Module: Karst::Access::SelectedPrincipalSources

Defined in:
lib/karst/access/selected_principal_sources.rb

Overview

Turns a locally selected set of ambiguous Devise models (see Karst::Access::PrincipalSourceSelection) into ordinary Karst::Access::PrincipalSource objects, one per selected model, each keyed by that model's own Devise/Warden scope -- so selecting both User and Admin produces two independently queryable sources (:user => ..., :admin => ...) exactly like a hand-written config.principal_sources would, never collapsed into one combined source.

Every selected name is revalidated against Karst::Identity::DeviseSupport's current Devise.mappings on every call: a name the file stores but Devise no longer maps (removed, renamed) is silently dropped here, never constantized, and never trusted on the strength of the file alone. If that drops every selection, Karst is ambiguous again -- the developer is asked to select once more, exactly like the first time.

Class Method Summary collapse

Class Method Details

.mappings ⇒ Object

The subset of Karst::Identity::DeviseSupport.mappings a developer has locally selected and that Devise still confirms right now -- used both to build #sources above and by Karst::Identity's own ambiguous/ready checks, so neither has to know the storage format. Always [] outside development/test (see Karst::Access::ApprovedPopulations.local_environment?, the same local-preference gate approved populations already use) and on any failure -- selection is an optional convenience layered over Devise's own metadata, never something whose breakage should take down the panel, CLI, or MCP tool.



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# File 'lib/karst/access/selected_principal_sources.rb', line 51

def mappings
  return [] unless ApprovedPopulations.local_environment?

  record = PrincipalSourceSelection.load
  return [] if record.model_names.empty?

  current = Identity::DeviseSupport.mappings
  record.model_names.filter_map { |name| current.find { |mapping| mapping.model.name == name } }
rescue StandardError
  []
end

.sources ⇒ Object

A Hash of Symbol(Devise scope) => PrincipalSource for every currently valid selected mapping, or nil when local selection does not apply at all (production, nothing selected, or every selected mapping is now stale).



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# File 'lib/karst/access/selected_principal_sources.rb', line 32

def sources
  valid = mappings
  return nil if valid.empty?

  valid.to_h do |mapping|
    [mapping.scope, PrincipalSource.new(name: mapping.scope, records: -> { mapping.model.all })]
  end
end