[openstreetmap-website] Changeset discussion feature (#772)

[Tom Hughes]

> @@ -0,0 +1,11 @@
> +require 'migrate'
> +class AddJoinTableBetweenUsersAndChangesets < ActiveRecord::Migration
> +  def change
> +    create_table :changesets_subscribers, id: false do |t|
> +      t.column :subscriber_id, :bigint, null: false
> +      t.column :changeset_id, :bigint, null: false
> +    end

My logic was that when we fetch subscribers for a changeset we won't care about the order, but when we fetch changesets for a subscriber we might - if for example we provided a paged list of changesets you were subscribed to.

---
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/pull/772/files#r15549116
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