add bookmarks view

app/routes/hyperapi.py

@@ -1,6 +1,6 @@
 from flask import Blueprint, render_template, request, url_for
 from ..auth import get_active_user, is_logged_in, hard_login_required
-from ..models import BookmarkCollections, BookmarkedPosts, BookmarkedThreads
+from ..models import BookmarkCollections, BookmarkedPosts, BookmarkedThreads, Threads, Posts
 from functools import wraps
 
 bp = Blueprint('hyperapi', __name__, url_prefix='/hyperapi/')
@@ -24,6 +24,14 @@ def get_bookmark_dropdown():
     except ValueError:
         return 'error', 400
     is_thread = concept_kind == 'thread'
+    if is_thread:
+        target_thread = Threads.find({'id': concept_id})
+        if not target_thread:
+            return 'This thread no longer exists. Please refresh the page.', 404
+    else:
+        target_post = Posts.find({'id': concept_id})
+        if not target_post:
+            return 'This post no longer exists. Please refresh the page.', 404
     collections = BookmarkCollections.get_for_user(user.id)
     in_collection = None
     note = ''
@@ -54,6 +62,9 @@ def bookmark_thread():
             bt.delete()
         return '', 204
 
+    if not Threads.find({'id': thread_id}):
+        return 'error', 404
+
     target_collection = BookmarkCollections.find({'id': target_collection_id})
     note = request.form.get('note', '')
     if not target_collection:
@@ -91,6 +102,9 @@ def bookmark_post():
             bp.delete()
         return '', 204
 
+    if not Posts.find({'id': post_id}):
+        return 'error', 404
+
     target_collection = BookmarkCollections.find({'id': target_collection_id})
     note = request.form.get('note', '')
     if not target_collection: