More stuff

app/assets/javascripts/activities.coffee

 
 @filterparticipants = (e) ->
   show = e.target.value
-  if (show != 'all')
+  if (show == 'all')
+    $('.participant-row').show()
+    @updatecounts()
+    this.subgroupfilter = null
+  else if (show == 'withoutgroup')
+    selector = "tr.participant-row.success:not([data-subgroup-id])"
+    $('.participant-row').hide()
+    $(selector).show()
+    @updatecounts()
+    this.subgroupfilter = show
+  else
     selector = "[data-subgroup-id=" + e.target.value + "]"
     $('.participant-row').hide()
     $(selector).show()
     @updatecounts(show)
     this.subgroupfilter = show
-  else
-    $('.participant-row').show()
-    @updatecounts()
-    this.subgroupfilter = null
 
 @updatecounts = (subgroupid) ->
   selector = 'tr.countable.participant-row'

app/controllers/activities_controller.rb

     @subgroup_ids = @activity.subgroups
       .order(name: :asc)
       .pluck(:name, :id)
-    @subgroup_ids.prepend( ['*' , 'all'] )
+    @subgroup_ids.prepend( [I18n.t('activities.subgroups.filter_nofilter'), 'all'] )
+    @subgroup_ids.append( [I18n.t('activities.subgroups.filter_nogroup'), 'withoutgroup'] )
   end
 
   # GET /activities/new

config/locales/activities/en.yml

         subject: "You have been assigned to subgroup %{subgroup} for %{activity}"
         yoursubgroupis: "The upcoming activity %{activity} uses subgroups, and you have been assigned to subgroup %{subgroup}."
         subgroupmembers: "The other people in this subgroup are: %{others}"
+        noothersinsubgroup: "There are no other people in this subgroup. :("
         allsubgroups: "All subgroups (including yours):"
         cannotdecline: "This email was sent when the deadline expired. If you find you cannot attend, please contact the Drerrie, or one of the organisers (%{organizers})."
 
       created: 'Subgroup created.'
       create_failed: 'Could not create subgroup!'
 
+      edit: 'Edit subgroup division'
+      edited: 'Subgroup division updated.'
+
       update: 'Update subgroup'
       updated: 'Subgroup updated.'
       update_failed: 'Could not update subgroup!'
       destroy: 'Destroy subgroup'
       destroyed: 'Subgroup destroyed.'
       none: 'There are no subgroups.'
+
+      filter_nogroup: 'Attending, no subgroup'
+      filter_nofilter: 'Show everyone'
+
+      only_present_people: "Only people who will attend are listed, because people who don't cannot be in a subgroup."

config/locales/activities/nl.yml

         subject: "Je bent automatisch aangemeld voor %{activity}"
         havenot_responded: "Je hebt nog niet aangegeven of je bij %{activity} kunt zijn. Omdat we ervan uitgaan dat je er bent als je niks aangeeft, is je reactie automatisch op 'aanwezig' gezet."
         if_cannot: "Als je toch niet aanwezig kunt zijn, kan je dit tot %{deadline} aangeven via de volgende link:"
+
       subgroup_notification:
         subject: "Je bent ingedeeld in subgroep %{subgroup} voor %{activity}"
         yoursubgroupis: "De aankomende opkomst %{activity} gebruikt subgroepen, en jij bent ingedeeld in subgroep %{subgroup}."
       destroyed: 'Subgroep verwijderd.'
       none: 'Er zijn geen subgroepen.'
 
+      filter_nogroup: 'Aangemeld, geen groep'
+      filter_nofilter: 'Toon iedereen'
+
       only_present_people: 'Je ziet alleen maar mensen die zijn aangemeld in dit overzicht, omdat mensen die zijn afgemeld niet in een subgroep kunnen zitten.'