[SalesForce] LWC – How to get a record from within a javascript function

LWC newbie here. I am creating a LWC that will go on record pages of specified objectApiNames. When the user clicks the button in my LWC, depending on objectApiName I have to retrieve certain SObjects in order to make some decisions as to where to redirect the user (no retrieved data needs to be rendered in my LWC).

Most samples of getting data are focused on data that needs to be rendered and/or @wired/getRecord. I don't see any way to use getRecord from within a js function. Am I missing something here?

Of course the other option is to call an APEX function to the data retrieval.

Best Answer

Take a look at the uiRecordApi's getRecord service. The record returned contains the API name, as you can see in the documentation. Using this info you can get the current page's record's type thus:

@wire(getRecord, { recordId: "$recordId" })
handleRecord({ error, data }) {
    if (data) {
        const objectApiName = data.apiName;
        ...
    }
}

You can ask for various fields in subsequent wire invocations of this same service by having those depend on properties of your LWC that are set in the initial record retrieval when certain object API names are retrieved.

E.g. you could have "contactId" that gets set to the record's Id in "handleRecord" when the apiName is "Contact" then have a subsequent wire like:

@wire(getRecord, { recordId: "$contactId", /* ask for fields here */ })
handleContactRecord({ error, data }) {
    ...
}

and in this case then extract values from the contact to do what you need in that case.

The benefit of this approach is that getRecord will quite likely not actually perform any server round-trip at all since the record is already cached in the page (at least with the fields shown in the page).

Related Solutions

[SalesForce] working with the refreshApex feature in LWC

Going by the documentation, it seems you will need to create an additional property and utilize that in your wired function.

To refresh a wired method, pass the argument the wired method receives (which is the wired value) to refreshApex(). In this sample code, the wired method is wiredGetActivityHistory(value). Hold on to the value provisioned by the wire service and pass it to refreshApex().

You will need to declare another variable, say mySendForSplitting and then utilize that in your sendForSplitting, something as:

sendForSplitting({error,data}) {
    this.mySendForSplitting = data;
    // rest of the code
}

And then use refreshApex() as below:

refreshApex(this.mySendForSplitting);

You can find an example on the lwc-recipe as well.

[SalesForce] How to get an LWC component on a record page to refresh when that page is updated

ADDED

wire service getWorkingDays is dependent on record.id. So, this wire will invoke again only when record.id changes. But, although getRecord service is invoked every-time record is updated, its id never changes and so getWorkingDays is never getting invoked again.

You can use imperative apex call and use it inside getRecord function or you can try refreshApex inside getRecord

OLD ANSWER

getRecord from uiRecordApi is based on lightning data services and so it will be invoked automatically when the record is updated.

Sample JS code:

import { LightningElement, wire, api, track } from 'lwc';
import { getRecord } from 'lightning/uiRecordApi';

export default class Poc extends LightningElement {
    @api recordId;
    @track account;

    @wire(getRecord, { recordId: '$recordId', fields: [ 'Account.Name', 'Account.Phone' ] })
    getaccountRecord({ data, error }) {
        console.log('accountRecord => ', data, error);
        if (data) {
            this.account = data;
            this.processRelatedObjects();
        } else if (error) {
            console.error('ERROR => ', JSON.stringify(error)); // handle error properly
        }
    }

    processRelatedObjects() {
        console.log('processRelatedObjects for => ', JSON.stringify(this.account));
        // further processing like refreshApex or calling another wire service
    }
}

Proof:

Added based on comments:

Its working even for related list:

Best Answer

Related Solutions

[SalesForce] working with the refreshApex feature in LWC

[SalesForce] How to get an LWC component on a record page to refresh when that page is updated

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