Salesforce Developer Tutorial - The Complete Guide To Apex Triggers in 2022

In this episode we go over what absolutely everything you would need to know about apex triggers in Salesforce. We cover the basics, what a trigger is and why to use one, as well as more advanced concepts like trigger handlers, domain classes and siloing applications in your triggers!

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Table of Contents:

0:00 - Intro
0:49 - What we'll cover in this video
2:26 - What is a Trigger and why use one?
5:03 - When does a Trigger fire?
8:10 - When to use a Trigger instead of a Flow?
12:59 - The difference between a before and an after trigger?
14:40 - How to create an Apex Trigger
21:01 - The differences between Apex Triggers and Apex Classes
27:50 - How to run the trigger
29:30 - How to use Trigger Context Variables
40:02 - Why you can't update trigger records in After Triggers
44:54 - How to use addError in a trigger to make custom validation rules
47:30 - Why you should never have more than one trigger per object
49:45 - When should you use async processes instead of triggers?
55:27 - Trigger Bulkification Tips and Suggestions
1:00:08 - Why you should never use more than one automation process
1:04:36 - Benchmarking the one automation process compared to combining automation processes
1:10:49 - How to prevent your trigger from hitting limits
1:15:35 - Trigger bulkification tips recap
1:20:37 - What are Trigger Handlers and Why use them?
1:25:28 - What are my suggested Trigger Handler Frameworks?
1:35:22 - What are Domain classes?
1:40:17 - How to create Domain/Trigger Silos for multiple applications in your Salesforce Org.
2:05:32 - The importance of trigger switches (turning your trigger on and off)

DISCLAIMER: The views and ideas expressed on this YouTube channel and blog are based on past development experiences and may not always work for your particular scenarios. The advice in these videos may also become outdated as technology advances. They should be used as examples for educational purposes only. Using any shown solutions in your own org is not advisable since they are example scenarios.

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[victorcavalheiro]

You are the best bro, i don't get tired of watching yr videos. Independent of my knowledge, i'm always learning here. Thank's

[AnnaSzabo]

This is my favorite channel to watch at 2 am! Scheduled my PD1and thank you for not only this helpful content but also your engaging personality - I am not falling asleep and enjoying your video

[AsimAliOnline]

Thank you Matt, very much appreciated!

[xbjbbx]

Thank you for these videos! I'm studying for PD1 and these explanations have been so helpful. You have a unique was of explaining complex concepts that really helps me understand. Thanks you!

[pedroprada]

thank you Matt so much for making this complete video.. really appreciated learning about domain class... that is a great idea.. haven't seen any project doing this...
I got a bit lost on breaking trigger handlers by departments (marketing vs sales) and the apex common class... will review those other videos as well as I am missing g that foundation..
really appreciate you putting this together...

[iskoss]

Lovely. Very good jump into the triggers. Thank you, Matt!

[maichimai]

thank you somuch, keep sharing. Have a nice day Matt <3

[paksoskrydis]

Thanks for your videos, really good explanations.

[FrenchyRider]

You really make it fun to learn ! Thank you :)

[TheTravismalle]

Matt, you going to DreamForce this year? Hope to see you there. Great content sir.

[coffeelimestone]

Thank you so much for this. I am currently struggling with writing a before update trigger handler that updates fields of an SObject. Any suggestions?

[bis]

thanks a lot for the video, i subscribe and i hope more view for you ! excellent job !

[josueramirez]

Do you have any videos (or recommend any) for people who want to learn about triggers through the “Table-Driven Trigger Management” (TDTM) feature from the managed packages EDA or NPSP?

[CrisjunMarRavelo]

47:30 what to do if a managed package has 2 triggers on an object and we want to create our own trigger implementation? 🤔

[manninggrinnan]

At 1:04:20, why use an IF? Why not just " FirstName = 'Hi' " ? I'm nervous I'm causing some back issue that I don't know about. Thanks for your hard work BTW.