chatrooms | Chatroom API made with django | REST library

I have faced a similar issue with TypeORM when working on a NestJS project.

The issue is happening because you don't have any chatRoomId field defined in your Message Entity (class Message). So, when TypORM maps your message data with the Message entity, it doesn't set the chatRoomId.

There are two solutions to fix this problem.

1. You can add the chatRoomId field in your Message entity and now you will be able to send the field when saving the message data.

e.g.

Your room entity does not have a users array because you don't query the relation when using the repository.

const room = await this.chatRepo.findOne(roomid, { relations: ['users'] }); should fix this.

The way you access the navigation params is wrong. This has changed in react-navigation version 5. You need to access the route params through the route object as follows.

The issue was that when stringifying my JSON Object, the sender attribute was a defined User type that for whatever reason, was causing issues and perhaps not being correctly handled by my Go backend API.

The following code with sender: sender is the culprit, as the sender value is a User object.

The Firestore SDK keeps a local copy of:

• All data that you have an active listener for.
• All pending writes.

In addition, if offline persistence is enabled, it also keeps a local copy of data that your code has recently read.

When you make a write operation, the SDK:

1. Writes your operation to its queue of pending writes.
2. Fires an event for any local listeners.
3. Tries to synchronize the pending write with the server.

Steps 1 and 2 always happen, regardless of whether you are online or offline. Only step 3 won't complete immediately when you are offline.

What about adding a UUID field to your model to create a universally unique identifiers and then using that as the path variable instead?

Something like this:

To use array-contains on an array of objects, you must know the entire object. It seems feasible in this case if you know UID of current user and role as well. Try running the following query:

The easiest solution is to use the error message that includes a direct link to create the missing index in the Firebase console.

As explained here in the doc, "If you attempt a compound query with a range clause that doesn't map to an existing index, you receive an error".

So, catch the error in your code (normally with if (snapshot.hasError), see here in the FlutterFire doc), get the message and open the link in your preferred browser (with being logged to your Firebase project).

Other solutions are listed in the doc page referred to above, but again, with the link in the error message it's really easy!

You have two variables, first, you declared messageInfoMap somewhere (you don't show where but I presume all this code is inside the same class?)

Then, your function takes three arguments, the third argument is also called messageInfoMap, and its type is Map, which of course is the same as Map. I presume you are passing the first variable as an argument on the function? If that is the case, you just have to make sure you make the second variable a map of string, dynamic: