Questions tagged [lightning-message-service]
Questions related to the Lightning message service when communicating across DOM between Visualforce pages, Aura components, and Lightning web components, including components in a pop-out utility bar.
63
questions
1
vote
2
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97
views
Incorrect data displayed in lightning datatable
I have a LWC which takes value from 3 input fields and passes the value to a separate component with lightning datatable via LMS. I am able to pass the data for the first time but when I try to repeat ...
- 147
0
votes
0
answers
68
views
When Subscriber placed in record page Lightning Message Service (LMS) not receiving messages
I was trying to implement Lightning Message Service. But for some reason, the message is getting published but not reflected in the subscriber module. It is not throwing any errors not even in the ...
2
votes
1
answer
220
views
Better LWC performance: sibling components with separate wires, or a single service component with a wire that sends data via Message Channel
If you have 10 separate components on the same lightning page that are all using the getRecord wire and retrieving approximately the same subset of fields, is there a performance penalty in comparison ...
- 65
0
votes
1
answer
107
views
Lightning Messaging Service, Send data Bidirectionally using one Messaging Channel
Hi I am trying to send information from Component A to Component X and X to A. I was able to first get the data to send from A to X however upon implementing X to A (which works) A to X no longer ...
- 3
0
votes
1
answer
786
views
Passing data from one LWC to another LWC while navigating to it via Navigation Mixin using Lightning Messaging service Issue
I have a similar problem I would like to navigate to a different LWC Component via Navigation Mixin and pass some data to this component
The first component is a modal and I would like the user to ...
- 15
1
vote
1
answer
583
views
LWC - Remove a specific record Id from an array Of Objects - Update and re-render updated array's data
I am currently working on an LWC project leveraging the Lightning Messaging System to share information between unrelated components all present on the same lightning page.
Here is the main use case:
...
- 23
0
votes
0
answers
85
views
Send and recieve messages between CCP and LWC
I have a iframe Lightning Web Component that needs to be tied to my company's embedded CCP (Contact Control Panel hosted on Amazon Connect). The desired behavior is to post a message to the iframe ...
- 1
0
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0
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356
views
Communicating from Parent to Grandchild LWC
I have tried using LMS and Pubsub methods to communicate from Parent to Grandchild components but was not able to do so (although grandchild to parent works well). I know I can use @api properties to ...
- 21
0
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2
answers
5k
views
How to pass variable value from one LWC component to another without parent child relationship
JS of ProductList Component
import { LightningElement, api, track, wire } from "lwc";
import getProducts from '@salesforce/apex/reviewsController.getProducts';
// import productDetails from '...
3
votes
1
answer
1k
views
What's the benefit of using Custom Event over Lightning Messaging Service? [closed]
Custom Events are used to pass the data from child component to parent component but we can achieve the same functionality with Lightning Messaging Service(LMS). What is the benefit of using custom ...
- 153
7
votes
1
answer
747
views
Refresh LWC when related list is updated or related file is deleted
I have a custom LWC on a record detail page. This LWC displays files related to the record. I cannot use the standard Files related list because I only want to show files of type jpg, jpeg and png.
To ...
- 71
1
vote
1
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458
views
CORS error in visualforce page (open CTI Softphone integration) that uses Lightning Message service
I have a Visual force page that contains a lightning web component hosted in a Salesforce developer sandbox
I have a custom object that will be linked with this Visual force page using the streaming ...
- 11
1
vote
1
answer
730
views
lightning message service not working
I'm using Lightning message service to pass message from LWC to another LWC.Both components are custom components used in community pages. The message is not being sent to the other component.
...
- 79
1
vote
0
answers
419
views
LMS Channel error: Your component must be rendered before you can publish to channel
I have two Aura Components that talk to each other via 2 LMS channels. The flow goes: Once we click on the quick action button on Case Header, it would fire a LMS channel that will be subscribed by ...
- 721
0
votes
1
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437
views
2-way LMS approach
Requirement: I have a custom subtab (Parent) on my console. It has a web link, upon clicking it opens a new subtab (Child). This Child subtab needs some data from the Parent subtab, so I am ...
- 721
1
vote
1
answer
2k
views
MessageChannel not working
I am testing out Message Channel feature. I have a very simple code which is not working:
Component 1:
<template>
<lightning-card title="Publish Experiment" icon-name="...
- 644
2
votes
1
answer
289
views
Is there a LMS payload limit for messages sent?
I am looking to understand if there a payload size limit for LMS.
({
handleClick: function(cmp, event, helper) {
var payload = {
recordId: "some string",
...
- 2,039
1
vote
1
answer
240
views
Trying to pull parameters from a LMS Message getting null
I am trying to pull 2 parameters from an LMS message. Currently they are coming in as null at the way I am grabbing them. The publish and subscribe methods work, as I threw console statements to track ...
- 316
0
votes
0
answers
66
views
LMS retrieval/update lags 1 click behind
It seems that the component relying on the URL update doesn't get the correct mediaId from the URL. The first click gets the Something went wrong.... <template>, then each following click is 1 ...
- 316
0
votes
1
answer
743
views
Is it possible to use LMS in Screen Flows?
I wanted to ask whether there is a possibility to use LMS - Lightning Message Service on Screen Flows in order to enable communication between its components.
- 450
1
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1
answer
976
views
Lightning Message Service doesn't work between community pages
I have two Lightning Web Components. One is on Community Page #1, the other is on Community Page #2. The first LWC creates a record and then navigates to the second Community page. I need to send ...
- 31
1
vote
0
answers
518
views
Can I have multiple instances of the same component using a Lightning Message Service channel?
If I create an lwc app component that uses an LMS message channel, will I run into problems if I have multiple instances of that app in a record page?
By problems, I mean all instances of the ...
- 41
0
votes
1
answer
1k
views
Lightning Message Service is not working
I have implemented the LMS(Lightning Message Service) concept in my project because I have to pass some parameter values from LWC component to Aura component.
the problem is my LWC component is not ...
3
votes
1
answer
1k
views
Should Lightning Message Service (LMS) work from a Lightning Web Component Action?
I've just moved some logic from one LWC into a "headless" @api invoke() LWC that is configured as an Action that appears as a button in the standard "Highlights Panel" LWC. The ...
- 135k
0
votes
1
answer
1k
views
Use message channel in both direction
I am using message channel to communicate between 2 lwc and both lwc must send and retrieve data. So i am passing value to subscriber and after that to publisher. How can i do it? Do i need to create ...
- 1
1
vote
1
answer
770
views
LMS send multiple message to one component
I need to send multiple message into one component via Lightning message system using one message channel.Is it possible or i must use multiple message channel? I tried to google, but didn't found ...
- 51
8
votes
1
answer
538
views
Can I use wire adapter in classes that do not inherit from LightningElement?
Is it possible to use @wire in classes that do not inherit from LightningElement?
Example:
export default class A {
@wire
messageContext;
}
What I want to achieve:
I want to create a ...
- 450
5
votes
1
answer
323
views
Is a headless daemon LWC a good pattern?
I want to write an LWC that listens for a small set of LMS messages, performs database operations sometimes and sometimes forwards new LMS messages for the benefit of another LWC that may or may not ...
- 135k
1
vote
1
answer
639
views
How to check if LWC component is available for Lightning out
I have several components which have complex logic (Platforn events , Message service)
How to check if LWC component/module is available for Lightning out and will work there ?
Any help will be ...
- 1,503
1
vote
1
answer
327
views
Suscribe to LMS published from an LWC in other package namespace
In a Managed Package, am publishing a message using a Lightning Message Channel in a Lightning Web Component.
I want to be able to suscribe to this Lightning Message Channel from a Lightning Web ...
- 1,559
6
votes
2
answers
1k
views
Best practises with Lightning Message Service
As an ISV, I need to establish communication between LWC and Visualforce page. I am planning to leverage LMS and I have 2 questions:
Which are the best practices regarding Lightning Message Channels? ...
- 1,559
0
votes
1
answer
1k
views
'sforce is not defined' on Visualforce page when trying to publish with LMS
I'm trying to use the lightning message service on a visualforce page.
To simplify things, I'm using the exact code supplied by Salesforce with the one exception I've updated the SAMPLEMC variable to ...
- 6,426
0
votes
2
answers
426
views
Is lightning message channel package-able
I have used the lightning message channel in LWC and I want to package the same. But lightning message channel is not available in the list. Also, the component available in the managed pacakge ...
- 447
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vote
1
answer
4k
views
How to Pass the Data from One LWC to Another LWC during Navigation when using Lightning Messaging Service
Requirement:
I want to pass the data from One LWC to another LWC. Both LWC are not on the same page but added in Different Tab.
So, when I pass the Data from LWC lmsNavComA, I should expect to see the ...
- 1,814
1
vote
1
answer
394
views
What are the risks of using LMS on an Experience Cloud Site, and is it on the Roadmap to be GA?
Currently I have a few components that use the Lightning Message Service, but I realize that this feature is in beta for Experience Builder sites. As of right now, my components seem to work as ...
- 677
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1
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1k
views
Publish/Subscribe Message Service VS Parent to Child LWC
Quick theoritical question.
I've read about the lightning message service communication between Lightning Web Components and it was specified that this type of communication is between unrelated ...
3
votes
1
answer
7k
views
LightningMessageChannel error
I'm trying to do some trainning for LWC using LMS, but when I push my source I get below error
org.auraframework.throwable.AuraRuntimeException: Unable to retrieve metadata for descriptor: markup://c:...
- 43
6
votes
1
answer
5k
views
Communication between two child LWC Components
What is the best way to realize bi-directional communication between two LWC components. Is it better approach to pass values throught parent component or use Lightning message service?
Dispatch ...
- 697
0
votes
0
answers
57
views
Events between components not on the same system
As the question goes, what can I use to communicate between 2 LWC components which are accessed by different users?
I am trying to build a Sprint planning poker app in LWC, where the vote submitted by ...
- 169
2
votes
1
answer
1k
views
Communicate across tabs in LWC using Message service
I am trying to send info across components which are not on the same lightning page. They are on different tabs of the App.
When the components are placed on the same page, Lightining message service ...
- 169
2
votes
0
answers
716
views
Odd Error Returned When Using Lightning Message Service in LWC - WindowMessengerNoConnectionError
This is my first time using Lightning Message Service. I set it up following the directions on this standard documentation page. After setting this up I am able to communicate between two lightning ...
- 315
1
vote
1
answer
164
views
Alert on account page for a new note being added
I want to be able to create an alert that is displayed on the account page whenever a new note is added. I've seen the Lightning Message Utility managed component in appexchange (https://appexchange....
2
votes
1
answer
649
views
sforce.one not available in VF page used as CTI adapter
We are using a VF page as a CTI adapter. It does not seem to include sforce.one. I notice on other VF pages this is brought in as part of api.js, but I cannot put my finger on what it is about that VF ...
- 305
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0
answers
13
views
Why define lightningMessageFields in Lightning Message Service? [duplicate]
I am wondering something.
In the XML file of a lightning message channel I can specify lightningMessageFields or I can omit this. Either way messages on the channel function correctly whatever you put ...
- 131
2
votes
1
answer
491
views
What is the real use of "lightningMessageFields" while using LightningMessageChannel
I was thinking - while publishing or subscribing to a LightningMessageChannel, the payload has to be in some way match exactly to the names or fields defined in the lightningMessageFields XML ...
- 143
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0
answers
1k
views
LMS throwing :sorry to interrupt error[invalid message context]
I am trying to publish a message form lWC , but getting error as below:
lightning/messageService: invalid message context]
i have created the message channel file added it in the package.xml and ...
- 1
0
votes
0
answers
236
views
Sending message from AURA to LWC
I have a requirement to send messages from Aura component to an LWC component. The component exist on the
The Aura Component contain an LWC inside it,, i need if the tab of Aura is open the i need to ...
- 1
3
votes
1
answer
728
views
Lightning Messaging Service: sforce.one not defined
I am using Lightning message service to pass message from VF page to LWC. VF page is in iframe and I am using this method to publish message
sforce.one.publish(CHANNEL, message);
However I am getting ...
- 344
0
votes
0
answers
2k
views
LWC LMS: Invalid message context error
I ask this question because I did not find any similar.
My error is "invalid message context". I will explain it graphically.
From tab 1, I create a record, with a navigation mixin, I am ...
- 96
3
votes
0
answers
278
views
Including Lightning Message Service in Managed Package?
I am attempting to make use of the Lightning Message Service to pass events between components when various actions occur (e.g. Sending an email, or authenticating the app.
The Salesforce docs suggest ...
