Fix lint errors

app/controllers/ajax/question_controller.rb

@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 
-require "digest"
 require "errors"
 require "use_case/question/create"
 require "use_case/question/create_followers"
@@ -44,18 +43,18 @@ class Ajax::QuestionController < AjaxController
 
     if user_signed_in? && params[:rcpt] == "followers"
       UseCase::Question::CreateFollowers.call(
-        source_user_id:    current_user.id,
-        content:           params[:question],
+        source_user_id: current_user.id,
+        content:        params[:question],
         author_identifier: AnonymousBlock.get_identifier(request.ip)
       )
       return
     end
 
     UseCase::Question::Create.call(
-      source_user_id:    user_signed_in? ? current_user.id : nil,
-      target_user_id:    params[:rcpt],
-      content:           params[:question],
-      anonymous:         params[:anonymousQuestion],
+      source_user_id: user_signed_in? ? current_user.id : nil,
+      target_user_id: params[:rcpt],
+      content:        params[:question],
+      anonymous:      params[:anonymousQuestion],
       author_identifier: AnonymousBlock.get_identifier(request.ip)
     )
   end

lib/use_case/question/create.rb

@@ -42,10 +42,8 @@ module UseCase
           raise Errors::BadRequest.new("anonymous must be set to true")
         end
 
-        if !target_user.privacy_allow_anonymous_questions && anonymous
-          # The target user does not want questions from strangers
-          raise Errors::Forbidden.new("no anonymous questions allowed")
-        end
+        # The target user does not want questions from strangers
+        raise Errors::Forbidden.new("no anonymous questions allowed") if !target_user.privacy_allow_anonymous_questions && anonymous
       end
 
       def check_blocks
@@ -62,7 +60,7 @@ module UseCase
           return
         end
 
-        source_user.increment!(:asked_count)
+        source_user.increment(:asked_count)
       end
 
       def filtered?(question)

lib/use_case/question/create_followers.rb

@@ -29,7 +29,7 @@ module UseCase
       private
 
       def increment_asked_count
-        source_user.increment!(:asked_count)
+        source_user.increment(:asked_count)
       end
 
       def source_user

spec/controllers/ajax/question_controller_spec.rb

@@ -48,7 +48,7 @@ describe Ajax::QuestionController, :ajax_controller, type: :controller do
       include_examples "returns the expected response"
     end
 
-    shared_examples "enqueues a QuestionWorker job" do |expected_rcpt|
+    shared_examples "enqueues a QuestionWorker job" do |_expected_rcpt|
       it "enqueues a QuestionWorker job" do
         allow(QuestionWorker).to receive(:perform_async)
         subject