add functionality to hide all search indicator arrows via config

README.md

@@ -213,6 +213,15 @@ The sort link may be displayed without the order indicator arrow by passing
 <%= sort_link(@q, :name, hide_indicator: true) %>
 ```
 
+Alternatively, all sort links may be displayed without the order indicator arrow 
+by adding this to an initializer like `config/initializers/ransack.rb`:
+
+```ruby
+Ransack.configure do |c|
+  c.remove_search_order_indicators = true
+end
+```
+
 ### Advanced Mode
 
 "Advanced" searches (ab)use Rails' nested attributes functionality in order to

lib/ransack/configuration.rb

@@ -8,7 +8,8 @@ module Configuration
     self.predicates = {}
     self.options = {
       :search_key => :q,
-      :ignore_unknown_conditions => true
+      :ignore_unknown_conditions => true,
+      :hide_sort_order_indicators => false
     }
 
     def configure
@@ -75,5 +76,9 @@ def arel_predicate_with_suffix(arel_predicate, suffix)
       end
     end
 
+    def hide_sort_order_indicators=(boolean)
+      self.options[:remove_search_order_indicators] = boolean
+    end
+
   end
 end

lib/ransack/helpers/form_helper.rb

@@ -94,7 +94,7 @@ def initialize(search, attribute, args, params)
           @current_dir    = existing_sort_direction
           @label_text     = extract_label_and_mutate_args!(args)
           @options        = extract_options_and_mutate_args!(args)
-          @hide_indicator = @options.delete :hide_indicator
+          @hide_indicator = indicator?
           @default_order  = @options.delete :default_order
         end
 
@@ -197,8 +197,12 @@ def default_sort_order(attr_name)
             end
           end
 
+          def indicator?
+            @options.delete :hide_indicator unless Ransack.options[:hide_sort_order_indicators]
+          end
+
           def order_indicator
-            if @hide_indicator || no_sort_direction_specified?
+            if @hide_indicator || no_sort_direction_specified? 
               nil
             else
               direction_arrow

spec/ransack/helpers/form_helper_spec.rb

@@ -399,6 +399,34 @@ module Helpers
         it { should match /example_name_eq/ }
       end
 
+      describe '#search_form_for with config set to remove sort order indicators' do
+        before do
+          Ransack.configure { |c| c.hide_sort_order_indicators = true }
+        end
+        subject { @controller.view_context
+          .sort_link(
+            [:main_app, Person.search(sorts: ['name desc'])],
+            :name,
+            controller: 'people'
+          )
+        }
+        it { should match /Full Name/ }
+      end
+
+      describe '#search_form_for with config set to remove sort order indicators' do
+        before do
+          Ransack.configure { |c| c.hide_sort_order_indicators = false }
+        end
+        subject { @controller.view_context
+          .sort_link(
+            [:main_app, Person.search(sorts: ['name desc'])],
+            :name,
+            controller: 'people'
+          )
+        }
+        it { should match /Full Name ▼/ }
+      end
+
     end
   end
 end