add activity field to additional hours on review form

app/controllers/semester_process_volunteers_controller.rb

@@ -101,7 +101,7 @@ class SemesterProcessVolunteersController < ApplicationController
     params.require(:semester_process_volunteer).permit(
       volunteer_attributes: [:id, :waive, :iban, :bank],
       semester_feedbacks_attributes: [[semester_feedback: [:mission, :goals, :achievements, :future, :comments, :conversation, :spv_mission_id]],
-                                     [hour: [:hours, :spv_mission_id]]]
+                                     [hour: [:hours, :spv_mission_id, :activity]]]
     )
   end
 

app/views/semester_process_volunteers/review_semester.html.slim

@@ -28,11 +28,13 @@
 
     = spvm.simple_fields_for :hour, Hour.new do |hf|
       = hf.input :spv_mission_id, as: :hidden, input_html: { value: spvm.object.id}
+      h4.m-b-20.m-t-20= "Restliche Stunden in diesem Semester (#{@semester_process_volunteer.semester_period})"
       .row
-        .col-xs-12= hf.input :hours, label: "Restliche Stunden in diesem Semester #{@semester_process_volunteer.semester_period}",
+        .col-xs-2= hf.input :hours, label: 'Stunden',
                                     input_html: { value: f.object.hours == 0 ? '' : f.object.hours, min: 0},
                                     required: false,
                                     disabled: disabled
+        .col-xs-10= hf.input :activity, disabled: disabled
 
   h3 Spesen
   = f.simple_fields_for :volunteer, @volunteer do |vf|