Apex Primer

Examples

Apex LWC Component

Building an LWC Component

Apex LWC component fetches Opportunity data for UI.

Understanding Apex LWC Components

Apex Lightning Web Components (LWC) enable Salesforce developers to build modern, responsive user interfaces. By leveraging Apex, you can fetch data from Salesforce and display it using LWC. In this tutorial, we will focus on creating an LWC component to fetch and display Opportunity data.

Setting Up the Apex Class

To fetch Opportunity data, we first need to create an Apex class. This class will handle the retrieval of Opportunity records from Salesforce. Ensure that the class is annotated with @AuraEnabled to expose its methods to the LWC.

Creating the LWC Component

Once the Apex class is ready, the next step is to create the Lightning Web Component. This involves creating three files: an HTML file, a JavaScript file, and a metadata configuration file. These files will define the UI and the logic to fetch and display data.

Deploying and Testing the Component

After creating the component files, deploy them to your Salesforce org. Use your favorite tool like Salesforce CLI or Visual Studio Code with Salesforce Extensions to deploy the component. Once deployed, add the component to a Lightning App Page or Record Page to test the functionality. You should see a list of Opportunities displayed as specified in the HTML template.

Troubleshooting Common Issues

If you encounter any issues, ensure that:

  • The Apex class is deployed and has the necessary permissions.
  • The LWC files are correctly named and structured.
  • No namespace conflicts exist in your Salesforce org.
  • All dependencies are properly imported in the JavaScript file.

Examples

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