Module: BlacklightAdvancedSearch::ParseBasicQ

Extended by:
ActiveSupport::Concern
Defined in:
lib/blacklight_advanced_search/parse_basic_q.rb

Overview

A solr search logic mix-in to CatalogController. If mixed-in, adds Advanced Search parsing behavior to queries entered on basic/standard/simple search form too, for boolean expressions. 

simply:
  include BlacklightAdvancedSearch::ParseBasicQ

in your CatalogController

Instance Method Summary collapse

Instance Method Details

#add_advanced_parse_q_to_solr(solr_parameters, req_params = params) ⇒ Object

This method can be included in solr_search_params_logic to have us parse an ordinary entered :q for AND/OR/NOT and produce appropriate Solr query. Note that it is NOT included in solr_search_params_logic by default when this module is included, because it is optional behavior. BlacklightAdvancedSearch init code will add it to CatalogController if it’s configured to do so. You can of course add it yourself manually too.

Note: For syntactically invalid input, we’ll just skip the adv parse and send it straight to solr same as if advanced_parse_q were not being used.



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# File 'lib/blacklight_advanced_search/parse_basic_q.rb', line 28

def add_advanced_parse_q_to_solr(solr_parameters, req_params = params)
  unless req_params[:q].blank?
    field_def = search_field_def_for_key( req_params[:search_field]) ||
      default_search_field
      
            
    # If the individual field has advanced_parse_q suppressed, punt
    return if field_def[:advanced_parse] == false  
      
    solr_direct_params = field_def[:solr_parameters] || {}
    solr_local_params = field_def[:solr_local_parameters] || {}
    
    # See if we can parse it, if we can't, we're going to give up
    # and just allow basic search, perhaps with a warning.
    begin
      adv_search_params = ParsingNesting::Tree.parse(req_params[:q]).to_single_query_params( solr_local_params )
      
      BlacklightAdvancedSearch.deep_merge!(solr_parameters, solr_direct_params)
      BlacklightAdvancedSearch.deep_merge!(solr_parameters, adv_search_params)        
    rescue Parslet::UnconsumedInput => e 
      # do nothing, don't merge our input in, keep basic search
      # optional TODO, display error message in flash here, but hard to 
      # display a good one. 
      return
    end
  end
end