9. Manage Contentful schema state via migrations

Date: 2022-09-09

Status

Accepted

Context

Our chosen CMS Contentful is powerful and can be configured via its UI quite easily. However, wanted to bring this under control using migrations so that changes are explicit, reviewable, repeatable and stored. This would be a key part of moving to a “CMS-as-Code” approach to using Contentful, where content-type changes and data migrations (outside of regular content entry) are managed via code.

Decision

We wanted to have as close as possible to the experience provided by the excellent Django Migrations framework, where we would:

• be able to script migrations, rather than resort to “clickops”

• be able to apply them individually or en masse

• be able to store the state of which migrations have/have not been applied in a central datastore (and ideally Contentful)

We experimented with hand-cutting our own framework, which was looking viable, but then we came across https://github.com/jungvonmatt/contentful-migrations which does all of the above. We’ve evaluated it and it seems fit for purpose, even if it has some gaps, so we’ve adopted it as our current way to manage and apply migrations to our Contentful setup.

Consequences

We’ve gained a tool that enables code-based changes to Contentful, which helps in two ways:

1. It enables and eases the initial work to migrate from Legacy Compose to new Compose (these are both ways of structuring pages in Contentful)

2. It lays tracks for moving to CMS-as-Code