Allow field presenter arguments to get passed through the document presenter

.rubocop.yml

@@ -42,6 +42,7 @@ Metrics/ClassLength:
     - "lib/blacklight/search_builder.rb"
     - "lib/blacklight/search_state.rb"
     - "lib/blacklight/search_state/filter_field.rb"
+    - "app/presenters/blacklight/document_presenter.rb"
 
 Layout/LineLength:
   Max: 200

app/presenters/blacklight/document_presenter.rb

@@ -11,29 +11,48 @@ class DocumentPresenter
     # @param [SolrDocument] document
     # @param [ActionView::Base] view_context scope for linking and generating urls
     # @param [Blacklight::Configuration] configuration
-    def initialize(document, view_context, configuration = view_context.blacklight_config)
+    def initialize(document, view_context, configuration = view_context.blacklight_config, view_config: nil, field_presenter_options: {})
       @document = document
       @view_context = view_context
       @configuration = configuration
+      @view_config = view_config
+      @field_presenter_options = field_presenter_options
     end
 
     # @return [Hash<String,Configuration::Field>]  all the fields for this index view that should be rendered
-    def fields_to_render
-      return to_enum(:fields_to_render) unless block_given?
+    def fields_to_render(document_fields = fields, **kwargs)
+      unless block_given?
+        return to_enum(:fields_to_render, document_fields, **kwargs) unless method(:fields_to_render).arity.zero?
 
-      fields.each do |name, field_config|
-        field_presenter = field_presenter(field_config)
+        Deprecation.warn(self.class, 'In Blacklight 8, Blacklight::DocumentPresenter#fields_to_render accepts additional arguments')
+
+        return to_enum(:fields_to_render)
+      end
+
+      document_fields.each do |name, field_config|
+        field_presenter = field_presenter(field_config, kwargs)
 
         next unless field_presenter.render_field? && field_presenter.any?
 
         yield name, field_config, field_presenter
       end
     end
 
-    def field_presenters
-      return to_enum(:field_presenters) unless block_given?
+    def field_presenters(document_fields = fields, **kwargs)
+      unless block_given?
+        return to_enum(:field_presenters, document_fields, **kwargs) unless method(:field_presenters).arity.zero?
+
+        Deprecation.warn(self.class, 'In Blacklight 8, Blacklight::DocumentPresenter#field_presenters accepts additional arguments')
 
-      fields_to_render.each { |_, _, config| yield config }
+        return to_enum(:field_presenters)
+      end
+
+      if method(:fields_to_render).arity.zero?
+        Deprecation.warn(self.class, 'In Blacklight 8, Blacklight::DocumentPresenter#fields_to_render accept additional arguments')
+        fields_to_render.each { |_, _, config| yield config }
+      else
+        fields_to_render(document_fields, **kwargs).each { |_, _, config| yield config }
+      end
     end
 
     ##
@@ -122,7 +141,7 @@ def view_config
     end
 
     def show_view_config
-      configuration.view_config(:show)
+      configuration.view_config(:show, action_name: view_context.action_name)
     end
 
     def inspect
@@ -158,7 +177,7 @@ def field_presenter(field_config, options = {})
     end
 
     def field_presenter_options
-      {}
+      @field_presenter_options ||= {}
     end
   end
 end

app/presenters/blacklight/index_presenter.rb

@@ -30,7 +30,7 @@ def label(field_or_string_or_proc, opts = {})
     deprecation_deprecate label: 'Use #heading'
 
     def view_config
-      @view_config ||= configuration.view_config(view_context.document_index_view_type)
+      @view_config ||= configuration.view_config(view_context.document_index_view_type, action_name: view_context.action_name)
     end
 
     private

spec/presenters/blacklight/document_presenter_spec.rb

@@ -12,6 +12,7 @@
 
   before do
     allow(request_context).to receive(:search_state).and_return(search_state)
+    allow(request_context).to receive(:action_name).and_return(:show)
   end
 
   describe '#fields_to_render' do

spec/presenters/blacklight/index_presenter_spec.rb

@@ -22,6 +22,7 @@
 
   before do
     allow(request_context).to receive(:search_state).and_return(search_state)
+    allow(request_context).to receive(:action_name).and_return(:index)
   end
 
   describe '#fields' do

spec/presenters/blacklight/show_presenter_spec.rb

@@ -22,6 +22,7 @@
 
   before do
     allow(request_context).to receive(:search_state).and_return(search_state)
+    allow(request_context).to receive(:action_name).and_return(:show)
   end
 
   describe "link_rel_alternates" do