower case.
  text_dc = text.downcase
  # The search term is the first word in the text.
  words = text_dc.split(' ')
  term = words.first
  logger.debug { "Scat is matching the cached #{attribute} values which contain #{term}..." }
  # The hash key, e.g. dx:lymphoma.
  key = KEY_PREFIX_HASH[attribute] + term
  # The CVs which match the term.
  cvs = @cache.get_all(key)
  # Load the CVs if necessary.
  cvs = load_controlled_values(attribute, term, key) if cvs.empty?
  # The CVs which match the entire target.
  matched = words.size == 1 ? cvs : cvs.select { |cv| cv.downcase[text_dc] }
  logger.debug { "#{matched.empty? ? 'No' : matched.size} #{attribute} values match '#{text}'." }
  matched.to_json
end