gistfile1.rb

# In lib/query/base_query.rb
#
def to_params
  params = {}
  if @keywords
    params[:q] = @keywords
    params[:fl] = '* score'
    params[:fq] = types_phrase
    params[:qf] = text_field_names.join(' ')
    params[:defType] = 'dismax'
    params[:hl] = 'on'  # I added this line to enable highlighting in Solr
  else
    params[:q] = types_phrase
  end
  params
end


# In lib/sunspot/search/search.rb
#

#
# Get the search result highlights from Solr. Highlighting can be turned on by setting
# hl = true in the query parameters of the keyword search.
# Solr returns an XML-node <highlighting> wich contains a separate node for each object that was found
# during the keyword search. These separate nodes contain the highlighted keyword on which basis the object
# was found.
#
# === Returns
#
# Hash:: A hash of Arrays, each consisting of the document ID ('Movie 104') and the highlighted text
#
def highlights
  highlights = {}
  @solr_result['highlighting'].map{|hit| highlights.merge!({hit.first => hit.last['information_text']})}
  highlights
end


# In my app's ApplicationHelper
#
def search_highlight(search, object)
  id = "#{object.class} #{object.id}"
  if search.respond_to?(:highlights) && search.highlights[id]
    search.highlights[id]
  end
end

# This way I can do this in a view:
#

- @search.results.each do |result|
  ...
  %p= search_highlight(@search, result)