Fixed FileSet accessibility

hyrax/app/helpers/hyrax/workflows_helper.rb

+# frozen_string_literal: true
+module Hyrax
+  module WorkflowsHelper
+    # Does a workflow restriction exist for the given :object and
+    # given :ability?
+    #
+    # @note If the object responds to a :workflow_restriction?, we'll
+    #       use that answer.
+    #
+    # This method doesn't answer what kind of restriction is in place
+    # (that requires a far more nuanced permissioning system than
+    # Hyrax presently has).  Instead, it answers is there one in
+    # place.  From that answer, you may opt out of rendering a region
+    # on a view (e.g. don't show links to the edit page).
+    #
+    # @param object [Object]
+    # @param ability [Ability]
+    #
+    # @return [false] when there are no applicable workflow restrictions
+    #
+    # @return [true] when there is an applicable workflow restriction,
+    #         and you likely want to not render something.
+    #
+    # @note This is Jeremy, I encourage you to look at the views that
+    #       call this method to understand the conceptual space this
+    #       method covers.
+    #
+    # @todo As I noodle on this, I'm fairly certain we should be
+    #       registering a CanCan ability check.  I believe in
+    #       promoting this to a helper method it will be easier to
+    #       incorporate this into an ability.
+    #
+    # @see Hyrax::FileSetsController for non-view usage.
+    def workflow_restriction?(object, ability: current_ability)
+      return false if object.nil? # Yup, we may get nil, and there's no restriction on nil
+      return object.workflow_restriction? if object.respond_to?(:workflow_restriction?)
+      return false if ability.can?(:edit, object) || ability.can?(:read, object)
+      return object.suppressed? if object.respond_to?(:suppressed?)
+      false
+    end
+  end
+end
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