After mutate, how to get the new record or uid?

pandalive · June 16, 2020, 2:37pm

I used dgraph client for rust: dgraph-tonic .

I want to get the new record after mutate, but I quickly encountered a problem and raised the problem to dgraph-tonic: After mutate, how to get the new record or uid ? .

There is no answer yet.

This problem prevented me from continuing to work.

I am not sure if this is a problem with dgraph-tonic or dgraph itself.

Hope to find the answer here.

MichelDiz · June 16, 2020, 5:21pm

Not Dgraph, it is a client issue

e.g

github.com

dgraph-io/dgraph-js-http/blob/8f485a6c195edf8b72f9dda4d1011718e90018fe/examples/simple/index-async-await.js#L75


      
                  // Commit transaction.
                  await txn.commit();
          
                  // Get uid of the outermost object (person named "Alice").
                  // Assigned#getUidsMap() returns a map from blank node names to uids.
                  // For a json mutation, blank node names "blank-0", "blank-1", ... are used
                  // for all the created nodes.
                  console.log(`Created person named "Alice" with uid = ${assigned.data.uids["blank-0"]}\n`);
          
                  console.log("All created nodes (map from blank node names to uids):");
                  Object.keys(assigned.data.uids).forEach((key) => console.log(`${key} => ${assigned.data.uids[key]}`));
                  console.log();
              } finally {
                  // Clean up. Calling this after txn.commit() is a no-op
                  // and hence safe.
                  await txn.discard();
              }
          }
          
          // Query for data.
          async function queryData(dgraphClient) {

Via assigned.data.uids you can get the mutate uids. This should exists in that Rust client.

selmeci · June 16, 2020, 6:43pm

Hi,

We are going to add example to Readme.md asap.

pandalive · June 17, 2020, 2:11am

@MichelDiz Thanks. @selmeci answered my question.

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After mutate, how to get the new record or uid?

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