Top 10 Drupal Interview Questions and Answers

Custom modules and themes can be created in Drupal using PHP and CSS/HTML respectively.

• To create a custom module, define a .info.yml file, a .module file, and a .routing.yml file.

• To create a custom theme, define a .info.yml file, a .theme file, and a...read more

Creating forms in Drupal with code explanation

• Use the Drupal Form API to create forms

• Define form elements using the Form API functions

• Implement form validation and submission handlers

• Use hook_form_alter to modify existing forms

Debugging in Drupal involves using tools like Devel module, watchdog(), and error logs.

• Enable Devel module for debugging information

• Use watchdog() function to log messages to Drupal's watchdog log

• Check error logs for PHP errors and warnings

• Use dpm() ...read more

To add Drupal patches, use the patch command in the terminal.

• Download the patch file and place it in the root directory of the Drupal installation.

• Open the terminal and navigate to the root directory of the Drupal installation.

• Run the command 'patch ...read more

Migrating from Drupal 7 to Drupal 8 involves a few steps.

• Upgrade to the latest version of Drupal 7

• Install the Drupal 8 core and migrate modules

• Migrate content and configuration using the Migrate API

• Test and fix any issues that arise

Drupal Cache Mechanism stores and retrieves data to improve website performance.

• Drupal has multiple cache bins like page cache, block cache, and dynamic page cache.

• Cache tags are used to invalidate specific cache items when content is updated.

• Cache c...read more

Drupal 7 and 9 have significant differences in terms of technology, features, and performance.

• Drupal 9 has removed deprecated code from Drupal 7 and introduced new features like the Layout Builder and Claro admin theme.

• Drupal 9 requires PHP 7.3 or hi...read more

Drupal best practices involve following coding standards, using modules wisely, optimizing performance, and maintaining security.

• Follow Drupal coding standards to ensure consistency and readability of code

• Use contributed modules from trusted sources ...read more

To create a custom form in Drupal, you can use the Form API to define the form structure and functionality.

• Use hook_form_alter() to modify existing forms or hook_form_FORM_ID_alter() to alter a specific form.

• Define the form elements using the Form AP...read more

Drupal views allow for filtering and aggregating content based on context filters.

• Context filters allow you to filter content based on contextual information, such as the current user or page being viewed.

• Aggregation allows you to group and summarize...read more

Creating a custom theme in Drupal involves creating a new folder in the themes directory and adding necessary files.

• Create a new folder in the themes directory with a unique name

• Add a .info.yml file to define the theme

• Create a .theme file for theme-s...read more