What is the need of custom controller in Visualforce as everything can be done by the combination of standard controller extension class?

What is the need of custom controller in Visualforce as everything can be done by the combination of standard controller extension class?

What is the need of “Custom Controller” in Visualforce as everything can be done by the combination of Standard Controller + Extension class. Ans : Sharing setting is applied on standard object/extension by default; In case we don’t want to apply sharing setting in our code then Custom controller is only option.

What is controller extension in Salesforce?

Controller extension in Salesforce is an Apex class containing a constructor that is used to add or extend the functionalities of a Standard Controller or custom controller in Salesforce. Extension controller is also used to leverage the functionality of another controller using our own custom logic.

Which is better an action file or a controller File?

A controller can have any file extension besides .md (Markdown) and .txt (text). For larger, more mature apps, standalone actions may be a better approach than controller files. In this scheme, rather than having multiple actions living in a single file, each action is in its own file in an appropriate subfolder of api/controllers.

Which is an example of a job controller?

For example, a controller for Jobs tracks Job objects (to discover new work) and Pod objects (to run the Jobs, and then to see when the work is finished). In this case something else creates the Jobs, whereas the Job controller creates Pods.

What does the name of a controller File mean?

A controller file is a PascalCased file whose name must end in Controller, containing a dictionary of actions. For example, a “User Controller” could be created at api/controllers/UserController.js file containing:

Why are there so many Controllers in Kubernetes?

Controllers can fail, so Kubernetes is designed to allow for that. There can be several controllers that create or update the same kind of object. Behind the scenes, Kubernetes controllers make sure that they only pay attention to the resources linked to their controlling resource.