Effect CommunityEC
Effect Community•10mo ago
André König

Efficient method for attribute conversion in schema transformations

What is the recommended method for converting certain attributes in my schema when saving it to a database?

Let's say I have the following schema defined:

const Something = Schema.Struct({
  id: SomethingId,
  createdAt: DateTimeUtc
});


Currently, I am using two separate transformations for reading and writing the entity (createdAt is an int with the millis in my database).

const ReadSomethingEntity = Schema.transform(
  Schema.Struct({
    id: SomethingId,
    createdAt: Schema.Int
  }),
  Something,
  // ...
);

const WriteSomethingEntity = Schema.transform(
  Schema.Struct({
    id: SomethingId,
    createdAt: Schema.Int
  }),
  Something,
  // ...
);


I'm wondering if there is a more efficient approach or shortcut that I might be overlooking.
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