thoughtbot/data_customs

Allow base class for migrations to be configurable

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#1 opened on Sep 5, 2025

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good first issue

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Description

Currently, all data migrations inherit from DataCustoms::Migration. It can be useful to configure that base class to something like ApplicationDataMigration to add shared behavior. A rough sketch of what it could look like:

class ApplicationDataMigration
  include Rspec::Matchers
end

DataCustoms.configure do |config|
  config.base_class = "ApplicationDataMigration"
end

Contributor guide

Research direction
Add a configurable base class for migrations by introducing a `base class` configuration option in the gem's configure block, defaulting to `DataCustoms::Migration`.
Tech stack
ruby
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
RubyGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80