def paths(id):
collection = obj_or_404(Collection.by_id(id))
authz.require(authz.collection_read(collection.id))
start_entity_id = request.args.get('entity_id')
labels = request.args.getlist('label')
types = request.args.getlist('type')
collection_id = request.args.getlist('collection_id')
end_collection_id = authz.collections_intersect(authz.READ, collection_id)
q = Path.find(collection, start_entity_id=start_entity_id, labels=labels,
types=types, end_collection_id=end_collection_id)
data = Pager(q, id=collection.id).to_dict()
data['facets'] = Path.facets(collection, start_entity_id=start_entity_id,
labels=labels, types=types,
end_collection_id=end_collection_id,
collection_id=authz.collections(authz.READ))
return jsonify(data)
