README

This module provides a solution for displaying multiline text in Magento 2 admin grids. It preserves line breaks in text area custom attributes when displayed in the admin product grid.

Before and After

Before

After

Installation

To install the module via Composer:

composer require liquidlab-agency/magento2-multiline-grid

After installation:

1. The module is already installed in your Magento 2 instance.
2. After making any changes to the module, you need to deploy the static content and clear the cache:

   bin/magento setup:upgrade
   bin/magento setup:di:compile
   bin/magento setup:static-content:deploy -f
   bin/magento cache:clean
   bin/magento cache:flush
   

Usage

The module automatically applies to all columns in the admin grid. No additional configuration is needed in your UI component XML.

How It Works

The module uses a mixin approach to:

1. Extend the default Magento UI column functionality
2. Convert newlines (\n) to HTML <br> tags
3. Use Knockout's html binding instead of text binding to preserve HTML formatting

This ensures that line breaks in text area fields are properly displayed in the admin grid without requiring any changes to your UI component XML files.

Technical Details

The module follows Magento's best practices for mixins:

1. The requirejs-config.js file is placed in the view/adminhtml directory
2. It defines a mixin for the Magento_Ui/js/grid/columns/column component
3. The mixin overrides the getLabel method to convert newlines to <br> tags 4The mixin sets the bodyTmpl to use a custom template with the html binding using the mapped path: bodyTmpl: 'Liquidlab_MultilineGrid/grid/cells/multiline'

This approach automatically applies to all columns in the admin grid, making it a more elegant solution than creating a custom column type.

After making changes to the module, always run the deployment commands listed in the Installation section to ensure the changes take effect. This is especially important when modifying RequireJS configurations and template paths.