Dynamic Code for Setting Default Field Values on Create Record in LWC Salesforce

Introduction:

In Salesforce Lightning Web Components (LWC), it's often necessary to set default values for fields when creating a new record. This can provide a better user experience by automatically populating certain fields with predefined values. In this blog post, we'll explore how to achieve this functionality using LWC and provide a fully dynamic working code example.

Prerequisites:

Before diving into the implementation, make sure you have a basic understanding of Salesforce development, Lightning Web Components, and JavaScript.

Step 1: Create a New Lightning Web Component

First, create a new Lightning Web Component by using the Salesforce CLI or the Salesforce Developer Console. You can name it "CreateRecordWithDefaults" or choose a more suitable name for your use case.

Step 2: HTML Markup

In the HTML template of your LWC, create the necessary input fields for the record you want to create. Add event listeners to capture the user input and handle default value logic.

<template>

  <lightning-input label="Field 1" value={field1Value} onchange={handleField1Change}></lightning-input>

  <lightning-input label="Field 2" value={field2Value} onchange={handleField2Change}></lightning-input>

  <!-- Add more fields as needed -->

  <lightning-button variant="brand" label="Create Record" title="Create Record" onclick={createRecord}></lightning-button>

</template>

Step 3: JavaScript Controller

In the JavaScript file of your LWC, define the default values for the fields you want to set.

import { LightningElement, track } from 'lwc';

import { createRecord } from 'lightning/uiRecordApi';

export default class CreateRecordWithDefaults extends LightningElement {

  @track field1Value = 'Default Value 1';

  @track field2Value = 'Default Value 2';

  // Add more fields and their default values as needed

  handleField1Change(event) {

    this.field1Value = event.target.value;

  }

  handleField2Change(event) {

    this.field2Value = event.target.value;

  }

  createRecord() {

    const fields = {}; // Object to hold field API names and values

    fields.Field_1__c = this.field1Value;

    fields.Field_2__c = this.field2Value;

    // Add more fields and their values as needed

    const recordInput = { apiName: 'Object__c', fields };

    createRecord(recordInput)

      .then((record) => {

        console.log('Record created successfully: ', record.id);

        // Add success logic, e.g., navigation or display success message

      })

      .catch((error) => {

        console.error('Error creating record: ', error);

        // Add error handling logic, e.g., display error message

      });

  }

}

Step 4: Apex Controller (Optional)

If you need additional server-side logic before creating the record, you can create an Apex controller method and call it from the JavaScript controller. Modify the createRecord method to include an Apex callout.

Step 5: Test the Component

Save your changes and test the component in a Lightning App or Record Page to ensure that the default field values are set correctly when creating a new record. Verify that the record is created successfully and the desired values are populated.

Conclusion:

In this blog post, we explored how to set default field values on the creation of a record using Lightning Web Components in Salesforce. By following the steps outlined above, you can create a fully dynamic LWC that sets default values for fields and provides an improved user experience. Feel free to customize the code as per your specific use case and extend it to meet your requirements.