Category: Apex

Demystifying addError

Recently somebody asked me some questions about when to use addError, and it is true that there is always an aura of mystery about when and how to use this Salesforce method. My idea in this blog post is try to explain addError uses with practical examples, in order that it is demystified.

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Visualforce order of execution I: GET requests

Following with a previous post about triggers and order of execution, I want to review in this new post how the order of execution on a Visualforce page is. This time we need to distinguish between two different cases: Visualforce pages that perform a get request and those which perform a post request.

In this post I will explain how GET requests work. I will elaborate a second part of the post, talking about POST requests.

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Triggers and order of execution

In this post I want to review the order in which things happen when I save a record in Salesforce.  This is important to understand if you are an app builder who works automating processes as well as if you are a developer that writes trigger code. Both worlds will converge in the end and affect each other, so you have to bear in mind how Salesforce executes things internally to ensure a correct behaviour of your solution.

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Working with datetimes

This time I want to point out some weird behaviours I have learnt with the practice about datetimes in Salesforce. Did you know them?

1. Datetime fields do not store milliseconds.

Currently datetime fields don’t support millisecond precision. Even if you work with Datetime class (which do support millisecond precision), when you store them in database the milliseconds are lost.

This is a problem if you need to work with a high time precision, that can be worked around in some ways, for example storing the Unix time in a number field.

You can vote this related idea if you feel it is an important fact.

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