Allow admins and teachers to remove explicit RfC text

app/controllers/request_for_comments_controller.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
 
 class RequestForCommentsController < ApplicationController
+  include CommonBehavior
   before_action :require_user!
-  before_action :set_request_for_comment, only: %i[show mark_as_solved set_thank_you_note]
+  before_action :set_request_for_comment, only: %i[show mark_as_solved set_thank_you_note clear_question]
   before_action :set_study_group_grouping,
     only: %i[index my_comment_requests rfcs_with_my_comments rfcs_for_exercise]
 
@@ -101,6 +102,12 @@ class RequestForCommentsController < ApplicationController
     end
   end
 
+  # POST /request_for_comments/1/clear_question
+  def clear_question
+    authorize!
+    update_and_respond(object: @request_for_comment, params: {question: nil})
+  end
+
   # GET /request_for_comments/1
   # GET /request_for_comments/1.json
   def show

app/policies/request_for_comment_policy.rb

@@ -25,6 +25,10 @@ class RequestForCommentPolicy < ApplicationPolicy
     admin? || author?
   end
 
+  def clear_question?
+    admin? || teacher_in_study_group?
+  end
+
   def edit?
     admin?
   end

app/views/request_for_comments/_admin_menu.html.slim

@@ -1,6 +1,7 @@
 hr
 h5.mt-4 Admin Menu
 ul.text
+  li = link_to "Clear question text (in case of explicit text)", clear_question_request_for_comment_path(id: @request_for_comment.id), method: :post if policy(@request_for_comment).clear_question?
   li = link_to "User's current status of this exercise", statistics_external_user_exercise_path(id: @request_for_comment.exercise_id, external_user_id: @request_for_comment.user_id) if policy(@request_for_comment.exercise).statistics?
   li = link_to "All exercises of this user", statistics_external_user_path(id: @request_for_comment.user_id) if policy(@request_for_comment.user).statistics?
 ul.text

config/routes.rb

@@ -21,6 +21,7 @@ Rails.application.routes.draw do
     member do
       get :mark_as_solved, defaults: {format: :json}
       post :set_thank_you_note, defaults: {format: :json}
+      post :clear_question
     end
   end
   resources :comments, defaults: {format: :json}