What is PageReference class in Salesforce?

What is PageReference class in Salesforce?

A PageReference is a reference to an instantiation of a page. Among other attributes, PageReferences consist of a URL and a set of query parameter names and values.

Use a PageReference object:

· To view or set query string parameters and values for a page

·  To navigate the user to a different page as the result of an action method

Methods

PageReference methods are all called by and operate on a particular instance of a PageReference 

The table below describes the instance methods for PageReference.

• getAnchor() 
  Returns the name of the anchor referenced in the page’s URL. That is, the part of the URL after the hashtag (#).
• getContent() 
  Returns the output of the page, as displayed to a user in a Web browser.
• getContentAsPDF() 
  Returns the page as a PDF, regardless of the <apex:page> component's renderAs attribute.
• getCookies() 
  Returns a map of cookie names and cookie objects, where the key is a String of the cookie name and the value contains the list of cookie objects with that name.
• getHeaders() 
  Returns a map of the request headers, where the key string contains the name of the header, and the value string contains the value of the header.
• getParameters() 
  Returns a map of the query string parameters that are included in the page URL. The key string contains the name of the parameter, while the value string contains the value of the parameter.
• getRedirect() 
  Returns the current value of the PageReference object's redirect attribute.
• getUrl() 
  Returns the relative URL associated with the PageReference when it was originally defined, including any query string parameters and anchors.
• setAnchor(String) 
  Sets the URL’s anchor reference to the specified string.
• setCookies(Cookie[]) 
  Creates a list of cookie objects. Used in conjunction with the Cookie class.
• setRedirect(Boolean) 
  Sets the value of the PageReference object's redirect attribute. If set to true, a redirect is performed through a client side redirect.

Controller :

public class PageReferenceController {

Account account;

    public Account getAccount() {

        if(account == null) account = new Account();

        return account;

    }

    public PageReference save() {

        // Add the account to the database. 

        insert account;

        // Send the user to the detail page for the new account.

        PageReference acctPage = new ApexPages.StandardController(account).view();

        acctPage.setRedirect(true);

        return acctPage;

    }

    

    

}

In controller class once the account record details is entered and click on save button the PageReference will redirect you to Newly created Account record detail page using the 

 PageReference acctPage = new ApexPages.StandardController(account).view();

 acctPage.setRedirect(true);

Visualforce Page:

<apex:page controller="PageReferenceController" tabStyle="Account">

    <apex:sectionHeader title="New Account Edit Page" />

    <apex:form >

        <apex:pageBlock title="Create a New Account">

            <apex:pageBlockButtons location="bottom">

                <apex:commandButton action="{!save}" value="Save"/>

            </apex:pageBlockButtons>

            <apex:pageBlockSection title="Account Information">

                <apex:inputField id="accountName" value="{!account.name}"/>

                <apex:inputField id="accountSite" value="{!account.site}"/>

            </apex:pageBlockSection>

       </apex:pageBlock>

    </apex:form>

</apex:page>

Output:

 once you click on save button it will save the record and display in record detail page.

That's it ..

Thanks for Reading...

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