How To Write A Trigger To Update Number Of Contacts In Account

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Hey guys, today in this post we are going to learn about How to Write a trigger to update parent business relationship phone number when ever the contact phone number is updated using trigger handler and helper course in Salesforce

Real time scenarios:- Write a trigger on Contact to update the parent Account Phone number when ever the Contact Telephone is updated through trigger handler and helper grade in Salesforce.

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Files we used in this post case

contactTrigger.apxt	Apex Grade Trigger	It will be fired when ever contact telephone number is updated.
contactTriggerHandler.apxc	Apex Class Trigger Handler	Noon handler trigger to update account phone number with contact phone number when ever contact is updated.
Parent Object:-Business relationship Fields:-Phone Child Object:-Contact Fields:- Phone, AccountId (Lookup)	Trigger to updated parent Business relationship from Contact based on lookup relation AccountId.

Final Output

trigger to update account phone with contact phone -- w3web.net

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Notice the below steps for this post.

Create Noon Class Trigger

Stride v:- Create Apex Grade : contactTrigger.apxt

From Programmer Console ➡ File ➡ New ➡ Apex Class

contactTrigger.apxt [Apex Grade Controller]

trigger contactTrigger on Contact ( before insert , before update , earlier delete , afterwards insert , later update , later delete , later on undelete ) {

if ( trigger . isBefore ) {

system . debug ( 'I am before trigger ' ) ;

}

else if ( trigger . isAfter ) {

system . debug ( 'I am after trigger ' ) ;

if ( trigger . isUpdate ) {

contactTriggerHandler . afterUpdateHelper ( trigger . new ) ;

}

Create Noon Trigger Handler and Helper Class

Stride 5:- Create Apex Class : contactTriggerHandler.apxc

From Programmer Console ➡ File ➡ New ➡ Apex Course

contactTriggerHandler.apxc [Apex Class Controller]

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public form contactTriggerHandler {

public static void afterUpdateHelper ( List < Contact > conList ) {

Ready < Id > setId = new Set < Id > ( ) ;

for ( Contact con : conList ) {

setId . add ( con . AccountId ) ;

}

system . debug ( 'setId ' + setId ) ;

List < Account > accItemList = [ Select Id , Proper name , Telephone , ( Select Id , FirstName , LastName , Telephone , AccountId From Contacts ) From Business relationship Where Id IN : setId ] ;

for ( Account a1 : accItemList ) {

for ( Contact c1 : a1 . Contacts ) {

if ( c1 . Phone != null ) {

a1 . Telephone = c1 . Telephone ;

update accItemList ;

}

trigger to update account phone with contact phone -- w3web.net

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FAQ (Oftentimes Asked Questions)

What is trigger in Salesforce?

A trigger is an Apex script that executes before or afterward information manipulation language (DML) events occur.

Why exercise we use triggers in Salesforce?

Typically, we use triggers to perform operations based on specific conditions, to alter related records or restrict sure operations from happening.

What are different events in trigger?

The events that fire a trigger include the following: DML statements that change data in a table ( INSERT , UPDATE , or DELETE ) DDL statements.

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Hi, This is Vijay behind the admin and founder of w3web.net. I am a senior software developer and working in MNC company from more 8 years. I am cracking fan of technology, configuration, customization & evolution. Apart of this, I love to write virtually Blogging in spare time, Working on Mobile & Web application development, Salesforce lightning, Salesforce LWC and Salesforce Integration development in full time. [Read total bio] | | The Sitemap where yous can detect all published mail on w3web.internet

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