Consolidate RequestBuilders into SearchService

projectblacklight · Oct 17, 2017 · 3544eb8 · 3544eb8
1 parent 50c2a4f
commit 3544eb8
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Showing 2 changed files with 38 additions and 44 deletions.
diff --git a/app/controllers/concerns/blacklight/request_builders.rb b/app/controllers/concerns/blacklight/request_builders.rb
diff --git a/app/services/blacklight/search_service.rb b/app/services/blacklight/search_service.rb
@@ -2,8 +2,6 @@
 # SearchService returns search results from the repository
 module Blacklight
   class SearchService
-    include Blacklight::RequestBuilders
-
     def initialize(blacklight_config, user_params = {})
       @blacklight_config = blacklight_config
       @user_params = user_params
@@ -12,6 +10,44 @@ def initialize(blacklight_config, user_params = {})
     # TODO: Can this be private?
     attr_reader :blacklight_config
 
+    # Override this method to use a search builder other than the one in the config
+    delegate :search_builder_class, to: :blacklight_config
+
+    def search_builder
+      search_builder_class.new(self)
+    end
+
+    ##
+    # Opensearch autocomplete parameters for plucking a field's value from the results
+    def solr_opensearch_params(field)
+      solr_params = {}
+      solr_params[:rows] ||= 10
+      solr_params[:fl] = field || blacklight_config.view_config(:opensearch).title_field
+      solr_params
+    end
+
+    ##
+    # Pagination parameters for selecting the previous and next documents
+    # out of a result set.
+    def previous_and_next_document_params(index, window = 1)
+      solr_params = blacklight_config.document_pagination_params.dup
+
+      if solr_params.empty?
+        solr_params[:fl] = blacklight_config.document_model.unique_key
+      end
+
+      if index > 0
+        solr_params[:start] = index - window # get one before
+        solr_params[:rows] = 2 * window + 1 # and one after
+      else
+        solr_params[:start] = 0 # there is no previous doc
+        solr_params[:rows] = 2 * window # but there should be one after
+      end
+
+      solr_params[:facet] = false
+      solr_params
+    end
+
     # a solr query method
     # @param [Hash] user_params ({}) the user provided parameters (e.g. query, facets, sort, etc)
     # @yield [search_builder] optional block yields configured SearchBuilder, caller can modify or create new SearchBuilder to be used. Block should return SearchBuilder to be used.