How do I use a custom controller in Salesforce?
Add a custom controller to a Visualforce page by referencing the name of the controller class in the controller attribute. When your page uses a custom controller, you can’t use a standard controller. Pages use a different attribute to set the custom controller.
Why do we need custom controller in Salesforce?
A custom controller is an Apex class that implements all of the logic for a page without leveraging a standard controller. Use custom controllers when you want your Visualforce page to run entirely in system mode, which does not enforce the permissions and field-level security of the current user.
What is difference between standard controller and custom controller in Salesforce?
The standard controller is auto geenrated by SF for all objects. Custom controllers are written by you and do what your code tells them to do.
Can we use both standard controller and custom controller together?
See below syntax to define extension. We can use Stnadard controller/ Custom Controller and extensions at a time. But we cannot use Standard controller & Custom controller at a time.
What is difference between with sharing and without sharing in Salesforce?
Use With Sharing when the User has access to the records being updated via Role, Sharing Rules, Sales Teams – any sort of sharing really. Without sharing keyword: Ensures that the sharing rules of the current user are not enforced.
When should you use controller extensions?
Use controller extensions when:
- You want to leverage the built-in functionality of a standard controller but override one or more actions, such as edit, view, save, or delete.
- You want to add new actions.
- You want to build a Visualforce page that respects user permissions.
How many types of controllers are there in Salesforce?
What are the different types of Visualforce Controllers? Standard Controllers. Custom Controllers. Controller extensions.
What is StandardSetController why we use it?
StandardSetController objects allow you to create list controllers similar to, or as extensions of, the pre-built Visualforce list controllers provided by Salesforce.
Can we call Apex class from process builder?
Calling apex class from a Process builder is needed when complex logic has to be bundled in the form of an apex class and has to be automated as part of a process flow. To invoke an apex method you can use @InvocableMethod and follow the following steps: Invocable methods can have only one parameter.
What is wrapper class in Salesforce?
A wrapper or container class is a class, a data structure that contains different objects or collections of objects as its members. A wrapper class is a custom object defined by a programmer wherein he defines the wrapper class properties.
What are controllers in Salesforce?
Controllers are those who provide business logic to Visualforce pages. It accepts data from user like input values. Controller manipulates user’s input and performs action on behalf of the User. Manipulated User’s data is redirected to browser as a new page.