#Doble queries

26 messages · Page 1 of 1 (latest)

atomic mist
#

I have a chat app, and I want you to be able to fetch messages from two chats at the same time (have like a divided screen), the probel is that when I open the second conversation, it fetches the same messages as the first one

digital fieldBOT
#

Hi @atomic mist. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

To fetch messages from two different chats simultaneously in a Convex-based chat app, you need to ensure that you're passing the correct arguments to your query function for each chat. The issue you're experiencing where both conversations show the same messages likely stems from using the same query arguments for both.

Here's how you can approach this:

  1. Define a query function that accepts a chat ID or channel ID as an argument:
// convex/messages.ts
export const list = query({
  handler: async (ctx, { channel }: { channel: Id<"channels"> }) => {
    return await ctx.db.query("messages")
      .filter(q => q.eq(q.field("channel"), channel))
      .order("desc")
      .take(100);
  },
});
  1. In your React component, use separate useQuery calls for each chat, passing the respective chat/channel IDs:
import { useQuery } from "convex/react";
import { api } from "../convex/_generated/api";

function DualChatView({ chat1Id, chat2Id }) {
  const messages1 = useQuery(api.messages.list, { channel: chat1Id });
  const messages2 = useQuery(api.messages.list, { channel: chat2Id });

  return (
    <div>
      <ChatView messages={messages1} />
      <ChatView messages={messages2} />
    </div>
  );
}

By using separate useQuery calls with different arguments, you ensure that each chat fetches its own messages. Convex's React integration handles the reactivity and consistency for you, so both chats will update independently when their respective messages change Client > Convex React > Fetching data (https://docs.convex.dev/client/react#fetching-data).

#

Remember that Convex provides automatic caching and deduplication of queries, so you don't need to worry about performance implications of making multiple similar queries Stack > > What is Sync? > Now: application state sync platforms > 4. End-to-end cache management (https://stack.convex.dev/sync#4-end-to-end-cache-management-4).

If you're still experiencing issues after implementing this approach, double-check that you're passing different chat1Id and chat2Id values to the DualChatView component.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@atomic mist Kapa.ai is still learning and improving, please let me know how I did by reacting below.

atomic mist
#

@digital field I am using a different approach. I ahve a conversation component (i pass the conversation ID) and there I do the fetch. SO basically I am rendering two conversation components with different ids. BUt still getting the same messages

digital fieldBOT
#

Let me check the knowledge base for you again. One moment! :books:

#

I understand you're using a different approach with separate conversation components, each receiving its own conversation ID. However, you're still encountering the issue of getting the same messages for both conversations. Let's troubleshoot this issue based on the Convex-specific information we have.

  1. First, make sure your query function in the backend is correctly using the conversation ID to filter messages. It should look something like this:
// convex/messages.ts
export const getConversationMessages = query({
  args: { conversationId: v.id("conversations") },
  handler: async (ctx, args) => {
    return await ctx.db
      .query("messages")
      .withIndex("by_conversationId", (q) => q.eq("conversationId", args.conversationId))
      .order("desc")
      .take(100);
  },
});
  1. In your Conversation component, ensure you're using the useQuery hook correctly:
import { useQuery } from "convex/react";
import { api } from "../convex/_generated/api";

function Conversation({ conversationId }) {
  const messages = useQuery(api.messages.getConversationMessages, { conversationId });

  // Render messages here
}

If you're still getting the same messages for both conversations, there might be a few reasons for this:

  1. Incorrect Index: Make sure you have an index on the conversationId field in your messages table schema Tutorial > 2: Convex and your app > Implement a new feature > Find out who liked what > Index likes by message ID (https://docs.convex.dev/tutorial/client#index-likes-by-message-id).

  2. Query Caching: Convex has automatic query caching. To ensure you're getting fresh data, you might want to add a useEffect to refetch data when the conversationId changes:

# 
import { useQuery } from "convex/react";
import { api } from "../convex/_generated/api";
import { useEffect } from "react";

function Conversation({ conversationId }) {
  const messagesQuery = useQuery(api.messages.getConversationMessages, { conversationId });

  useEffect(() => {
    // This will cause the query to refetch when conversationId changes
    messagesQuery.refetch();
  }, [conversationId]);

  // Render messages here
}
  1. Client-side Filtering: If the above doesn't work, you could try client-side filtering as a temporary solution:
function Conversation({ conversationId }) {
  const allMessages = useQuery(api.messages.list);
  
  const conversationMessages = allMessages?.filter(
    message => message.conversationId === conversationId
  ) || [];

  // Render conversationMessages here
}

If none of these solutions work, the issue might be in how you're passing the conversationId to your Conversation components. Double-check that you're indeed passing different IDs to each component.

Remember, Convex queries are reactive by default Stack > > GPT Streaming With Persistent Reactivity > Client "streaming" via subscriptions (https://stack.convex.dev/gpt-streaming-with-persistent-reactivity#client-streaming-via-subscriptions), so once you set up your queries correctly, they should automatically update when the underlying data changes.

If you're still facing issues after trying these solutions, you might want to share more details about your implementation, including your schema definition and how you're setting up the conversations.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@atomic mist Kapa.ai is still learning and improving, please let me know how I did by reacting below.

atomic mist
#

@digital field This is my approach to fetching hte messages:
import { usePaginatedQuery } from 'convex/react';

import { api } from '../../../../convex/_generated/api';
import { Id } from '../../../../convex/_generated/dataModel';

const BATCH_SIZE = 20;

type UseGetMessagesProps = {
teamId: Id<'teams'>;
channelId?: Id<'channels'>;
conversationId?: Id<'conversations'>;
parentMessageId?: Id<'messages'>;
};

export type GetMessagesReturnType =
(typeof api.messages.getMessages._returnType)['page'];

export const useGetMessages = ({
teamId,
channelId,
conversationId,
parentMessageId,
}: UseGetMessagesProps) => {
const { results, status, loadMore } = usePaginatedQuery(
api.messages.getMessages,
{ teamId, channelId, conversationId, parentMessageId },
{ initialNumItems: BATCH_SIZE }
);

return { results, status, loadMore: () => loadMore(BATCH_SIZE) };
};

digital fieldBOT
#

Let me check the knowledge base for you again. One moment! :books:

#

Thank you for sharing your approach to fetching messages using Convex's usePaginatedQuery hook. This is a good start, but there might be a few things to consider to resolve the issue of getting the same messages for different conversations.

  1. First, make sure your getMessages query function in the backend is correctly using all the provided arguments to filter messages. It should look something like this:
// convex/messages.ts
export const getMessages = query({
  args: {
    teamId: v.id("teams"),
    channelId: v.optional(v.id("channels")),
    conversationId: v.optional(v.id("conversations")),
    parentMessageId: v.optional(v.id("messages")),
    paginationOpts: paginationOptsValidator,
  },
  handler: async (ctx, args) => {
    let messagesQuery = ctx.db
      .query("messages")
      .filter((q) => q.eq(q.field("teamId"), args.teamId));

    if (args.channelId) {
      messagesQuery = messagesQuery.filter((q) => q.eq(q.field("channelId"), args.channelId));
    }
    if (args.conversationId) {
      messagesQuery = messagesQuery.filter((q) => q.eq(q.field("conversationId"), args.conversationId));
    }
    if (args.parentMessageId) {
      messagesQuery = messagesQuery.filter((q) => q.eq(q.field("parentMessageId"), args.parentMessageId));
    }

    return await messagesQuery
      .order("desc")
      .paginate(args.paginationOpts);
  },
});
  1. Ensure that you have the necessary indexes in your schema for efficient querying Database > Paginated Queries > Writing paginated query functions (https://docs.convex.dev/database/pagination#writing-paginated-query-functions):
# 
// convex/schema.ts
export default defineSchema({
  messages: defineTable({
    teamId: v.id("teams"),
    channelId: v.optional(v.id("channels")),
    conversationId: v.optional(v.id("conversations")),
    parentMessageId: v.optional(v.id("messages")),
    // other fields...
  })
    .index("by_team", ["teamId"])
    .index("by_channel", ["teamId", "channelId"])
    .index("by_conversation", ["teamId", "conversationId"])
    .index("by_parent", ["teamId", "parentMessageId"]),
});
  1. In your React component, make sure you're passing different conversationId values to the useGetMessages hook for different conversations:
function ConversationView({ teamId, conversationId }) {
  const { results, status, loadMore } = useGetMessages({ teamId, conversationId });

  // Render messages here
}
  1. If you're still getting the same messages, you might want to add a key prop to your component to force a re-render when the conversationId changes:
function DualConversationView({ teamId, conversation1Id, conversation2Id }) {
  return (
    <div>
      <ConversationView key={conversation1Id} teamId={teamId} conversationId={conversation1Id} />
      <ConversationView key={conversation2Id} teamId={teamId} conversationId={conversation2Id} />
    </div>
  );
}
  1. Remember that usePaginatedQuery is reactive Database > Paginated Queries > Paginating within React Components (https://docs.convex.dev/database/pagination#paginating-within-react-components), so your components should automatically update when the underlying data changes.
#

If you're still experiencing issues after implementing these suggestions, the problem might be in how the conversationId is being passed to your components, or there might be an issue with the data in your Convex database. Double-check that you're indeed passing different conversationId values for different conversations, and verify that the messages in your database are correctly associated with their respective conversations.

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:

#

@atomic mist Kapa.ai is still learning and improving, please let me know how I did by reacting below.

atomic mist
#

@digital field I added the key and still having the same issue

digital fieldBOT
#

Let me check the knowledge base for you again. One moment! :books:

#

I apologize that adding the key prop didn't resolve the issue. Let's try to dig deeper into the problem. Since you're still experiencing the same messages appearing for different conversations, we need to investigate further.

Here are a few more things to check:

  1. Verify the query arguments: Make sure that the conversationId you're passing to useGetMessages is actually different for each conversation. You can add some console logs to verify this:
console.log('Fetching messages for conversation:', conversationId);
const { results, status, loadMore } = useGetMessages({ teamId, conversationId });
console.log('Fetched messages:', results);
  1. Check the backend query: Ensure that your getMessages query in the backend is correctly using the conversationId to filter messages. You can add logging in your Convex function to verify the arguments and the query results:
export const getMessages = query({
  // ...
  handler: async (ctx, args) => {
    console.log('getMessages args:', args);
    // ... your query logic ...
    const results = await messagesQuery.order("desc").paginate(args.paginationOpts);
    console.log('getMessages results:', results);
    return results;
  },
});

  1. Verify data in the database: Use the Convex dashboard to check if the messages in your database are correctly associated with their respective conversationIds.

  2. Force refetch: You can try to force a refetch of the query when the conversationId changes:

import { usePaginatedQuery } from 'convex/react';
import { useEffect } from 'react';

function ConversationView({ teamId, conversationId }) {
  const query = usePaginatedQuery(
    api.messages.getMessages,
    { teamId, conversationId },
    { initialNumItems: BATCH_SIZE }
  );
#

useEffect(() => {
query.refetch();
}, [conversationId]);

// ... rest of your component
}


5. **Check for caching issues**: While Convex handles caching automatically, you might want to try clearing your browser cache or using an incognito window to rule out any client-side caching issues.

6. **Unique identifiers**: Ensure that your `conversationId`s are indeed unique for each conversation. If they're not, this could explain why you're seeing the same messages.

If none of these steps resolve the issue, it's possible that there might be a more complex problem at play. In this case, I would recommend reaching out to Convex support directly through their **Discord channel** (<https://discord.com/invite/q5R5VT6rry>) or **GitHub discussions** (<https://github.com/get-convex/convex/discussions>). They have dedicated support staff who can help troubleshoot more complex issues specific to your implementation.

Remember, Convex is designed to handle reactivity and caching automatically **Stack >  > What is Sync? > Now: application state sync platforms > 4. End-to-end cache management** (<https://stack.convex.dev/sync#4-end-to-end-cache-management-4>), so once your queries and data are set up correctly, you shouldn't need to manually manage these aspects.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------
#

@atomic mist Kapa.ai is still learning and improving, please let me know how I did by reacting below.

atomic mist
#

@digital field I tried adding the conversationId, and I am getting different ids on each

digital fieldBOT
#

Let me check the knowledge base for you again. One moment! :books:

#

I'm glad to hear you're getting different conversation IDs for each conversation. This is a step in the right direction. Since you're still experiencing issues despite having different conversation IDs, let's focus on troubleshooting the query and data retrieval process.

Here are some steps to further diagnose the problem:

  1. Log query arguments and results: Add console logs in your React component to verify the arguments being passed to the query and the results received:
const { results, status, loadMore } = useGetMessages({ teamId, conversationId });
console.log('Query args:', { teamId, conversationId });
console.log('Query results:', results);

This will help you confirm that different conversation IDs are indeed being used for each query and show you what data is being returned.

  1. Check the backend query: Ensure your getMessages query in the Convex backend is correctly using the conversationId to filter messages. Add logging in your Convex function:
export const getMessages = query({
  // ...
  handler: async (ctx, args) => {
    console.log('getMessages args:', args);
    let messagesQuery = ctx.db
      .query("messages")
      .filter((q) => q.eq(q.field("conversationId"), args.conversationId));
    
    const results = await messagesQuery.order("desc").paginate(args.paginationOpts);
    console.log('getMessages results:', results);
    return results;
  },
});

You can view these logs in the Convex dashboard to verify that the correct arguments are being received and the appropriate results are being returned.

  1. Verify data in the database: Use the Convex dashboard to check if the messages in your database are correctly associated with their respective conversationIds. This will help you confirm that the data is stored correctly.
#
  1. Force refetch on ID change: Implement a useEffect hook to force a refetch when the conversationId changes:
import { useEffect } from 'react';

function ConversationView({ teamId, conversationId }) {
  const query = usePaginatedQuery(
    api.messages.getMessages,
    { teamId, conversationId },
    { initialNumItems: BATCH_SIZE }
  );

  useEffect(() => {
    query.refetch();
  }, [conversationId, query]);

  // ... rest of your component
}

This ensures that the query is re-run whenever the conversationId changes Client > React > Optimistic Updates > Complex example (https://docs.convex.dev/client/react/optimistic-updates#complex-example).

  1. Check for race conditions: If you're rapidly switching between conversations, there might be a race condition where the results of a previous query are displayed before the new query completes. To mitigate this, you can use a useEffect hook to track the current conversationId and only display results that match:
import { useState, useEffect } from 'react';

function ConversationView({ teamId, conversationId }) {
  const [currentId, setCurrentId] = useState(conversationId);
  const { results, status, loadMore } = useGetMessages({ teamId, conversationId: currentId });

  useEffect(() => {
    setCurrentId(conversationId);
  }, [conversationId]);

  // Only display results if they match the current conversation ID
  const displayResults = currentId === conversationId ? results : null;

  // ... render your component using displayResults
}
#

If you're still facing issues after implementing these suggestions, it might be helpful to share more details about your implementation, including your schema definition and how you're setting up the conversations. The Convex team is also available to help with more complex issues through their Discord support channel (https://discord.com/invite/q5R5VT6rry).

Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: