enh: message reaction user names

backend/open_webui/models/messages.py

@@ -5,7 +5,7 @@ from typing import Optional
 
 from open_webui.internal.db import Base, get_db
 from open_webui.models.tags import TagModel, Tag, Tags
-from open_webui.models.users import Users, UserNameResponse
+from open_webui.models.users import Users, User, UserNameResponse
 from open_webui.models.channels import Channels, ChannelMember
 
 
@@ -100,7 +100,7 @@ class MessageForm(BaseModel):
 
 class Reactions(BaseModel):
     name: str
-    user_ids: list[str]
+    users: list[dict]
     count: int
 
 
@@ -389,17 +389,30 @@ class MessageTable:
 
     def get_reactions_by_message_id(self, id: str) -> list[Reactions]:
         with get_db() as db:
-            all_reactions = db.query(MessageReaction).filter_by(message_id=id).all()
+            # JOIN User so all user info is fetched in one query
+            results = (
+                db.query(MessageReaction, User)
+                .join(User, MessageReaction.user_id == User.id)
+                .filter(MessageReaction.message_id == id)
+                .all()
+            )
 
             reactions = {}
-            for reaction in all_reactions:
+
+            for reaction, user in results:
                 if reaction.name not in reactions:
                     reactions[reaction.name] = {
                         "name": reaction.name,
-                        "user_ids": [],
+                        "users": [],
                         "count": 0,
                     }
-                reactions[reaction.name]["user_ids"].append(reaction.user_id)
+
+                reactions[reaction.name]["users"].append(
+                    {
+                        "id": user.id,
+                        "name": user.name,
+                    }
+                )
                 reactions[reaction.name]["count"] += 1
 
             return [Reactions(**reaction) for reaction in reactions.values()]

src/lib/components/channel/Messages.svelte

@@ -197,8 +197,8 @@
 								const reaction = m.reactions.find((reaction) => reaction.name === name);
 
 								if (reaction) {
-									reaction.user_ids = reaction.user_ids.filter((id) => id !== $user?.id);
-									reaction.count = reaction.user_ids.length;
+									reaction.users = reaction.users.filter((u) => u.id !== $user?.id);
+									reaction.count = reaction.users.length;
 
 									if (reaction.count === 0) {
 										m.reactions = m.reactions.filter((r) => r.name !== name);
@@ -224,12 +224,12 @@
 									const reaction = m.reactions.find((reaction) => reaction.name === name);
 
 									if (reaction) {
-										reaction.user_ids.push($user?.id);
-										reaction.count = reaction.user_ids.length;
+										reaction.users.push({ id: $user?.id, name: $user?.name });
+										reaction.count = reaction.users.length;
 									} else {
 										m.reactions.push({
 											name: name,
-											user_ids: [$user?.id],
+											users: [{ id: $user?.id, name: $user?.name }],
 											count: 1
 										});
 									}

src/lib/components/channel/Messages/Message.svelte

@@ -398,11 +398,44 @@
 						<div>
 							<div class="flex items-center flex-wrap gap-y-1.5 gap-1 mt-1 mb-2">
 								{#each message.reactions as reaction}
-									<Tooltip content={`:${reaction.name}:`}>
+									<Tooltip
+										content={$i18n.t('{{NAMES}} reacted with {{REACTION}}', {
+											NAMES: reaction.users
+												.reduce((acc, u, idx) => {
+													const name = u.id === $user?.id ? $i18n.t('You') : u.name;
+													const total = reaction.users.length;
+
+													// First three names always added normally
+													if (idx < 3) {
+														const separator =
+															idx === 0
+																? ''
+																: idx === Math.min(2, total - 1)
+																	? ` ${$i18n.t('and')} `
+																	: ', ';
+														return `${acc}${separator}${name}`;
+													}
+
+													// More than 4 → "and X others"
+													if (idx === 3 && total > 4) {
+														return (
+															acc +
+															` ${$i18n.t('and {{COUNT}} others', {
+																COUNT: total - 3
+															})}`
+														);
+													}
+
+													return acc;
+												}, '')
+												.trim(),
+											REACTION: `:${reaction.name}:`
+										})}
+									>
 										<button
-											class="flex items-center gap-1.5 transition rounded-xl px-2 py-1 cursor-pointer {reaction.user_ids.includes(
-												$user?.id
-											)
+											class="flex items-center gap-1.5 transition rounded-xl px-2 py-1 cursor-pointer {reaction.users
+												.map((u) => u.id)
+												.includes($user?.id)
 												? ' bg-blue-300/10 outline outline-blue-500/50 outline-1'
 												: 'bg-gray-300/10 dark:bg-gray-500/10 hover:outline hover:outline-gray-700/30 dark:hover:outline-gray-300/30 hover:outline-1'}"
 											on:click={() => {
@@ -413,9 +446,9 @@
 										>
 											<Emoji shortCode={reaction.name} />
 
-											{#if reaction.user_ids.length > 0}
+											{#if reaction.users.length > 0}
 												<div class="text-xs font-medium text-gray-500 dark:text-gray-400">
-													{reaction.user_ids?.length}
+													{reaction.users?.length}
 												</div>
 											{/if}
 										</button>