automatically set dcterms:created and dcterms:modified when mutations are made

[alastair]

In some of our types (e.g. Annotation) we want to know when the annotation was made, and if it was changed, when it was changed.
To store this, we have 2 fields, created and modified.
There are 2 ways we can fill these fields. One is to require the client to set them (we can make created required in this case). A problem here is that modified would have to be non-required (and only set when an item is Updated?). Also, it means that a client could change created by sending an Updated mutation.
The other option is to make the CE automatically set the created field on a Create mutation, and set modified on an Update mutation. We would have to decide which types we want this behaviour on. Can we think of a situation when we might want to override this behaviour when creating an object?

[ChristiaanScheermeijer]

This feature would make this really easy:

neo4j-graphql/neo4j-graphql-js#364

[ChristiaanScheermeijer]

My preference is to fill these fields automatically as almost any other API does.

[alastair]

That sounds like a nice solution. How much work do you think it is to push this PR along to get it merged into an upcoming release?