Information for Developers

Development environment

Setup instructions

• Install Docker.
• Run docker-compose up to start all needed containers. You can stop them with Ctrl+C.
  • Alternatively, you can run docker-compose up -d to start them in the detached mode and docker-compose stop to stop them.
• Run ./docker-provision.sh for the initial WordPress setup.

You should be able to access the WP admin panel now: http://wordpress.localhost/wp-admin

The default username/password is admin/admin.

Once signed in you'll need to go to your local Memberful site, and setup a WordPress integration (Memberful Admin -> Settings -> Integrate -> I'm using WordPress), then copy and paste the activation code into the WordPress admin panel (WP admin -> Settings -> Memberful). Submit the form and then WordPress should be connected to your local vm, ready for development!

Resetting the local environment

Run docker-compose down to remove the Docker containers and follow the previous section to start them again.

To clear the database (for a clean new installation) you should first remove the data volume: docker volume rm memberful-wp_db_data

If the volume is not named as above you can find it from the full list with: docker volume ls

Using the WP-CLI

The command-line interface from Wordpress can be useful in debugging plugin issues and reading/editing the database.

An easy way to work with the CLI from outside the container is to take the wp() bash function from the provision script:

wp() {
  docker run -it --rm \
    --volumes-from memberful-wp_wordpress_1 \
    --network container:memberful-wp_wordpress_1 \
    --env-file envfile \
    --user 33:33 \
    wordpress:cli wp $@
}

If your volume and container names match you can take the above function, copy/paste it into your command prompt, and then run wp commands as if Wordpress was installed directly (outside a container).

For example, to see all the metadata for user 2 directly from the db: wp user meta list 2

Versioning

The plugin is versioned using Semantic Versioning.

The gist of it is as follows:

                                                                        
                    +---+ Increment this number on every normal release 
                    |     that adds features and is not intended to     
                    v     break/remove existing features.               
                 1.12.0                                                 
                 ^    ^                                                 
                 |    |                                                 
      +----------+    +----------+ Change this number if you need to    
      +                            release an update that ONLY includes 
  Increment this number            bug fixes.                           
  if you change compatibility                                           
  or stop supprting an old                                              
  version of WordPress.                                                 
                                                                        

It's worth noting that the version number is not a decimal number, and each segment is a separate number. i.e. 1.12.0 > 1.11.0.

Releasing a new version of the plugin

• Make sure that every change has an appropriate changelog entry in readme.txt.
• Set correct version number in readme.txt and memberful-wp.php.
• Ensure that all changes are ready in the main branch.
• Run ./release.sh.
• A copy of the wordpress.org svn repo will be downloaded into /tmp, the version you tagged will be copied across to the tags and trunk directories, (sans development files) and then committed to the svn repo, causing wordpress.org to release a new version.
• The script will remove the svn directory.

Updating WordPress SVN without a new plugin version

From time to time we need to update WordPress SVN without releasing a new plugin version. For example we need to do this after updating "Tested up to" in readme.txt. To do this simply follow the release instructions above without updating the plugin version.

Rolling back

• Revert your changes.
• Release a new version with a version number greater than the current one, e.g. if the current version is 1.15.0 then release 1.16.0.