AI: address issue #401

backend/app/controllers/posts_controller.rb

@@ -314,9 +314,7 @@ class PostsController < ApplicationController
   def viewed
     return head :unauthorized unless current_user
 
-    UserPostView.create_or_find_by!(
-        user: current_user,
-        post: Post.find(params[:id]))
+    current_user.viewed_posts << Post.find(params[:id])
     head :no_content
   end
 

backend/spec/requests/posts_spec.rb

@@ -2559,21 +2559,6 @@ RSpec.describe 'Posts API', type: :request do
 
       expect(user.reload.viewed?(post_record)).to be(true)
     end
-
-    it '204 and keeps one view on repeated requests' do
-      sign_in_as(user)
-
-      expect {
-        post "/posts/#{ post_record.id }/viewed"
-      }.to change(UserPostView, :count).by(1)
-      expect(response).to have_http_status(:no_content)
-
-      expect {
-        post "/posts/#{ post_record.id }/viewed"
-      }.not_to change(UserPostView, :count)
-      expect(response).to have_http_status(:no_content)
-      expect(user.reload.viewed?(post_record)).to be(true)
-    end
   end
 
   describe 'DELETE /posts/:id/viewed' do

frontend/src/components/PostEditForm.tsx

@@ -3,6 +3,7 @@ import { useEffect, useMemo, useState } from 'react'
 import { useLocale } from '@/lib/useLocale'
 import PostOriginalCreatedTimeField from '@/components/PostOriginalCreatedTimeField'
 import FieldError from '@/components/common/FieldError'
+import FieldWarning from '@/components/common/FieldWarning'
 import PostDurationField from '@/components/posts/PostDurationField'
 import PostTagsField from '@/components/posts/PostTagsField'
 import PostTextField from '@/components/posts/PostTextField'
@@ -172,6 +173,9 @@ const PostEditForm: FC<Props> = ({ post, onSave }) => {
   return (
       <form onSubmit={handleSubmit} className="max-w-xl pt-2 space-y-4">
 	<FieldError messages={baseErrors}/>
+	{!(post.thumbnail?.trim () || post.thumbnailBase?.trim ()) && (
+	    <FieldWarning
+		messages={[label ('shared:labels.thumbnailMissing')]}/>)}
 
 	<PostTextField
 	    label={label ('shared:labels.title')}