Drupal 8.x

Sometimes we need to create a pager for custom data sets, such as retrieving specific types of nodes and applying a filter on top of it to get the expected data set.

In this post, I am going to create a custom Drupal module named pager_example, which will create a pager for a custom data set.

Register a path where we will display a page with a pager using a custom data set. For that, I am going to create a routing file with the name "pager_example.routing.yml", which will have the following snippet:

Let's assume there is a requirement where we need to filter node content for a given year. We can achieve this by creating a views exposed filter that will filter node content for the selected year.

In this post, I am using the module named "custom_views_filter" for demonstration purposes.

We will create a custom_views_filter.module file and add the below code.

Sometimes we do not want users to uninstall a Drupal module directly, but instead want to perform some checks first.

Let's take a scenario where installing a custom module creates node types along with some fields. Later on If a user wishes to uninstall that module (assuming some content has already been created on the site using the node types that are created by this module), then uninstalling that module can cause a serious problem. It should ask the user to delete the content first that has been created on the site using these node types before uninstalling the module.

In this post we are going to learn how to create module and drush commands using Drush, along with a demonstration of the validate and post hook commands.

First, we will create a module using the drush command. Let's run the following drush command and follow the instructions shown in the below picture.

PHPUnit is a unit testing framework for the PHP programming language. It is an instance of the xUnit architecture for unit testing frameworks that originated with SUnit and became popular with JUnit. PHPUnit was created by Sebastian Bergmann and its development is hosted on GitHub.

In this example, we are going to setup PHP Unit for Drupal 8/9 projects, so let's create a vanilla Drupal project with the recommended template.

• Create a Drupal project with composer using the recommended template.

This would require you to install composer first, then follow the below command to create a Drupal 8 project with composer.

TempStore API: A key-value storage to keep temporary data (private or shared) across page requests.

The below command can be used to install a Drupal site using the drush command.

Set the paragraph field configuration value programmatically based on configuration settings.

The following example will demonstrate how to update text field values with ajax. Use the following in your hook_form_alternate: