Lesson: 71 | Notify User on Info Modification

User Story

As a user, I want to receive a notification when any of my information (such as my first name, my last name, my email or phone number) is modified in the system. This will help me stay informed about changes to my personal information and ensure that my account remains secure.

Code

trigger UserTrigger on User (before update) {
    for(User oldUser : Trigger.old) {
        User newUser = Trigger.newMap.get(oldUser.Id);
        if(newUser.FirstName != oldUser.FirstName || 
           newUser.LastName != oldUser.LastName ||
           newUser.Email != oldUser.Email ||
           newUser.Phone != oldUser.Phone) {
            String userEmail = oldUser.Email;

            Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
            mail.setToAddresses(new List<String>{userEmail});
            mail.setSubject('Your information has been updated');
            mail.setPlainTextBody('Hello, ' + oldUser.FirstName + '.\n\nYour information has been updated.');
            Messaging.sendEmail(new List<Messaging.SingleEmailMessage>{mail});
        }
    }
}

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Exercises

A. Administrator | Exercises (62 lessons)

B. Flow Builder | Exercises (79 lessons)

C. Apex Beginner | Exercises (78 lessons)

D. Apex Intermediate | Exercises (97 lessons)

01 | Sum of the numbers from 1 to 10

02 | Create 100 Accounts

03 | School Grading

04 | Max Integer

05 | Create a Lead Trigger that updates the value of Rating

06 | Create a trigger which updates the description of the related opportunities of an account...

07 | Update Description when an Account is created or updated

08 | Update Account's Billing Country as USA for America or AMERICA values

10 | Automatically Copy Mailing Address to Other Address When "Mailing Address Is Same As Other...

100 | Automatically Adjust Opportunity Close Dates Based on a Custom Range

101 | Scheduled Batch Update for Account Annual Revenue

102 | Update Account Ratings Based on Closed Case Count

103 | Preventing Multiple Open Cases for an Account

11 | Create List With Method and Parameters

12 | Set Lead Source to Web Upon Opportunity Creation or Update

13 | Automatically Set Opportunity Lead Source and Type

14 | Mandatory Type Field for Opportunities

15 | Student Management System

16 | Account Name Validation on Creation

17 | Unique Email

18 | Account Name can not be changed

19 | Concatenate two fields

20 | Update billing country to USA if entered as America

21 | Create a trigger that determines if the account name has changed

22 | Create a contact related to Account if Create Contact Field is Checked

23 | Update the description of the related opportunities of an account

24 | Prevents users to delete Accounts with related opportunities

25 | Create an Opportunity related to Account Object

26 | Update Annual Revenue

27 | Prevents users to change Stage Name of Won and Lost Opportunities

28 | Avoid deletion of the account with a contact

29 | Prevent users to create an opportunity with an existing name

30 | Future Method Example 01

31 | Future Method Example 02

32 | Apex Scheduler Example

33 | Update Contact Description Upon Insertion or Update

34 | Prevent Deletion of Closed Won Opportunities

35 | Create Opportunity On Lead Conversion

36 | Batch Apex | Delete Records

37 | Batch Apex | Update Records

38 | Implementing a Stateful Batch Apex to Aggregate Data

39 | Batch Apex | Inactive Account Deleter

40 | UpdateAccountBillingAddress

41 | Delete Inactive Accounts

42 | Send New Year Message

43 | Debug the number of Deleted Accounts

44 | Update description when the Name of an Account is updated

47 | Update Phone Number of the Contacts when an Account is updated

48 | Prevent Duplicate Contact Creation

49 | Animal Sound Simulator

50 | Prevent Account Deletion

51 | Updating Last Contact Date on Account When Contacts Are Added or Updated in Salesforce

52 | Automatically Set Case Status and Priority for Email-Originated Cases

53 | Automatically Set Lead Rating Based on LeadSource

54 | Automatically Create Associated Contact Record for New Account

55 | Automatically Create Associated Contact Record for New Consulting Account

56 | Automatically Create Multiple Contact Records Based on Number of Contacts Specified on Account...

57 | Update Account with Latest Opportunity Amount

58 | Update Opportunity Stages on Account Deactivation

59 | Prevent Deletion of Active Accounts

60 | Restrict Editing of Closed Opportunities

61 | Validation rule to require Closed Lost Reason on Opportunities

62 | Restrict Account deletion to System Administrators only

63 | Prevent Deletion of Closed Opportunities

65 | Update Contact Owner When Account Owner Changes

66 | Preventing Duplicate Contact Records Trigger

67 | Deleting secondary contacts with a batch apex class

68 | Account Trigger for Updating Related Contacts

69 | Auto-assign Task to Case Owner

70 | Email Alert for High Priority Cases

71 | Notify User on Info Modification

72 | Schedule a daily Apex job to notify users on company holidays

73 | Prevent creation of new Account records outside of business hours

74 | Phone Number Formatting

75 | Vehicle Inventory Management

76 | Expense Tracking Application

77 | Set default value for Opportunity Type field as New Customer when left blank

78 | Constructor Example

79 | Interface Class

80 | Interface Class

81 | Random Stage Name Generator

82 | Deactivate System Administrator after 30 days inactivity

83 | Eliminate Duplicate Integers from a List

84 | Switch | Date Utility - Convert Month Name to Number

85 | Switch | Shipping Cost Calculator

86 | Empowering Account Owners in Salesforce

87 | Update Account Annual Revenue Based on Opportunity Amount Summaries

88 | Update Account Contacts Summary Fields

89 | Automated Phone Number Retrieval and Case Creation for Accounts with Missing Phone Information

90 | Update fields when an Account is created.

91 | Automated Test Data Entry

94 | Create Person Account for Each Contact

95 | Prevent Duplicate Contacts in the System

96 | Convert 24-Hour Time to 12-Hour Format

97 | Account Merge Utility

98 | Create Duplicate Accounts Dynamically Based on Existing Records

99 | Create Apex Method to Validate and Shorten String Length

E. Integration | Exercises (6 lessons)

F. Lightning Web Component (LWC) Exercises (34 lessons)

Lesson: 71 | Notify User on Info Modification

User Story

Exercises

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