Specify a new template file

Oct 13, 2025 by talynt.org 121 views

Introduction

Magento 2 is a powerful e-commerce platform that offers a high degree of flexibility and customization. One of the key features of Magento 2 is its modular architecture, which allows developers to create custom modules to extend and modify the platform's behavior. In this article, we will explore how to override a .phtml file in a custom module, which is a fundamental concept in Magento 2 development.

Understanding Magento 2's Directory Structure

Before we dive into overriding .phtml files, it's essential to understand Magento 2's directory structure. The platform's codebase is organized into several directories, each with its own purpose. The most relevant directories for our purposes are:

app/code: This directory contains the platform's core code, as well as custom modules developed by developers.
app/design: This directory contains the platform's frontend and backend design files, including .phtml files.
app/design/frontend: This directory contains the frontend design files, including .phtml files.
app/design/adminhtml: This directory contains the backend design files, including .phtml files.

Creating a Custom Module

To override a .phtml file, we need to create a custom module. A custom module is a directory that contains a set of files, including a registration.php file, a module.xml file, and a etc directory. Here's a step-by-step guide to creating a custom module:

Create a new directory: Create a new directory in the app/code directory, for example, Vendor/Module.
Create a registration.php file: Create a registration.php file in the Vendor/Module directory. This file contains a single function that registers the module with Magento 2.
Create a module.xml file: Create a module.xml file in the Vendor/Module directory. This file contains metadata about the module, including its name, description, and dependencies.
Create an etc directory: Create an etc directory in the Vendor/Module directory. This directory contains configuration files for the module.

Overriding a .phtml File

Now that we have created a custom module, we can override a .phtml file. To do this, we need to create a new .phtml file in our custom module's directory. Here's a step-by-step guide to overriding a .phtml file:

Create a new .phtml file: Create a new .phtml file in the Vendor/Module/view/frontend/templates directory. For example, Vendor/Module/view/frontend/templates/mytemplate.phtml.
Copy the original .phtml file: Copy the original .phtml file from the app/design/frontend/ Vendor/Theme/templates directory to our custom module's directory.
Modify the .phtml file: Modify the .phtml file to suit our needs. We can add new code, remove existing code, or modify the layout of the file.

Using a Layout File to Override a .phtml File

Another way to override a .phtml file is by using a layout file. A layout file is an XML file that defines the layout of a page. We can use a layout file to override a .phtml file by specifying a new template file in the layout file.

Here's an example of how to use a layout file to override a .phtml file:

Create a new layout file: Create a new layout file in the Vendor/Module/view/frontend/layout directory. For example, Vendor/Module/view/frontend/layout/mylayout.xml.
Specify a new template file: In the layout file, specify a new template file using the <template> element. For example: <template file="Vendor_Module::mytemplate.phtml">.

Conclusion

In this article, we have explored how to override a .phtml file in a custom module. We have covered the basics of Magento 2's directory structure, creating a custom module, and overriding a .phtml file using a custom module. We have also discussed using a layout file to override a .phtml file. By following these steps, developers can create custom modules that override .phtml files and extend the behavior of Magento 2.

Best Practices

When overriding a .phtml file, it's essential to follow best practices to ensure that our custom module does not conflict with the platform's core code. Here are some best practices to keep in mind:

Use a unique namespace: Use a unique namespace for our custom module to avoid conflicts with the platform's core code.
Use a unique directory structure: Use a unique directory structure for our custom module to avoid conflicts with the platform's core code.
Test our custom module: Test our custom module thoroughly to ensure that it does not conflict with the platform's core code.

Common Issues

When overriding a .phtml file, we may encounter common issues such as:

Template not found: The template file specified in the layout file is not found.
Template not loaded: The template file specified in the layout file is not loaded.
Conflict with core code: Our custom module conflicts with the platform's core code.

To resolve these issues, we can use the following troubleshooting steps:

Check the namespace: Check that our custom module's namespace is unique and does not conflict with the platform's core code.
Check the directory structure: Check that our custom module's directory structure is unique and does not conflict with the platform's core code.
Check the layout file: Check that the layout file is correct and specifies the correct template file.

Introduction

In our previous article, we explored how to override a .phtml file in a custom module. However, we understand that there may be many questions and concerns that developers have when it comes to overriding .phtml files in Magento 2. In this article, we will address some of the most frequently asked questions and provide answers to help developers overcome common challenges.

Q: What is the best way to override a .phtml file in Magento 2?

A: The best way to override a .phtml file in Magento 2 is by creating a custom module and placing the overridden .phtml file in the Vendor/Module/view/frontend/templates directory. This approach allows you to maintain a clean and organized codebase while still achieving the desired outcome.

Q: How do I know which .phtml file to override?

A: To determine which .phtml file to override, you need to identify the specific template file that is responsible for rendering the content you want to modify. You can do this by inspecting the HTML output of the page and looking for the template file that is being used. Alternatively, you can use the Magento 2 developer tools to inspect the template files and identify the one that needs to be overridden.

Q: Can I override a .phtml file in the `app/design/frontend/ Vendor/Theme/templates` directory?

A: Yes, you can override a .phtml file in the app/design/frontend/ Vendor/Theme/templates directory. However, this approach is not recommended as it can lead to conflicts with the platform's core code. Instead, it's better to create a custom module and place the overridden .phtml file in the Vendor/Module/view/frontend/templates directory.

Q: How do I use a layout file to override a .phtml file?

A: To use a layout file to override a .phtml file, you need to create a new layout file in the Vendor/Module/view/frontend/layout directory and specify the new template file using the <template> element. For example: <template file="Vendor_Module::mytemplate.phtml">.

Q: Can I use a layout file to override a .phtml file in the `app/design/frontend/ Vendor/Theme/layout` directory?

A: Yes, you can use a layout file to override a .phtml file in the app/design/frontend/ Vendor/Theme/layout directory. However, this approach is not recommended as it can lead to conflicts with the platform's core code. Instead, it's better to create a custom module and place the layout file in the Vendor/Module/view/frontend/layout directory.

Q: How do I troubleshoot issues with overriding a .phtml file?

A: To troubleshoot issues with overriding a .phtml file, you can use the following steps:

Check the namespace: Ensure that your custom module's namespace is unique and does not conflict with the platform's core code.
Check the directory structure: Ensure that your custom module's directory structure is unique and does not conflict with the platform's core code.
Check the layout file: Ensure that the layout file is correct and specifies the correct template file.
Check the template file: Ensure that the template file is correct and is being loaded correctly.

Q: Can I override a .phtml file in a Magento 2 theme?

A: Yes, you can override a .phtml file in a Magento 2 theme. However, this approach is not recommended as it can lead to conflicts with the platform's core code. Instead, it's better to create a custom module and place the overridden .phtml file in the Vendor/Module/view/frontend/templates directory.

Q: How do I know which theme to use when overriding a .phtml file?

A: To determine which theme to use when overriding a .phtml file, you need to identify the specific theme that is being used by the page you want to modify. You can do this by inspecting the HTML output of the page and looking for the theme that is being used. Alternatively, you can use the Magento 2 developer tools to inspect the theme and identify the one that needs to be used.

Conclusion

In this article, we have addressed some of the most frequently asked questions and provided answers to help developers overcome common challenges when overriding .phtml files in Magento 2. By following these guidelines and best practices, developers can create custom modules that override .phtml files and extend the behavior of Magento 2 without conflicts.