39 lines
1.7 KiB
Ruby
39 lines
1.7 KiB
Ruby
class ChampPolicy < ApplicationPolicy
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class Scope < ApplicationScope
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def resolve
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if user.blank?
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return scope.none
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end
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# The join must be the same for all elements of the WHERE clause.
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#
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# NB: here we want to do `.left_outer_joins(dossier: [:invites, { :groupe_instructeur: :instructeurs }]))`,
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# but for some reasons ActiveRecord <= 5.2 generates bogus SQL. Hence the manual version of it below.
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joined_scope = scope
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.joins('LEFT OUTER JOIN dossiers ON dossiers.id = champs.dossier_id')
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.joins('LEFT OUTER JOIN invites ON invites.dossier_id = dossiers.id')
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.joins('LEFT OUTER JOIN groupe_instructeurs ON groupe_instructeurs.id = dossiers.groupe_instructeur_id')
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.joins('LEFT OUTER JOIN assign_tos ON assign_tos.groupe_instructeur_id = groupe_instructeurs.id')
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.joins('LEFT OUTER JOIN instructeurs ON instructeurs.id = assign_tos.instructeur_id')
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# Users can access public champs on their own dossiers.
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resolved_scope = joined_scope
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.where('dossiers.user_id': user.id, private: false)
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# Invited users can access public champs on dossiers they are invited to
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invite_clause = joined_scope
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.where('invites.user_id': user.id, private: false)
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resolved_scope = resolved_scope.or(invite_clause)
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if instructeur.present?
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# Additionnaly, instructeurs can access private champs
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# on dossiers they are allowed to instruct.
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instructeur_clause = joined_scope
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.where('instructeurs.id': instructeur.id, private: true)
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resolved_scope = resolved_scope.or(instructeur_clause)
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end
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resolved_scope
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end
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end
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end
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