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Use extended policies in Differential diffs

Authored by epriestley on Jan 1 2017, 4:42 PM.



Fixes T9648. Diffs currently use return $this->getRevision()->getViewPolicy(); to inherit their revision's view policy.

After the introduction of object policies, this is wrong for policies like "Subscribers", because it means "Subscribers to this object, the diff". Since Diffs have no subscribers, this always fails.

Instead, use extended policies so that the object policy evaluates in the context of the correct object (the revision).

Test Plan
  • Create a revision.
  • Subscribe alice to it.
  • Set view policy to "Subscribers".
  • View revision as alice.
  • Before patch: nonsense fatal about missing diff because of policy error.
  • After patch: alice can see the revision.

Diff Detail

rP Phabricator
Automatic diff as part of commit; lint not applicable.
Automatic diff as part of commit; unit tests not applicable.