[{currentStage:"5b06999d889de3bd613ab79d",stagePermissions:[{"stage":"5b06999d889de3bd613ab79d","_id":"5b3ca6ed676af0e70150a7b9","permissions":["sdfsdfs","admin"]},{"stage":"587d33db87969c1b380fb903","_id":"5b3ca6ed676af0e70150a7b8","permissions":["admin"]},{"stage":"587d33db87969c1b380fb903","_id":"5b3ca6ed676af0e70150a7b8","permissions":["sdsdds"]},{"stage":"587d33db87969c1b380fb903","_id":"5b3ca6ed676af0e70150a7b8","permissions":["dddd"]}]}]

db.collection.aggregate([{"$project":{"stagePermissions":{"$filter":{"input":"$stagePermissions","as":"stagePermission","cond":{"$and":[{"$eq":["$$stagePermission.stage","$currentStage"]},{"$in":["admin","$$stagePermission.permissions"]}]}}},"currentStage":1}},{"$match":{"stagePermissions":{"$ne":[]}}}])