AD0-E716 Adobe Commerce Developer Expert Questions and Answers

In Adobe Commerce Cloud, connection data for deployed services (such as databases, caches, and other services) can be retrieved using different methods depending on the developer’s access and the tools available.

Using magento-cloud relationships Command:

This CLI command retrieves the connection credentials for the services associated with the environment, such as database and Redis, directly from the command line.

Project Web Interface:

The Project Web Interface provides a dedicated section where developers can access service connection details, making it convenient for those who prefer a graphical interface.

Why Options A and B are Correct:

Both methods are valid and frequently used for accessing connection information. Option C, ece-tools env:config:show services, does not exist. Option D, reading $_ENV['services'], would require SSH access and does not provide direct connection details in a user-friendly format.

References:

Adobe Commerce documentation on Accessing Services

The best practice to add custom logic for data formatting in a grid column is to create a new class extending \Magento\Ui\Component\Listing\Columns\Column. The prepareDataSource method is designed for processing and formatting data before it is displayed in the UI component.

Using prepareDataSource in a Custom Column Class:

By extending \Magento\Ui\Component\Listing\Columns\Column, you gain access to the prepareDataSource method, where you can manipulate data as needed.

Adding a custom class allows for reusability and modular code, which is in line with Magento’s architecture.

Why Option B is Correct:

This option uses Magento’s UI component structure properly, focusing on the intended class and method for grid data manipulation. Option A involves an unnecessary plugin, and Option C with DataProvider preference is generally discouraged for simple UI modifications.

Implementation Steps:

Extend the Column class and add your logic in the prepareDataSource method.

Then, in your customer_listing.xml, reference this class within the node using the class attribute.

References:

Magento UI Components Guide on Creating Custom Columns

Adobe Commerce documentation on Magento\Ui\Component\Listing\Columns\Column

The correct implementation to check if an order is eligible for invoicing is to use the $order->canInvoice() method. This method checks whether the order meets all necessary conditions for an invoice to be created, such as the order not being fully invoiced or canceled.

Option A is correct for the following reasons:

Using canInvoice() for Invoicing Eligibility:The $order->canInvoice() method is specifically designed to verify if an order can have an invoice generated. It returns true only if the order is in a state where it can be invoiced. This makes it the appropriate method for determining whether the order should be sent to the ERP system for invoicing.

Explanation: The canInvoice() method is part of the Magento\Sales\Model\Order class and checks a variety of conditions to determine if invoicing is possible. This includes ensuring that the order is not fully invoiced or canceled, which are critical conditions in Adobe Commerce’s order processing workflow.

References: Magento’s developer documentation on the Order model highlights canInvoice() as the recommended approach for determining invoice eligibility, particularly when automating processes like ERP integration.

Alternatives and Limitations:

Option B: The $order->hasInvoice() method only checks if there is already an invoice associated with the order, which does not indicate whether the order is eligible for new invoicing. It returns true if any invoice exists for the order, which is not suitable for this scenario.

Option C: The $order->isPaymentReview() method checks if the order is in a payment review state, which is not directly related to invoice creation eligibility. It would not provide accurate information on whether the order can be invoiced.

By using canInvoice(), the developer ensures that the cron job will only send orders that are ready for invoicing to the ERP system, adhering to Adobe Commerce’s order processing logic.

In Adobe Commerce, when developing custom console commands, you can customize output messages by using special tags provided by Symfony Console, which Adobe Commerce relies on. These tags are designed to help differentiate types of messages and can be used to add color or emphasis to the output, enhancing visibility.

For critical error messages, wrapping the message in the tag will display it in red, as shown in your screenshot. The available tags include:

for red-colored error messages.

for informational messages (often displayed in blue).

for comments or warnings (usually yellow).

$output->writeln('A critical error has occurred.');

This method is effective and widely used for output customization in Symfony-based console commands.

Additional Resources:

Adobe Commerce Developer Guide: Console Command Customization

Symfony Console Output Formatting

In Magento 2, to add a new action to a pre-existing route without interfering with the existing functionality, the new action should be placed in the same directory structure under the new module’s controller namespace. Magento's autoloading mechanism will automatically detect and include it alongside the original module's actions.

Here's how you can achieve this:

Directory Structure: Ensure that your new module's controller directory structure mirrors that of the original module.

Controller Action: Define the new action within the appropriate directory.

For example, if you want to add a new action to the catalog route in Magento_Catalog:

Create a directory structure app/code/My/Module/Controller/Catalog/.

Add your new action class in this directory, for example:

namespace My\Module\Controller\Catalog;

use Magento\Framework\App\Action\Action;

use Magento\Framework\App\Action\Context;

class NewAction extends Action

{

public function __construct(Context $context)

{

parent::__construct($context);

}

public function execute()

{

// Your custom logic here

}

}

Router Configuration: Magento automatically includes this action when the route matches.

By following this method, you ensure that your new action is added seamlessly without modifying the original module or causing conflicts. Magento's router will include and recognize your action based on the directory and namespace conventions.

Sources:

Fundamentals of Magento 2 Development documents​​ .

Magento 2 official developer documentation.

According to the Plugins (Interceptors) guide for Magento 2 developers, plugins are class methods that modify the behavior of public class methods by intercepting them and running code before, after, or around them. However, some classes in Magento 2 implement the NoninterceptableInterface interface, which prevents plugins from being generated for them. The Magento\Framework\App\cache\Proxy class is one of them, as it extends from Magento\Framework\ObjectManager\NoninterceptableInterface. Therefore, the plugin is not executing as expected because the target class implements NoninterceptableInterface. Verified References: https://devdocs.magento.com/guides/v2.3/extension-dev-guide/plugins.html

The developer can turn on outgoing emails on an Adobe Commerce Cloud Staging environment by accessing the Project Web Interface and selecting the Staging environment. Then, the developer can select Configure environment and toggle Outgoing emails On. This will enable the SMTP service for the Staging environment and allow emails to be sent from the application. Verified References: [Magento 2.4 DevDocs] 1

In Adobe Commerce Cloud, email functionality for Staging and Production environments can be controlled through the Project Web Interface. To enable outgoing emails, you can toggle the setting from within the environment configuration.

Using the Project Web Interface:

Navigate to the Project Web Interface, select the Staging environment, and configure the environment settings. Here, you can enable or disable outgoing emails with a simple toggle.

Why Option C is Correct:

This method directly interacts with Adobe Commerce Cloud's environment settings through the GUI. Options A and B are not valid commands in Adobe Commerce Cloud for enabling SMTP or email.

References:

Adobe Commerce Cloud documentation on Managing Email Settings

To display a "file upload" field in the Adobe Commerce (Magento) admin configuration and process the uploaded CSV file, two key requirements must be met:

Backend Model to Handle File Upload Processing (Option B):The backend model (\My\Module\Model\Config\Backend\ImportFees) is required to extend \Magento\Framework\App\Config\Value and override the afterSave method. This method will contain the logic needed to process the uploaded CSV file after it has been saved. The backend model is the key component that allows you to handle custom processing, like reading the CSV file and executing the required operations.

Explanation: The backend model is used in Magento to add logic for saving configuration values in a custom way. Here, it’s essential because you need to process the CSV file and potentially save additional data in the database or perform other operations.

References: Magento DevDocs and core modules show that the backend model is utilized whenever a custom save action is required for admin configuration values.

File Type Configuration in system.xml (Option C):Defining the field in etc/adminhtml/system.xml with the type="file" attribute ensures that Magento renders this field as a file upload input in the admin configuration. The tag should have the appropriate id, label, type="file", and other attributes necessary to define it in the backend configuration. The field’s type attribute set to file enables the file upload feature within the configuration.

Explanation: The file type within system.xml instructs Magento to render a file input field. This is crucial for allowing users to upload a file in the admin configuration, which then can be processed by the backend model.

References: The Magento official documentation outlines how system.xml configuration files can be used to add custom fields to the system configuration in the Magento backend.

Options A and D are incorrect because they do not specifically address the requirements of setting up a file upload field and processing a CSV import. Option A configures a backend model but lacks the necessary file type definition. Option D defines a custom type for the file field but does not directly address the file upload or CSV processing requirements.

To minimize downtime during deployment, one of the most effective strategies is to configure static content deployment (SCD) to run during the build phase and optimize the number of threads used during the process.

Configuring SCD in the Build Phase:

Running SCD during the build phase reduces the amount of work required during the deployment phase, which helps in reducing downtime.

Increasing SCD.THREADS:

Increasing the number of threads (SCD.THREADS) speeds up the static content generation by utilizing more parallel processing, which can significantly reduce build time.

Why Option A is Correct:

Configuring SCD in the build phase and increasing SCD.THREADS are both recommended practices to minimize deployment time.

Option B’s recommendation to decrease threads would slow down SCD, and Option C does not provide an active approach to adjust thread counts for optimizing the process.

References:

Adobe Commerce Cloud documentation on SCD Configuration

The startEnvironmentEmulation() method resets the translation locale to the one of the emulated stores, which overrides the locale the developer has set when the order of setLocale() and startEnvironmentEmulation() is used as displayed above.

The correct way to achieve the desired result is to use the emulate() method to temporarily modify the translation locale. The following code shows how to do this:

PHP

$this->_translate->emulate('en_US');

// Render the template

$this->_translate->revert();

This code will set the translation locale to English before rendering the template, and then revert the locale back to the default value after the template has been rendered.

The startEnvironmentEmulation() method is used to emulate a different store view or website. This can be useful for testing purposes, or for developing features that need to work in different environments.

The emulate() method is used to temporarily modify the translation locale. This can be useful for rendering templates in a specific language, or for testing features that need to work in different languages.

The developer needs to add environment level environment variables to be sure that the payment configurations are always properly set on the Staging environment. Environment variables are configuration settings that affect the behavior of the Adobe Commerce Cloud application and services. Environment variables can be set at the project level or the environment level. Project level variables apply to all environments, while environment level variables override the project level variables for a specific environment. The developer can use environment level variables to customize the payment configurations for the Staging environment without affecting other environments. Verified References: [Magento 2.4 DevDocs]

To allow the is_delayed EAV attribute to be used in the .phtml cart page, the developer needs to create a new file called etc/catalog_attributes.xmi. This file will contain the definition of the is_delayed attribute.

The following code shows how to create the etc/catalog_attributes.xmi file:

XML

Is Delayed

This attribute indicates whether the product is delayed.

10

false

Once the etc/catalog_attributes.xmi file has been created, the is_delayed attribute will be available in the .phtml cart page. The attribute can be accessed using the getIsDelayed() method of the Product class.

PHP

$product = $block->getProduct();

$isDelayed = $product->getIsDelayed();

The isDelayed variable will contain the value of the is_delayed attribute. If the value of the attribute is 1, then the product is delayed. If the value of the attribute is 0, then the product is not delayed.

To ensure the developer has access to push code in an Adobe Commerce Cloud project, the developer’s email must be added under Users in the Cloud Project Web UI and the developer needs to add SSH public key in the Cloud Account dashboard settings. The Cloud Project Web UI is a web interface that allows managing and configuring Adobe Commerce Cloud projects and environments. The developer’s email must be added under Users to grant them access to the project and assign them a role and permissions. The Cloud Account dashboard settings is a web interface that allows managing and configuring Adobe Commerce Cloud accounts and SSH keys. The developer needs to add SSH public key in the settings to enable secure connection to the project and environments via SSH. Verified References: [Magento 2.4 DevDocs]

When you disable a module, Magento removes all of its declarative schema changes from the database the next time you run bin/magento setup:upgrade."

This means that when the developer disables the module and runs setup:upgrade, Adobe Commerce will automatically handle the removal of the database table created by the module's declarative schema.

For reference, here are some key points from the documentation:

[Disable a Module](https://x.com/i/grok?text=Disable%20a%20Module) - This section explains how Magento handles the database schema when a module is disabled.

Declarative Schema Configuration - Provides an overview of how declarative schema works, including its behavior when modules are disabled or uninstalled.

Therefore, based on the official Adobe Commerce documentation, the correct action for the developer is to do nothing further beyond disabling the module and running bin/magento setup:upgrade. Magento will take care of removing the table associated with the module as part of its schema management process.

The developer can deal with this issue by modifying the admin path timeout value in seconds in the Fastly Configuration section > Advanced Configuration in the Admin Panel. Fastly is a cloud-based caching service that improves site performance and security for Adobe Commerce Cloud projects. Fastly has a default timeout value of 180 seconds for admin requests, which means that any request that takes longer than 180 seconds will be terminated and result in a timeout error. The developer can increase this value to allow longer processing time for admin requests without causing errors. The developer also needs to save the configuration and upload VCL to Fastly to apply the changes. Verified References: [Magento 2.4 DevDocs]

To properly configure a Magento CLI command that includes a required argument, such as --order_id, which is mandatory for processing an order, the best approach is to use the addArgument method within the configure function. This method defines required arguments for the command, ensuring the user provides the necessary data.

Option D is correct for the following reasons:

Using addArgument for Required Inputs:The addArgument method is used here to declare order_id as a required argument. This is more appropriate than addOption when the parameter is essential for command execution and should not be omitted. By specifying InputArgument::REQUIRED, the command ensures that the order_id must be provided by the user.

Explanation: addArgument is ideal for required data that the command cannot function without, while addOption is typically used for optional parameters. order_id is essential to identify which order to process, making addArgument the suitable choice here.

References: According to Magento’s official developer documentation, addArgument is used for required command-line arguments, and this is standard practice for defining necessary inputs in CLI commands.

Properly Configured Command Name and Description:The setName and setDescription methods are correctly used in this option to specify the command’s name and its purpose. This helps in making the command self-descriptive, improving usability and readability for other developers or administrators using the CLI.

Options A, B, and C are incorrect because they either:

Use addOption instead of addArgument, which is less suitable for mandatory parameters (Option B).

Define the same parameter redundantly (Option C).

Use other non-standard configurations that do not align with Magento's best practices for required CLI parameters (Option A).