feat: add generate_rest? option to seed_generator#2591
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zachdaniel merged 3 commits intoApr 16, 2026
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When `generate_rest?: false` is passed to `seed_generator/2`, only attributes explicitly provided in the attributes map (and overrides) receive generated values. Unlisted attributes use their resource-level default or nil. Raises clearly if a required attribute is missing. Defaults to `true` to preserve existing behavior.
zachdaniel
reviewed
Feb 26, 2026
zachdaniel
reviewed
Feb 26, 2026
zachdaniel
reviewed
Feb 26, 2026
Addresses review feedback on ash-project#2591: use Keyword.get(opts, :generate_rest?, true) instead of opts[:generate_rest?] == false, and place the default (generate-rest) path in the true branch of the conditional.
…lidation Addresses review feedback on ash-project#2591: generate_rest?: false validation now consults the resource's primary create action (when present). Attributes in allow_nil_input are no longer treated as required, and attributes in require_attributes are treated as required even when a default exists. Also drops two flaky `name != nil` assertions on Author — name allows nil and has a default, so nil is a valid random output that occasionally surfaces once test ordering changes.
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Problem
seed_generatorin its tuple form{Resource, %{attrs}}generates random values for all writable, non-generated attributes, even those not listed in the attributes map. This makes it easy to accidentally introduce nondeterminism into test generators — any attribute not explicitly pinned will receive a random value, which can cause flaky tests that are difficult to trace back to the generator.Solution
Adds a
generate_rest?option toseed_generator/2. Whenfalse, only attributes explicitly listed in the attributes map (and overrides) receive generated values. Unlisted attributes receive their resource-level default ornil(ifallow_nil?). Raises with a clear message if a required attribute (allow_nil?: false, no default) is not provided, catching missing generators early.Defaults to
trueto preserve existing behavior.