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discourse/db/fixtures/500_categories.rb
David Taylor b37f303c2a
DEV: Skip Uncategorized insert in add_uncategorized_category on fresh installs (#39971)
Previously, `20131022045114_add_uncategorized_category.rb` always
created an Uncategorized category and wrote the matching
`uncategorized_category_id` site setting, duplicating work that
`db/fixtures/500_categories.rb` (via `SeedData::Categories`) already
does on every fresh install.

This change gates the insert/update block on whether any category-less
regular topics exist — the only case where the migration genuinely needs
to backfill before the CHECK constraint can be added. The `ALTER TABLE …
ADD CONSTRAINT has_category_id` still runs unconditionally so the schema
is identical on both paths.

Two later migrations (`20140715190552_remove_uncategorized_parents.rb`
and `20150818190757_create_embeddable_hosts.rb`) read
`uncategorized_category_id` via `PG::Result#[](0)`, which raises
`IndexError` rather than returning `nil` when the row is missing —
previously dormant because the original migration always wrote the
setting. They are updated here to guard with `cmd_tuples`/`ntuples`
before indexing.

Extracted from https://github.com/discourse/discourse/pull/39788.
2026-05-13 12:13:05 +01:00

10 lines
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Ruby
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# frozen_string_literal: true
require "seed_data/categories"
if Rails.env.test?
# Tests need the Uncategorized category, but none of the others.
SeedData::Categories.with_default_locale.create(site_setting_names: ["uncategorized_category_id"])
else
SeedData::Categories.with_default_locale.create
end