Return flag to indicate user reacted to a page or not

src/interactions/services/reactions.py

@@ -51,3 +51,7 @@ def get_user_reaction(user: User, page: Page) -> ReactionType | None:
     if reaction:
         return reaction.type
     return None
+
+
+def has_user_reacted(user: User, page: Page) -> bool:
+    return Reaction.objects.filter(user=user, page=page).exists()

src/interactions/test/services/test_reactions.py

@@ -6,6 +6,7 @@
     get_reaction_count,
     get_reaction_counts,
     get_user_reaction,
+    has_user_reacted,
 )
 
 ALL_REACTION_TYPES = ReactionType.values
@@ -111,3 +112,13 @@ def test_get_user_reaction(user, news_page, create_reaction):
 @pytest.mark.django_db
 def test_get_user_reaction_no_page_found(user, news_page):
     assert get_user_reaction(user, news_page) is None
+
+
+@pytest.mark.django_db
+def test_has_user_not_reacted(user, news_page):
+    assert has_user_reacted(user, news_page) is False
+
+
+@pytest.mark.django_db
+def test_has_user_reacted(user, news_page, create_reaction):
+    assert has_user_reacted(user, news_page) is True