//Lets Assume we are writing Controller Extension for Account Account acct = [SELECT ID FROM Account LIMIT 1]; //Start Test Context, It will reset all Governor limits Test.startTest (); //Inform Test Class to set current page as your Page where Extension is used Test.setCurrentPage (Page.YOUR_PAGE); //Instantiate object of "ApexPages.StandardController" by passing object ApexPages.StandardController stdController = new ApexPages.StandardController (acct); //Now, create Object of your Controller extension by passing object of standardController YOUR_Extension ext = new YOUR_Extension (stdController); //Here you can test all public methods defined on Extension "ext" //..... your code //Finish Test Test.stopTest ();
Full Answer
What is the use of Extension Controller in Salesforce?
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.
What are Data Extensions and how do they work?
By creating and linking data extensions, you can access information about contacts and use that information to segment, filter, and target contacts with relevant sends. You can also use this data to target contacts across multiple channels, such as email, social, and mobile messaging.
What is an extension of a controller?
A controller extension is any Apex class containing a constructor that takes a single argument of type ApexPages.StandardController or CustomControllerName, where CustomControllerName is the name of a custom controller you want to extend. The following class is a simple example of a controller extension:
How do I add controller extensions to a page?
The extension is associated with the page using the extensions attribute of the <apex:page > component. As with all controller methods, controller extension methods can be referenced with {! } notation in page markup.
See more
How do I use an 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.
What is extension in Apex page?
A controller extension is any Apex class containing a constructor that takes a single argument of type ApexPages. StandardController or CustomControllerName , where CustomControllerName is the name of a custom controller you want to extend.
What is extensions class used for?
A controller extension is an Apex class that extends the functionality of a standard or custom controller. 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.
Can we use custom controller and extension in one VF page?
We can add number of extensions to visualforce page. 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 controller and extension?
A controller extension is an Apex class that extends the functionality of a standard or custom controller. 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.
Can we use multiple extensions in VF page?
In controller extensions we can use multiple extensions in single visualforce page. Here the extension controller is divided in to smaller controllers. These smaller controllers acts as a subset of the behaviours.
What is extension method in MVC?
What is extension method? Extension methods in C# are methods applied to some existing class and they look like regular instance methods. This way we can "extend" existing classes we cannot change. Perhaps the best example of extension methods are HtmlHelper extensions used in ASP.NET MVC.
What is Apex controller in Salesforce?
A custom controller is an Apex class that is used to execute the logic of a page without the need of a standard controller. To completely run Visualforce pages in system mode, we must utilize custom controllers.
What is controller in Salesforce?
Controllers typically retrieve the data to be displayed in a Visualforce page, and contain code that executes in response to page actions, such as a button being clicked. When you use the standard controller, a great deal of, well, standard functionality is provided for you by the platform.
How many controllers can be used in VF page?
You can have the two controller functionality in one visualforce page by using standard controller and extension.
What is limit of extension classes we can use?
Currently there is no limit on the number of extensions you can have on a VF Controller.
What is difference between standard controller and custom controller?
There are number of standard controllers exists for each Salesforce object which provides the functionality similar to custom controller. A custom controller is the user defined an Apex class that implements all of the logic for a page without leveraging a standard controller.
What happens when a controller extension extends a standard controller?
However, if a controller extension extends a standard controller, the logic from the standard controller does not execute in system mode. Instead, it executes in user mode, in which the permissions, field-level security, and sharing rules of the current user apply.
What is controller extension?
A controller extension is any Apex class containing a constructor that takes a single argument of type ApexPages.StandardController or CustomControllerName, where CustomControllerName is the name of a custom controller you want to extend.
Controller extension in Salesforce
In this Salesforce Tutorial, we are going to learn about Controller extension in Salesforce and how can we build Controller extension in Salesforce. Let us learn about controller extension with a simple example.
Visualforce extension controller Output
The above shown image is the output for extension controller in visualforce. Account Id must be added at the end of the URl and click on Save button to get the output. As shown above the the name of the account is tutorialkart, if we change the name and Saved. The account named is renamed as shown below.
The Data Extension Grid
The data extension grid in the Contact Builder app displays all data extensions contained within an account. To review information specific to a data extension, select an individual data extension. Display columns are configurable in the grid by clicking the icon in the upper right corner.
Data Retention
You can determine the length of time you keep data in a data extension using a data retention policy. Data extensions with a data retention policy automatically delete information older than a given date from the data extension. Each account uses a default period of six months for data retention, and you can modify that value as necessary.
Prerequisites
Before you get started with Salesforce data extensions (SFDEs), check the subscriber key, Email field, and field names.
Importing Salesforce Data Extensions
Import Salesforce data extensions into the Marketing Cloud through Interactions. Create import activities with accessible Sales or Service Cloud reports. For example, if you can’t access a report in Marketing Cloud, you can’t access it in the Marketing Cloud Admin folder of Sales or Service Cloud.
