Slaesforce FAQ

can we use set controller in triggers salesforce

by Halie Larkin Published 2 years ago Updated 2 years ago
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No, even if the events are same, there is no control over which trigger will execute 1st. If you have same events in two different triggers, then merge them into a single trigger. If you can post snapshot if your coe, I can guide you in merging them.

Full Answer

When should we use triggers in Salesforce?

We should use triggers to perform tasks that can’t be done by using the point-and-click tools in the Salesforce user interface. For example, if validating a field value or updating a field on a record, use validation rules and workflow rules instead. What is Trigger Syntax?

Is there a standard controller for every Salesforce object?

A standard controller exists for every Salesforce object that can be queried using the Lightning Platform API. Sorry, the document you are looking for doesn't exist or could not be retrieved.

What are apex triggers in Salesforce?

Apex triggers enable you to perform custom actions before or after changes to Salesforce records, such as insertions, updates, or deletions. For example, you can have a trigger run before an object's records are inserted into the database, after records have been deleted, or even after a record is restored from the Recycle Bin.

What does return true mean in a Salesforce trigger?

Returns true if this trigger was fired after a record is recovered from the Recycle Bin. This recovery can occur after an undelete operation from the Salesforce user interface, Apex, or the API. Returns a list of the new versions of the sObject records.

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Can we use custom setting in trigger?

So your custom settings will store the trigger name and its status in IsActive checkbox. Then in your apex trigger, add an IF condition at the top to check if the Trigger status in Custom settings is TRUE, only then run the entire apex trigger code. yes, i can try this.

How do you control trigger using custom settings?

All you need to do is setup a hierarchy custom setting object by going to Setup -> Custom Settings and then create Checkbox (Boolean) fields for each object you have a trigger for that you may want to bypass. After you're done setting that bad boi up.

Can we write trigger on custom setting in Salesforce?

Its not possible to write a trigger on the Custom Settings. Though you are able to write a trigger on Custom Settings..you will not be able to Update the Records as Custom Settings do not have the Lookup Fields to associate your Custom Setting with any of the Objects(be it Standard or Custom).

Can we use both standard controller and custom controller together in Salesforce?

We can use Stnadard controller/ Custom Controller and extensions at a time. But we cannot use Standard controller & Custom controller at a time.

Can I deactivate trigger in production?

In general, triggers are not editable once deployed to production org. However, in certain circumstances there might be a need to disable triggers in production. Note: Consider the consequences of disabling a trigger in the production environment during work hours.

Can we deactivate managed package trigger?

We can't deactivate managed package triggers. Check hierarchical custom setting in a managed package if there is a way to enable/disable any functionality.

Can we perform DML operations on custom setting?

Hierarchy custom settings have the ability to choose different values based on the user that has invoked an operation. If the settings need to change based on a user or profile, you should still use custom settings. Another disadvantage of using custom metadata types is that they cannot be updated using DML operations.

Can we write trigger on custom metadata?

It's not possible to write a trigger/Workflow on custom metadata object. If you need trigger you will need to use custom object .

What is the difference between custom setting and custom object?

Custom Object : Custom object is like any Database table that we used to have in SQL or in any other database. Custom Setting : Custom Setting is like configuration file that we used to have.

Can we use extensions with standard controller?

Extension controller is also used to leverage the functionality of another controller using our own custom logic. Controller extensions in salesforce can be used without Standard controller or custom controller.

Can we use StandardController and controller attributes at the same time?

NOTE– You cannot use the standardController and controller attributes at the same time.

Can we use extension with custom controller?

A controller extension is an Apex class that extends the functionality of a standard or custom controller. Use controller extensions when: You want to leverage the built-in functionality of a standard controller but override one or more actions, such as edit, view, save, or delete.

What is trigger in Salesforce?

Apex triggers enable you to perform custom actions before or after changes to Salesforce records, such as insertions, updates, or deletions. A trigger is Apex code that executes before or after the following types of operations: insert. update. delete.

What is read only trigger?

The records that fire the after trigger are read-only. Triggers can also modify other records of the same type as the records that initially fired the trigger. For example, if a trigger fires after an update of contact A , the trigger can also modify contacts B, C, and D.

When do upsert triggers fire?

upsert triggers fire both before and after insert or before and after update triggers as appropriate. merge triggers fire both before and after delete for the losing records, and both before and after update triggers for the winning record. See Triggers and Merge Statements.

What happens to triggers after a record is undeleted?

Triggers that execute after a record has been undeleted only work with specific objects. See Triggers and Recovered Records. Field history is not recorded until the end of a trigger. If you query field history in a trigger, you don’t see any history for the current transaction.

Can you undelete a trigger?

For example, you can have a trigger run before an object's records are inserted into the database, after records have been deleted, or even after a record is restored from the Recycle Bin.

What is trigger in Salesforce?

What is Triggers in Salesforce? A trigger is an Apex script that executes before or after data manipulation language ( DML) events occur. Apex triggers enable you to perform custom actions before or after events to record in Salesforce, such as insertions, updates, or deletions. Just like database systems support triggers, ...

What is trigger in SQL?

A trigger is a set of statement which can be executed on the following events. In above trigger events one or more of below events can be used with comma-separated.

What is a standard controller in Salesforce?

A standard controller exists for every Salesforce object that can be queried using the Lightning Platform API. The following topics include additional information about using standard controllers: Associating a Standard Controller with a Visualforce Page. Accessing Data with a Standard Controller. Using Standard Controller Actions.

What is a Visualforce controller?

A Visualforce controller is a set of instructions that specify what happens when a user interacts with the components specified in associated Visualforce markup, such as when a user clicks a button or link. Controllers also provide access to the data that should be displayed in a page, and can modify component behavior.

What is Lightning controller?

Controllers also provide access to the data that should be displayed in a page, and can modify component behavior. The Lightning platform provides a number of standard controllers that contain the same functionality and logic that are used for standard Salesforce pages.

Handling Actions with Controllers

Up to now, we’ve worked only with XML-style markup. Up to now, the only way to have our component’s output change was to change that markup. Up to now, our components didn’t react to user input. Up to now, we haven’t written any JavaScript.

Beyond the Basics

We talk a lot about controllers in this unit, and we know that the component itself is a view. We even mentioned the MVC, or Model-View-Controller, design pattern that’s so common in web app frameworks. Is Lightning Components built on the MVC pattern?

Action Handlers

The combination of name-value pair and specific function signature is an action handler. You’ll hear or see the terms action handler, controller action, and controller function used interchangeably, and for the most part that’s correct. They almost always refer to the same thing. (We’re not going to worry about the exceptions in this module.)

The Aura Components View-Controller Programming Model

OK, gut check time. Is this making sense? For sure? If you just think so, make sure you’ve actually created the helloMessageInteractive component using the preceding code. It’s one component, and copy/pasting the code takes two minutes, but being able to play with it is essential for understanding handling actions.

Function Chaining, Rewiring, and Simple Debugging

Our first version of handleClick was three lines of code, because we broke each step in the get-process-set pattern into separate lines. You can use something called function chaining to collapse those into fewer lines. Since you’ll probably see this in other Lightning Components code, let’s give it a whirl ourselves.

Hands-on Challenge

You’ll be completing this challenge in your own hands-on org. Click Launch to get started, or click the name of your org to choose a different one.

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