Freeletics Wordpress-to-Contentful Exporter

DISCLAIMER: this repository open-sources the code used at Freeletics for the migration of its content platform from Freeletics Wordpress sites to Contentful. The code is not generic, nor can be reused out of the box without prior modifications. Yet it provides a strong foundation for any body who wishes to perform a similar migration.

Context

The Freeletics content platform was initially managed by Wordpress through a multi network of sites. This content platform was composed of blogs, knowledge centers and support centers. While the support centers were migrated to Zendesk Guide the blogs and knowledge centers were migrated to Contentful.

Historically, the content of the blogs and the content of the knowledge Centers were dissociated and structured in a network of 13 Wordpress sites, all using unnecessary plugins. The blogs and knowledge centers were available in multiple languages, each language being provided by one Wordpress site. Plugins included the Advanced Custom Fields and MultilingualPress.

In an effort to scale and restructure our content platform, but also remove the unnecessary complexity, the content was migrated to Contentful while the content of blogs and knowledge centers were unified by merging the knowledge centers into the blogs of the same language.

General Approach

Migrating data from Wordpress to Contentful required several steps:

1. Export content from Wordpress. The first step is to export the content exposed by the Wordpress REST API into a JSON dump that could be transformed. This step requires extending the Wordpress REST API, through custom plugins, in order to expose data provided by third party plugins such as Yoast SEO, Advanced Custom Fields, MultilingualPress.
2. Transform exported content into Contentful digestible format. This second step is to transform the content exported into a format digestible by contentful-import. Amongst the transformations performed we can list: remap-id (which transforms Wordpress post/category id to Contentful id), convert-markup (which converts the Wordpress content to Markdown), prepare-assets (which extracts assets urls used in the content), remap-category (which remap knowledge categories to blog categories), remap-urls (which remap Wordpress URLs to Contentful URLs) etc.
3. Import transformed content to Contentful. The last step uses the contentful-import tool to import the transformed content to Contentful.

The migration is orchestrated with a command line interface provided by the wordpress-exporter-cli and the extensions of the Wordpress API are supported by the the following plugins. Please refer to the README files of those directories to access to more details.

Repository Structure

This mono-repository is organized as follow:

• plugins contains the Wordpress plugins developed at Freeletics to expend the Wordpress API.
• packages contains the command line interface wordpress-exporter-cli, and a sandbox packages used for early tests.

Getting Started

This mono-repository uses yarn and lerna, to get started simply run:

$ yarn install
$ lerna bootstrap

Note: do not run yarn install anywhere else than in the root of the repository.

Migrating Data From Wordpress To Contentful

Read here.