Easy Steps to Create a Patch in Drupal

Easy Steps to Create a Patch in Drupal

Looking to understand how to use patch in Drupal

 

In this blog, we are going to uncover two main questions:

 

  • What is a patch?
  • How to create a patch in Drupal?

 

So, let’s get started.
 

What is a patch?

Patch is a file that consists of a list of differences and is usually created with the help of the git diff command. In the Drupal community, developers make use of this patch file as a contribution to fix an issue or enhance a feature in a module, theme, or even for Drupal core.

 

How to create a patch in Drupal?

Here we will show you the ways of creating a Patch file:


There are 2 different ways of creating a patch file 

  • Path Independent
  • Path Dependent

 

Path Independent Patch
 

Follow these steps to create a Path Independent Patch:

 

  1. Create and set up a repository on GitHub specifically for creating patch files. It is best to maintain a single git repository for the patch files that you will be applying to your drupal project.

 

  1. Move the module/theme or core files that you need to generate patches to the newly created git repository.

 

  1. Make the necessary changes to a file on your local

    Easy Steps to Create a Patch in Drupal

 

  1. Verify that the “git status” command shows the file that you have modified.

 

Easy Steps to Create a Patch in Drupal

 

  1. To generate the patch, use the following command:
    git diff --no-prefix [file-name] > ./file-name.patch
     
  2. The above command will generate a path-independent patch with the mentioned patch filename.
    Example:
    git diff --no-prefix path_independent_module.info.yml > ./updated-module-description.patch

    will generate the below file:

    Easy Steps to Create a Patch in Drupal

 

  1. You can then use the independent patch file and apply it to the appropriate module(s).



 

Path Dependent Patch
 

Follow these steps to create a Path Independent Patch:
 

  1. Create and set up a repository on GitHub specifically for creating patch files. It is best to maintain a single git repository for the patch files that you will be applying to your drupal project.

 

  1. Move the module/theme or core files that you need to generate patches to the newly created git repository.

 

  1. Make the necessary changes to a file on your local.


Easy Steps to Create a Patch in Drupal
 

  1. Verify that the “git status” command shows the file that you have modified.
     

Easy Steps to Create a Patch in Drupal

 

  1. To generate the patch use the following command:
    git diff [file-name] > ./file-name.patch

 

  1. The above command will generate a path-independent patch with the mentioned patch filename.

Example:
git diff path_dependent_module.info.yml > ./updated-dependent-module-description.patch

will generate the below file:
Easy Steps to Create a Patch in Drupal

 

  1. You can then use the dependent patch file and apply it to the appropriate module(s) and make sure that the file path mentioned in the git differences is the same as in your project.


 

Note: Path Independent patch can be used as a best practice to create a patch since the git difference does not show the exact file location and it is not required that the original file should have the same location as the path given by git diff.  


So there you have it. Be sure to follow these above mentioned steps when creating a Drupal module and are looking to apply a patch successfully.

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Vinay Mahale
Jr Software Engineer
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