ChatService | ChatService | Testing library
kandi X-RAY | ChatService Summary
kandi X-RAY | ChatService Summary
ChatService (SignalR).
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QUESTION
im working in chat project angular with websocket , let me show you the architecture of my project , so i create a module named chatting contains the list of users whene i select one of them another component opened, this component named message.
i want to send the id with the message to the backend by service , the id obtained from URL with router.params['id'] in the message.ts .
how can i transfer this id to the service.ts ?
PS i have do a trial with the methods of the websocket but doesn't work
------ My Trial ------
message.component.ts
...ANSWER
Answered 2021-Jun-05 at 18:28It depends how you set it up, are you using service directly or store (ie.: https://ngrx.io or https://rxjs.dev).
If you use the websocket service directly you need to inject it on constructor and call the method on your message component init, maybe have a listener on the router for changes.
In case you use store you can create a Subject (https://rxjs.dev/guide/subject) in your websocket and subscribe to it in a reactive way so every new data is send to backend.
Edit note: I included the user id is passed within the message, if is a different id (ie.: chat id) and you need it for initiate a connection, then you have to change your service to have a setup method that you can pass the id so it closes and reopen with new id.
QUESTION
I wrote a chat App but the Problem is that if another User writes Me the Message doesnt load immediatly.
Only if i scroll up and then down.
If i write a Message it gets updated immediatly.
I use Firebase and Nativescript.
TS:
...ANSWER
Answered 2021-Jun-04 at 13:41The problem when the UI doesn't get updated when a value change is coming from a library is because it runs outside of Angular's zone, which explains you having to scroll to trigger a UI update.
A fix for that is to wrap wherever you are making the call to update the array your ListView inside an ngZone to make sure its running within Angular's zone.
QUESTION
Let's say I am building a simple chat app using gRPC with the following .proto:
ANSWER
Answered 2021-May-11 at 05:55I figured out an efficient way to do it. The key is to use the AsyncIO API. Now my SubscribeToChats function can be an async generator, which makes things much easier.
Now I can use something like an asyncio Queue, which my function can await on in a while loop. Similar to this:
QUESTION
I am trying to create an application using socket with Angular and node.js as backend application. In the backend I can see that connection is getting established/disconnected but not able to read events.
this is my server side node.js code:
...ANSWER
Answered 2021-Apr-25 at 16:11use socket-io-client with version 2.3.1 and try.
QUESTION
i am trying to make a chat an angular node.js real-time chat application i am using socket.io with angular and a nodejs backend
Server Side ...ANSWER
Answered 2021-Feb-21 at 12:51turns out issue was server side had to change
io.emit(message);
to io.emit('new-message',message)
QUESTION
I am developing a chat application with Stomp and Rabbitmq on Spring Boot.
When a client sends a message to the server (Spring Boot), the server saves the message to a database and then sends the message to its recipient.
What I would like to do is to send a RECEIPT frame with message-id to the clients when they send a message to let them know that their messages have been saved to the database.
I can send the RECEIPT frame from the afterMessageHandled() of ExecutorChannelInterceptor class. But it sends the same RECEIPT frame multiple times like three times.
So the clients receive the same RECEIPT frame three times for a single message.
This is my ChannelInterceptor which saves the message to the database in presend()
ANSWER
Answered 2021-Jan-22 at 04:10I found out that each call to afterHanldedMessage() comes with different handlers. So you can do what you want based on different handlers. You might want to do If(handler instanceof SomeHandlerClass).
QUESTION
I'm at least trying to develop a chatbot for an exhibition the error is as follows:
src/app/chat/chat.component.ts:32:9 - error TS2322: Type 'undefined' is not assignable to type 'string'. 32 this.message = undefined; ~~~~~~~~~~~~
and the section of code is seen below
...ANSWER
Answered 2020-Dec-08 at 17:30You could assign an empty string :
QUESTION
Q: Why aren't my filter functions updating the children when the main source of data is modified?
I have an array of objects that gets divvied between several child components. Each of the child components takes in an input in the template that is just a .filter() of the array of data, depending on what that child needs.
Namely a solution to make it so there is one source of data that I can update values of when need be that automatically gets passed to all the children without the need for a billion functions everywhere
Problem is, however, it doesn't seem like my functions are filtering after the value in question is updated? I can verify that the central source of data got updated.
Log here below is the new value, the old value, and the value at the index once it is replaced, which should and is the same as the second value (See the unread count property in this example)
Main source of data is gotten with a behavior subject in a service
...ANSWER
Answered 2020-Nov-30 at 01:13Your issue is that sortByAssignmentStatus doesn't "run" everytime allchats changes. Angular can't magically know which methods you intend to "watch" and run everytime data changes and which ones are fine being static. But luckily, they do provide a mechanism to do exactly that. Pipes.
You need to change sortByAssignmentStatus to a pipe. For example :
QUESTION
i'm adapting a basic SignalR Chat function.
The broad context: when a user sends a message, the message get send, but the empty textarea (apart from placeholder) from which is has been sent, now has a event.currentTarget.defaultValue, consisting of a string of about 13 white spaces. Ive tried correcting it by setting it to null or '' but still the whitespace stays, hides the placeholder (offcourse).
The original inputfield is a string, in my version i've made a behaviourSubject of it, and added an observable of that behavioursubject
...ANSWER
Answered 2020-Nov-20 at 14:57Found what was happening! both (input)="textinputreceived($event)" and (keydown.enter)="sendTextMessage($event)"> trigger a 'enter press', so in debug mode, enterpress get registered, text cleared, message send. If not in debug the enterpress is probably registered after the field has been cleared, hence the whitespace.
simple solution: event.preventDefault() on both methods!
QUESTION
I have the following scheduler:
...ANSWER
Answered 2020-Nov-04 at 13:25There is no way to force a function to call its callback on a particular thread unless the library gives you the option to do it. Your successBlock and errorBlock closures will be called on whatever thread QBRequest.logIn wants to call them on and there's nothing you can do about that.
That said, the .observeOn(_:) operator will transfer the execution to a different thread so in your last code example, your onNext and onError closures will be executed on the self.scheduler thread.
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